Neutrino Oscillations, Lorentz/CPT Violation, and Dark Energy (2009)
Ando, Shin'ichiro, Kamionkowski, Marc, Mocioiu, Irina
If dark energy (DE) couples to neutrinos, then there may be apparent violations of Lorentz/CPT invariance in neutrino oscillations. The DE-induced Lorentz/CPT violation takes a specific form that...
Galactic Substructure and Energetic Neutrinos from the Sun and Earth (2009)
Koushiappas, Savvas M., Kamionkowski, Marc
We consider the effects of Galactic substructure on energetic neutrinos from annihilation of weakly interacting massive particles that have been captured by the Sun and Earth. Substructure gives rise...
Discovering gravitational waves would not only validate Einstein’s theory of gravitation but also reveal aspects of the Universe’s earliest moments. The hunt for these elusive ripples is now well...
Galactic Substructure and Energetic Neutrinos from the Sun and the Earth (2009)
Koushiappas, Savvas M., Kamionkowski, Marc
We consider the effects of Galactic substructure on energetic neutrinos from annihilation of weakly-interacting massive particles (WIMPs) that have been captured by the Sun and Earth. Substructure...
Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements (2009)
Stern, Daniel, Jimenez, Raul, Verde, Licia, Kamionkowski, Marc, Stanford, S. Adam
We present new determinations of the cosmic expansion history from red-envelope galaxies. We have obtained for this purpose high-quality spectra with the Keck-LRIS spectrograph of red-envelope...
Stern, Daniel, Jimenez, Raul, Verde, Licia, Stanford, S. Adam, Kamionkowski, Marc
We present a spectroscopic catalog of (mostly) red galaxies in 24 galaxy clusters in the redshift range 0.17 < z < 0.92 obtained with the LRIS instrument on the Keck I telescope. Here we describe the...
Derotation of the cosmic microwave background polarization: Full-sky formalism (2009)
Gluscevic, Vera, Kamionkowski, Marc, Cooray, Asantha
Mechanisms have been proposed that might rotate the linear polarization of the cosmic microwave background (CMB) as it propagates from the surface of last scatter. In the simplest scenario, the...
A Scale-Dependent Power Asymmetry from Isocurvature Perturbations (2009)
Erickcek, Adrienne L., Hirata, Christopher M., Kamionkowski, Marc
If the hemispherical power asymmetry observed in the cosmic microwave background (CMB) on large angular scales is attributable to a superhorizon curvaton fluctuation, then the simplest model predicts...
The gamma-ray-flux PDF from galactic halo substructure (2009)
Lee, Samuel K., Ando, Shin'ichiro, Kamionkowski, Marc
One of the targets of the recently launched Fermi Gamma-ray Space Telescope is a diffuse gamma-ray background from dark-matter annihilation or decay in the Galactic halo. N-body simulations and...
De-Rotation of the Cosmic Microwave Background Polarization: Full-Sky Formalism (2009)
Gluscevic, Vera, Kamionkowski, Marc, Cooray, Asantha
Mechanisms have been proposed that might rotate the linear polarization of the cosmic microwave background (CMB) as it propagates from the surface of last scatter. In the simplest scenario, the...
Oscillations in the inflaton potential? (2009)
Pahud, Cédric, Kamionkowski, Marc, Liddle, Andrew R.
We consider a class of inflationary models with small oscillations imprinted on an otherwise smooth inflaton potential. These oscillations are manifest as oscillations in the power spectrum of...
Cosmology: Dark matter and dark energy (2009)
Caldwell, Robert, Kamionkowski, Marc
Observations continue to indicate that the Universe is dominated by invisible components — dark matter and dark energy. Shedding light on this cosmic darkness is a priority for astronomers and...
How to Derotate the Cosmic Microwave Background Polarization (2009)
If the linear polarization of the cosmic microwave background is rotated in a frequency-independent manner as it propagates from the surface of last scatter, it may introduce a B-mode polarization....
The Physics of Cosmic Acceleration (2009)
Caldwell, Robert R., Kamionkowski, Marc
The discovery that the cosmic expansion is accelerating has been followed by an intense theoretical and experimental response in physics and astronomy. The discovery implies that our most basic...
Dark matter and dark radiation (2009)
Ackerman, Lotty, Buckley, Matthew R., Carroll, Sean M., Kamionkowski, Marc
We explore the feasibility and astrophysical consequences of a new long-range U(1) gauge field (“dark electromagnetism”) that couples only to dark matter, not to the standard model. The dark...
The void abundance with non-gaussian primordial perturbations (2009)
Kamionkowski, Marc, Verde, Licia, Jimenez, Raul
We use a Press-Schechter-like calculation to study how the abundance of voids changes in models with non-Gaussian initial conditions. While a positive skewness increases the cluster abundance, a...
The void abundance with non-gaussian primordial perturbations (2009)
Kamionkowski, Marc, Verde, Licia, Jiménez, Raúl
9 pages, 3 figures.-- ArXiv pre-print available at: http://arxiv.org/abs/0809.0506
New DAMA dark-matter window and energetic-neutrino searches (2009)
Hooper, Dan, Petriello, Frank, Zurek, Kathryn M., Kamionkowski, Marc
Recently, the DAMA/LIBRA Collaboration has repeated and reinforced their claim to have detected an annual modulation in their signal rate, and have interpreted this observation as evidence for...
New DAMA dark-matter window and energetic-neutrino searches (2009)
Hooper, Dan, Petriello, Frank, Zurek, Kathryn M., Kamionkowski, Marc
Recently, the DAMA/LIBRA Collaboration has repeated and reinforced their claim to have detected an annual modulation in their signal rate, and have interpreted this observation as evidence for...
Kamionkowski, Marc, Profumo, Stefano
Recent studies have considered modifications to the standard weakly interacting massive particle scenario in which the pair annihilation cross section (times relative velocity v) is enhanced by a...
Kamionkowski, Marc, Profumo, Stefano
Recent studies have considered modifications to the standard weakly interacting massive particle scenario in which the pair annihilation cross section (times relative velocity v) is enhanced by a...
Thermal axion constraints in non-standard thermal histories (2008)
Grin, Daniel, Smith, Tristan, Kamionkowski, Marc
There is no direct evidence for radiation domination prior to big-bang nucleosynthesis, and so it is useful to consider how constraints to thermally-produced axions change in non-standard thermal...
A hemispherical power asymmetry from inflation (2008)
Erickcek, Adrienne L., Kamionkowski, Marc, Carroll, Sean M.
Measurements of cosmic microwave background temperature fluctuations by the Wilkinson Microwave Anisotropy Probe indicate that the fluctuation amplitude in one half of the sky differs from the...
Can proper motions of dark-matter subhalos be detected? (2008)
Ando, Shin'ichiro, Kamionkowski, Marc, Lee, Samuel K., Koushiappas, Savvas M.
One of the goals of NASA's Fermi Gamma-ray Space Telescope (formerly GLAST) will be the detection of gamma rays from dark-matter annihilation in the Galactic halo. Theoretical arguments suggest that...
Dark Matter and Dark Radiation (2008)
Ackerman, Lotty, Buckley, Matthew R., Carroll, Sean M., Kamionkowski, Marc
We explore the feasibility and astrophysical consequences of a new long-range U(1) gauge field ("dark electromagnetism") that couples only to dark matter, not to the Standard Model. The dark matter...
Early Annihilation and Diffuse Backgrounds in 1/v WIMP models (2008)
Kamionkowski, Marc, Profumo, Stefano
Several recent studies have considered modifications to the standard weakly-interacting massive particle (WIMP) scenario in which the cross section (times relative velocity v) for pair annihilation...
Inflationary gravitational-wave background and measurements of the scalar spectral index (2008)
Smith, Tristan L., Kamionkowski, Marc, Cooray, Asantha
Inflation predicts a stochastic background of gravitational waves over a broad range of frequencies, from those accessible with cosmic microwave background (CMB) measurements, to those accessible...
Superhorizon perturbations and the cosmic microwave background (2008)
Erickcek, Adrienne L., Carroll, Sean M., Kamionkowski, Marc
Superhorizon perturbations induce large-scale temperature anisotropies in the cosmic microwave background (CMB) via the Grishchuk-Zel'dovich effect. We analyze the CMB temperature anisotropies...
The Gamma-Ray-Flux Probability Distribution Function from Galactic Halo Substructure (2008)
Lee, Samuel K., Ando, Shin'ichiro, Kamionkowski, Marc
One of the targets of the recently launched Fermi Gamma-ray Space Telescope is a diffuse gamma-ray background from dark-matter annihilation or decay in the Galactic halo. N-body simulations and...
How to De-Rotate the Cosmic Microwave Background Polarization (2008)
If the linear polarization of the cosmic microwave background (CMB) is rotated in a frequency-independent manner as it propagates from the surface of last scatter, it may introduce a B-mode...
Dynamical and gravitational instability of an oscillating-field dark energy and dark matter (2008)
Johnson, Matthew C., Kamionkowski, Marc
Coherent oscillations of a scalar field can mimic the behavior of a perfect fluid with an equation-of-state parameter determined by the properties of the potential, possibly driving accelerated...
Can proper motions of dark-matter subhalos be detected? (2008)
Ando, Shin'ichiro, Kamionkowski, Marc, Lee, Samuel K., Koushiappas, Savvas M.
One of the goals of NASA's Fermi Gamma-ray Space Telescope (formerly GLAST) will be detection of gamma rays from dark-matter annihilation in the Galactic halo. Theoretical arguments suggest that dark...
The Void Abundance with Non-Gaussian Primordial Perturbations (2008)
Kamionkowski, Marc, Verde, Licia, Jimenez, Raul
We use a Press-Schechter-like calculation to study how the abundance of voids changes in models with non-Gaussian initial conditions. While a positive skewness increases the cluster abundance, a...
Zepf, Stephen E., Stern, Daniel, Maccarone, Thomas J., Kundu, Arunav, Kamionkowski, Marc, Rhode, Katherine L., ...
We present Keck LRIS spectroscopy of the black hole–hosting globular cluster RZ 2109 in the Virgo elliptical galaxy NGC 4472. We find that this object has extraordinarily broad [O III] λ5007 and...
The New DAMA Dark-Matter Window and Energetic-Neutrino Searches (2008)
Hooper, Dan, Petriello, Frank, Zurek, Kathryn M., Kamionkowski, Marc
Recently, the DAMA/LIBRA collaboration has repeated and reinforced their claim to have detected an annual modulation in their signal rate, and have interpreted this observation as evidence for...
Superhorizon Perturbations and the Cosmic Microwave Background (2008)
Erickcek, Adrienne L., Carroll, Sean M., Kamionkowski, Marc
Superhorizon perturbations induce large-scale temperature anisotropies in the cosmic microwave background (CMB) via the Grishchuk-Zel'dovich effect. We analyze the CMB temperature anisotropies...
Oscillations in the inflaton potential? (2008)
Pahud, Cédric, Kamionkowski, Marc, Liddle, Andrew R
We consider a class of inflationary models with small oscillations imprinted on an otherwise smooth inflaton potential. These oscillations are manifest as oscillations in the power spectrum of...
A Hemispherical Power Asymmetry from Inflation (2008)
Erickcek, Adrienne L., Kamionkowski, Marc, Carroll, Sean M.
Measurements of CMB temperature fluctuations by the Wilkinson Microwave Anisotropy Probe (WMAP) indicate that the fluctuation amplitude in one half of the sky differs from the amplitude in the other...
Zepf, Stephen E., Stern, Daniel, Maccarone, Thomas J., Kundu, Arunav, Kamionkowski, Marc, Rhode, Katherine L., ...
We present Keck LRIS spectroscopy of the black hole-hosting globular cluster RZ2109 in the Virgo elliptical galaxy NGC 4472. We find that this object has extraordinarily broad [OIII]5007 and...
Galactic substructure and direct detection of dark matter (2008)
Kamionkowski, Marc, Koushiappas, Savvas M.
We study the effects of substructure in the Galactic halo on direct detection of dark matter, on searches for energetic neutrinos from weakly interacting massive particles (WIMP) annihilation in the...
Dynamical and Gravitational Instability of Oscillating-Field Dark Energy and Dark Matter (2008)
Johnson, Matthew C., Kamionkowski, Marc
Coherent oscillations of a scalar field can mimic the behavior of a perfect fluid with an equation-of-state parameter determined by the properties of the potential, possibly driving accelerated...
Axion constraints in nonstandard thermal histories (2008)
Grin, Daniel, Smith, Tristan L., Kamionkowski, Marc
It is usually assumed that dark matter is produced during the radiation-dominated era. There is, however, no direct evidence for radiation domination prior to big-bang nucleosynthesis. Two...
Red density perturbations and inflationary gravitational waves (2008)
Pagano, Luca, Cooray, Asantha, Melchiorri, Alessandro, Kamionkowski, Marc
We study the implications of recent indications from the Wilkinson Microwave Anisotropy Probe (WMAP) and other cosmological data for a red spectrum of primordial density perturbations for the...
Nonlinear Evolution of Anisotropic Cosmological Power (2008)
Ando, Shin'ichiro, Kamionkowski, Marc
There has been growing interest in the possibility of testing more precisely the assumption of statistical isotropy of primordial density perturbations. If it is to be tested with galaxy surveys at...
The inflationary gravitational-wave background and measurements of the scalar spectral index (2008)
Smith, Tristan L., Kamionkowski, Marc, Cooray, Asantha
Inflation predicts a stochastic background of gravitational waves over a broad range of frequencies, from those accessible with cosmic microwave background (CMB) measurements, to those accessible...
Solar fusion cross sections (2008)
Eric G. Adelberger, Sam M. Austin, John N. Bahcall, A. B. Balantekin, Gilles Bogaert, Lowell S. Brown, ...
Galactic Substructure and Direct Detection of Dark Matter (2008)
Kamionkowski, Marc, Koushiappas, Savvas M.
We study the effects of substructure in the Galactic halo on direct detection of dark matter, on searches for energetic neutrinos from WIMP annihilation in the Sun and Earth, and on the enhancement...
Effects of Chern-Simons gravity on bodies orbiting the Earth (2008)
Smith, Tristan L., Erickcek, Adrienne L., Caldwell, Robert R., Kamionkowski, Marc
One of the possible low-energy consequences of string theory is the addition of a Chern-Simons term to the standard Einstein-Hilbert action of general relativity. It can be argued that the...
The Electron-Screening Correction for the Proton-Proton Reaction (2007)
John Bahcall, Xuelei Chen, Marc Kamionkowski
We test the Salpeter formalism for calculating electron screening of nuclear fusion reactions by solving numerically the relevant Schrodinger equation for the fundamental proton-proton reaction. We...
Cosmic microwave background statistics for a direction-dependent primordial power spectrum (2007)
Pullen, Anthony R., Kamionkowski, Marc
Statistical isotropy of primordial perturbations is a common assumption in cosmology, but it is an assumption that should be tested. To this end, we develop cosmic microwave background statistics for...
Axion constraints in non-standard thermal histories (2007)
Grin, Daniel, Smith, Tristan L., Kamionkowski, Marc
It is usually assumed that dark matter is produced during the radiation dominated era. There is, however, no direct evidence for radiation domination prior to big-bang nucleosynthesis. Two...
Nonlinear Evolution of Anisotropic Cosmological Power (2007)
Ando, Shin'ichiro, Kamionkowski, Marc
There has been growing interest in the possibility of testing more precisely the assumption of statistical isotropy of primordial density perturbations. If it is to be tested with galaxy surveys at...
Local readout enhancement for detuned signal-recycling interferometers (2007)
Pullen, Anthony R., Chary, Ranga-Ram, Kamionkowski, Marc
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1–10 GeV from the 10°×10° region around the Galactic center. Our null results...
Constraints on radiative dark-matter decay from the cosmic microwave background (2007)
Zhang, Le, Chen, Xuelei, Kamionkowski, Marc, Si, Zong-guo, Zheng, Zheng
If dark matter decays to electromagnetically interacting particles, it can inject energy into the baryonic gas and thus affect the processes of recombination and reionization. This leaves an imprint...
Search with EGRET for a gamma ray line from the Galactic center (2007)
Pullen, Anthony R., Chary, Ranga-Ram, Kamionkowski, Marc
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1–10 GeV from the 10°×10° region around the Galactic center. Our null results...
Cosmic Microwave Background Statistics for a Direction-Dependent Primordial Power Spectrum (2007)
Pullen, Anthony R., Kamionkowski, Marc
Statistical isotropy of primordial perturbations is a common assumption in cosmology, but it is an assumption that should be tested. To this end, we develop cosmic microwave background statistics for...
Cluster magnetic fields from large scale structure shocks (2007)
Medvedev, Mikhail V., Silva, Luis O., Kamionkowski, Marc
The origin of the micro-Gauss magnetic fields in galaxy clusters is one of the outstanding problem of modern cosmology. We suggest that these fields could have been produced via the Weibel...
The effects of Chern-Simons gravity on bodies orbiting the Earth (2007)
Smith, Tristan L., Erickcek, Adrienne L., Caldwell, Robert R., Kamionkowski, Marc
One of the possible low-energy consequences of string theory is the addition of a Chern-Simons term to the standard Einstein-Hilbert action of general relativity. It can be argued that the...
Red Density Perturbations and Inflationary Gravitational Waves (2007)
Pagano, Luca, Cooray, Asantha, Melchiorri, Alessandro, Kamionkowski, Marc
We study the implications of recent indications for a red spectrum of primordial density perturbations for the detection of inflationary gravitational waves (IGWs) with forthcoming cosmic microwave...
Red Density Perturbations and Inflationary Gravitational Waves (2007)
Pagano, Luca, Cooray, Asantha, Melchiorri, Alessandro, Kamionkowski, Marc
We study the implications of recent indications for a red spectrum of primordial density perturbations for the detection of inflationary gravitational waves (IGWs) with forthcoming cosmic microwave...
Dark Matter and Dark Energy (2007)
This is a short review, aimed at a general audience, of several current subjects of research in cosmology. The topics discussed include the cosmic microwave background (CMB), with particular emphasis...
Telescope search for decaying relic axions (2007)
Grin, Daniel, Covone, Giovanni, Kneib, Jean-Paul, Kamionkowski, Marc, Blain, Andrew, Jullo, Eric
A search for optical line emission from the two-photon decay of relic axions was conducted in the galaxy clusters Abell 2667 and 2390, using spectra from the VIMOS (Visible MultiObject Spectrograph)...
Contraints on radiative dark-matter decay from the cosmic microwave background (2007)
Zhang, Le, Chen, Xuelei, Kamionkowski, Marc, Si, Zongguo, Zheng, Zheng
If dark matter decays to electromagnetically-interacting particles, it can inject energy into the baryonic gas and thus affect the processes of recombination and reionization. This leaves an imprint...
Galaxy surveys, inhomogeneous re-ionization and dark energy (2007)
Pritchard, Jonathan R., Furlanetto, Steven R., Kamionkowski, Marc
We examine the effect of inhomogeneous re-ionization on the galaxy power spectrum and the consequences for probing dark energy. To model feedback during re-ionization, we apply an ansatz setting the...
Solar system tests do rule out 1/R gravity (2006)
Erickcek, Adrienne L., Smith, Tristan L., Kamionkowski, Marc
Shortly after the addition of a 1/R term to the Einstein-Hilbert action was proposed as a solution to the cosmic-acceleration puzzle, Chiba showed that such a theory violates Solar System tests of...
A Telescope Search for Decaying Relic Axions (2006)
Grin, Daniel, Covone, Giovanni, Kneib, Jean-Paul, Kamionkowski, Marc, Blain, Andrew, Jullo, Eric
A search for optical line emission from the two-photon decay of relic axions was conducted in the galaxy clusters Abell 2667 and 2390, using spectra from the VIMOS (Visible Multi-Object Spectrograph)...
Solar System tests DO rule out 1/R gravity (2006)
Erickcek, Adrienne L., Smith, Tristan L., Kamionkowski, Marc
Shortly after the addition of a 1/R term to the Einstein-Hilbert action was proposed as a solution to the cosmic-acceleration puzzle, Chiba showed that such a theory violates Solar System tests of...
Tidal tails test the equivalence principle in the dark-matter sector (2006)
Kesden, Michael, Kamionkowski, Marc
Satellite galaxies currently undergoing tidal disruption offer a unique opportunity to constrain an effective violation of the equivalence principle in the dark sector. While dark matter in the...
Search with EGRET for a Gamma Ray Line from the Galactic Center (2006)
Pullen, Anthony R., Chary, Ranga-Ram, Kamionkowski, Marc
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1-10 GeV from the 10 X 10 degree region around the Galactic center. Our null...
Galilean Equivalence for Galactic Dark Matter (2006)
Kesden, Michael, Kamionkowski, Marc
Satellite galaxies are tidally disrupted as they orbit the Milky Way. If dark matter (DM) experiences a stronger self-attraction than baryons, stars will preferentially gain rather than lose energy...
Report of the Dark Energy Task Force (2006)
Albrecht, Andreas, Bernstein, Gary, Cahn, Robert, Freedman, Wendy L., Hewitt, Jacqueline, Hu, Wayne, ...
Dark energy appears to be the dominant component of the physical Universe, yet there is no persuasive theoretical explanation for its existence or magnitude. The acceleration of the Universe is,...
Cosmological bounds on dark-matter-neutrino interactions (2006)
Mangano, Gianpiero, Melchiorri, Alessandro, Serra, Paolo, Cooray, Asantha, Kamionkowski, Marc
We investigate the cosmological effects of a neutrino interaction with cold dark-matter. We postulate a neutrino that interacts with a "neutrino-interacting dark-matter" (NIDM) particle with an...
Tidal Tails Test the Equivalence Principle in the Dark Sector (2006)
Kesden, Michael, Kamionkowski, Marc
Satellite galaxies currently undergoing tidal disruption offer a unique opportunity to constrain an effective violation of the equivalence principle in the dark sector. Theories in which cold dark...
What Mass Are the Smallest Protohalos? (2006)
Profumo, Stefano, Sigurdson, Kris, Kamionkowski, Marc
We calculate the kinetic-decoupling temperature for weakly interacting massive particles (WIMPs) in supersymmetric (SUSY) and extra dimensional models that can account for the cold-dark-matter...
New Cosmic Microwave Background Constraint to Primordial Gravitational Waves (2006)
Smith, Tristan L., Pierpaoli, Elena, Kamionkowski, Marc
Primordial gravitational waves (GWs) with frequencies >~10^-15 Hz contribute to the radiation density of the Universe at the time of decoupling of the cosmic microwave background (CMB). This affects...
Galilean Equivalence for Galactic Dark Matter (2006)
Kesden, Michael, Kamionkowski, Marc
Satellite galaxies are tidally disrupted as they orbit the Milky Way. If dark matter (DM) experiences a stronger self-attraction than baryons, stars will preferentially gain rather than lose energy...
Cosmological bounds on dark matter-neutrino interactions (2006)
Mangano, Gianpiero, Melchiorri, Alessandro, Serra, Paolo, Cooray, Asantha, Kamionkowski, Marc
We investigate the cosmological effects of a neutrino interaction with cold dark matter. We postulate a neutrino that interacts with a ``neutrino interacting dark matter'' (NIDM) particle with an...
Cluster magnetic fields from large-scale structure and galaxy cluster shocks (2006)
Medvedev, Mikhail V., Silva, Luis O., Kamionkowski, Marc
The origin of the microgauss magnetic fields in galaxy clusters is one of the outstanding problems of modern cosmology. We have performed three-dimensional particle-in-cell simulations of the...
Galaxy surveys, inhomogeneous reionization, and dark energy (2006)
Pritchard, Jonathan R., Furlanetto, Steven R., Kamionkowski, Marc
We examine the effect of inhomogeneous reionization on the galaxy power spectrum and the consequences for probing dark energy. To model feedback during reionization, we apply an ansatz setting the...
Supermassive Black Hole Merger Rates: Uncertainties from Halo Merger Theory (2006)
Erickcek, Adrienne L., Kamionkowski, Marc, Benson, Andrew J.
The merger of two supermassive black holes is expected to produce a gravitational-wave signal detectable by the satellite LISA. The rate of supermassive-black-hole mergers is intimately connected to...
What mass are the smallest protohalos? (2006)
Profumo, Stefano, Sigurdson, Kris, Kamionkowski, Marc
We calculate the kinetic-decoupling temperature for weakly interacting massive particles (WIMPs) in supersymmetric (SUSY) and universal-extra-dimension (UED) models that can account for the...
A new cosmic microwave background constraint to primordial gravitational waves (2006)
Smith, Tristan L., Pierpaoli, Elena, Kamionkowski, Marc
Primordial gravitational waves (GWs) with frequencies > 10^{-15} Hz contribute to the radiation density of the Universe at the time of decoupling of the cosmic microwave background (CMB). The effects...
Dark matter and the CACTUS gamma-ray excess from Draco (2006)
Profumo, Stefano, Kamionkowski, Marc
The CACTUS atmospheric Cherenkov telescope collaboration recently reported a gamma-ray excess from the Draco dwarf spheroidal galaxy. Draco features a very low gas content and a large mass-to-light...
Direct detection of the inflationary gravitational-wave background (2006)
Smith, Tristan L., Kamionkowski, Marc, Cooray, Asantha
Inflation generically predicts a stochastic background of gravitational waves over a broad range of frequencies, from those accessible with cosmic microwave background (CMB) measurements, to those...
Dark Matter and the CACTUS Gamma-Ray Excess from Draco (2006)
Profumo, Stefano, Kamionkowski, Marc
The CACTUS atmospheric Cherenkov telescope collaboration recently reported a gamma-ray excess from the Draco dwarf spheroidal galaxy. Draco features a very low gas content and a large mass-to-light...
Cluster magnetic fields from large-scale-structure and galaxy-cluster shocks (2005)
Medvedev, Mikhail V., Silva, Luis O., Kamionkowski, Marc
The origin of the micro-Gauss magnetic fields in galaxy clusters is one of the outstanding problem of modern cosmology. We have performed three-dimensional particle-in-cell simulations of the...
Pair Correlations and Merger Bias (2005)
Furlanetto, Steven R., Kamionkowski, Marc
We study analytically the possibility that mergers of haloes are more highly clustered than the general population of haloes of comparable masses. We begin by investigating predictions for merger...
Dynamical Friction and Cooling Flows in Galaxy Clusters (2005)
Kim, Woong-Tae, El-Zant, Amr A., Kamionkowski, Marc
We investigate a model of galaxy clusters in which the hot intracluster gas is efficiently heated by dynamical friction (DF) of galaxies. We allow for both subsonic and supersonic motions of galaxies...
Direct detection of the inflationary gravitational wave background (2005)
Smith, Tristan L., Kamionkowski, Marc, Cooray, Asantha
Inflation generically predicts a stochastic background of gravitational waves over a broad range of frequencies, from those accessible with cosmic microwave background (CMB) measurements, to those...
Cosmic shear of the microwave background: The curl diagnostic (2005)
Cooray, Asantha, Kamionkowski, Marc, Caldwell, Robert R.
Weak-lensing distortions of the cosmic-microwave-background (CMB) temperature and polarization patterns can reveal important clues to the intervening large-scale structure. The effect of lensing is...
Cosmic Shear of the Microwave Background: The Curl Diagnostic (2005)
Cooray, Asantha, Kamionkowski, Marc, Caldwell, Robert R.
Weak-lensing distortions of the cosmic-microwave-background (CMB) temperature and polarization patterns can reveal important clues to the intervening large-scale structure. The effect of lensing is...
Gravitational-wave signature of an inspiral into a supermassive horizonless object (2005)
Kesden, Michael, Gair, Jonathan, Kamionkowski, Marc
Event horizons are among the most intriguing of general relativity's predictions. Although on firm theoretical footing, direct indications of their existence have yet to be observed. With this...
Profumo, Stefano, Sigurdson, Kris, Ullio, Piero, Kamionkowski, Marc
We show that charged particles decaying in the early Universe can induce a scale-dependent or running spectral index in the small-scale linear and nonlinear matter power spectrum and discuss examples...
Cosmic Microwave Background Fluctuations from Gravitational Waves: An Analytic Approach (2004)
Pritchard, Jonathan R., Kamionkowski, Marc
We develop an analytic approach to calculation of the temperature and polarisation power spectra of the cosmic microwave background due to inflationary gravitational waves. This approach complements...
Highly-Ionized Oxygen Absorbers in the Intergalactic Medium (2004)
Furlanetto, Steven, Phillips, Lara Arielle, Kamionkowski, Marc
Recent ultraviolet and X-ray observations of intergalactic OVI and OVII absorption systems along lines of sight to bright quasars have opened a new window onto the ``warm-hot intergalactic medium''...
Gravitational-Wave Signature of an Inspiral into a Supermassive Horizonless Object (2004)
Kesden, Michael, Gair, Jonathan, Kamionkowski, Marc
Event horizons are among the most intriguing of general relativity's predictions. Although on firm theoretical footing, direct indications of their existence have yet to be observed. With this...
Profumo, Stefano, Sigurdson, Kris, Ullio, Piero, Kamionkowski, Marc
We show that charged-particles decaying in the early Universe can induce a scale-dependent or `running' spectral index in the small-scale linear and nonlinear matter power spectrum and discuss...
Dark-matter electric and magnetic dipole moments (2004)
Sigurdson, Kris, Doran, Michael, Kurylov, Andriy, Caldwell, Robert R., Kamionkowski, Marc
We consider the consequences of a neutral dark-matter particle with a nonzero electric and/or magnetic dipole moment. Theoretical constraints, as well as constraints from direct searches, precision...
Expansion, geometry, and gravity (2004)
Caldwell, Robert R., Kamionkowski, Marc
In general-relativistic cosmological models, the expansion history, matter content, and geometry are closely intertwined. In this brief paper, we clarify the distinction between the effects of...
Particle decays during the cosmic dark ages (2004)
Chen, Xuelei, Kamionkowski, Marc
We consider particle decays during the cosmic dark ages with two aims: (1) to explain the high optical depth reported by the Wilkinson Microwave Anisotropy Probe (WMAP), and (2) to provide new...
Self-Consistent Theory of Halo Mergers (2004)
Benson, Andrew J., Kamionkowski, Marc, Hassani, Steven H.
The rate of merging of dark-matter halos is an absolutely essential ingredient for studies of both structure and galaxy formation. Remarkably, however, our quantitative understanding of the halo...
Dark-Matter Electric and Magnetic Dipole Moments (2004)
Sigurdson, Kris, Doran, Michael, Kurylov, Andriy, Caldwell, Robert R., Kamionkowski, Marc
We consider the consequences of a neutral dark-matter particle with a nonzero electric and/or magnetic dipole moment. Theoretical constraints, as well as constraints from direct searches, precision...
Charged-particle decay and suppression of primordial power on small scales (2004)
Sigurdson, Kris, Kamionkowski, Marc
We study the suppression of the small-scale power spectrum due to the decay of charged matter to dark matter prior to recombination. Prior to decay, the charged particles couple to the photon-baryon...
Dynamical-Friction Galaxy-Gas Coupling and Cluster Cooling Flows (2004)
El-Zant, Amr, Kim, Woong-Tae, Kamionkowski, Marc
We revisit the notion that galaxy motions can efficiently heat intergalactic gas in the central regions of clusters through dynamical friction. For plausible values of the galaxy mass-to-light ratio,...
Theory of Cosmic Microwave Background Polarization (2004)
Cabella, Paolo, Kamionkowski, Marc
These lectures introduce some of the basic theory of cosmic microwave background (CMB) polarization with the primary aim of developing the theory of CMB polarization from inflationary gravitational...
Generalized analysis of the direct weakly interacting massive particle searches (2004)
Kurylov, Andriy, Kamionkowski, Marc
We perform a generalized analysis of data from WIMP search experiments for pointlike WIMPs of arbitrary spin and general Lorenz-invariant WIMP-nucleus interaction. We explicitly show that in the...
Expansion, Geometry, and Gravity (2004)
Caldwell, Robert R., Kamionkowski, Marc
In general-relativistic cosmological models, the expansion history, matter content, and geometry are closely intertwined. In this brief paper, we clarify the distinction between the effects of...
New Contribution to Scattering of Weakly Interacting Massive Particles on Nuclei (2003)
Prézeau, Gary, Kurylov, Andriy, Kamionkowski, Marc, Vogel, Petr
A weakly interacting massive particle (WIMP) is perhaps the most promising candidate for the dark matter in the Galactic halo. The WIMP detection rate in laboratory searches is fixed by the cross...
Can Cosmic Shear Shed Light on Low Cosmic Microwave Background Multipoles? (2003)
Kesden, Michael, Kamionkowski, Marc, Cooray, Asantha
The lowest multipole moments of the cosmic microwave background (CMB) are smaller than expected for a scale-invariant power spectrum. One possible explanation is a cutoff in the primordial power...
Charged-particle decay and suppression of small-scale power (2003)
Sigurdson, Kris, Kamionkowski, Marc
We study the suppression of the small-scale power spectrum due to the decay of charged matter to dark matter prior to recombination. Prior to decay, the charged particles couple to the photon-baryon...
Spatial variation of the fine-structure parameter and the cosmic microwave background (2003)
Sigurdson, Kris, Kurylov, Andriy, Kamionkowski, Marc
We study the effects on cosmic microwave background (CMB) temperature and polarization anisotropies of spatial fluctuations of the fine-structure parameter between causally disconnected regions of...
Particle decays during the cosmic dark ages (2003)
Chen, Xuelei, Kamionkowski, Marc
We consider particle decays during the cosmic dark ages with two aims: (1) to explain the high optical depth reported by WMAP, and (2) to provide new constraints to the parameter space for decaying...
New contribution to WIMP-nucleus scattering (2003)
Prézeau, Gary, Kurylov, Andriy, Kamionkowski, Marc, Vogel, Petr
A weakly-interacting massive particle (WIMP) is perhaps the most promising candidate for the dark matter in the Galactic halo. The WIMP detection rate in laboratory searches is fixed by the cross...
Phantom Energy: Dark Energy with w (2003)
Caldwell, Robert R., Kamionkowski, Marc, Weinberg, Nevin N.
We explore the consequences that follow if the dark energy is phantom energy, in which the sum of the pressure and energy density is negative. The positive phantom-energy density becomes infinite in...
Generalized Analysis of Weakly-Interacting Massive Particle Searches (2003)
Kurylov, Andriy, Kamionkowski, Marc
We perform a generalized analysis of data from WIMP search experiments for point-like WIMPs of arbitrary spin and general Lorenz-invariant WIMP-nucleus interaction. We show that in the...
Can Cosmic Shear Shed Light on Low Cosmic Microwave Background Multipoles? (2003)
Kesden, Michael, Kamionkowski, Marc, Cooray, Asantha
The lowest multipole moments of the cosmic microwave background (CMB) are smaller than expected for a scale-invariant power spectrum. One possible explanation is a cutoff in the primordial power...
Spatial Variation of the Fine-Structure Parameter and the Cosmic Microwave Background (2003)
Sigurdson, Kris, Kurylov, Andriy, Kamionkowski, Marc
We study the effects on cosmic microwave background (CMB) temperature and polarization anisotropies of spatial fluctuations of the fine-structure parameter between causally disconnected regions of...
Lensing reconstruction with CMB temperature and polarization (2003)
Kesden, Michael, Cooray, Asantha, Kamionkowski, Marc
Weak gravitational lensing by an intervening large-scale structure induces a distinct signature in the cosmic microwave background (CMB) that can be used to reconstruct the weak-lensing displacement...
Aspects of the cosmic microwave background dipole (2003)
Kamionkowski, Marc, Knox, Lloyd
Cosmic microwave background (CMB) experiments generally infer a temperature fluctuation from a measured intensity fluctuation through the first term in the Taylor expansion of the Planck function,...
Sunyaev-Zeldovich Fluctuations from the First Stars? (2003)
Oh, S. Peng, Cooray, Asantha, Kamionkowski, Marc
WMAP's detection of high electron-scattering optical depth suggests substantial star formation at high redshift z~17 +/- 5. On the other hand, the recovered sigma_8 ~ 0.84 +/-0.04 disfavors a cluster...
Lensing Reconstruction with CMB Temperature and Polarization (2003)
Kesden, Michael, Cooray, Asantha, Kamionkowski, Marc
Weak gravitational lensing by intervening large-scale structure induces a distinct signature in the cosmic microwave background (CMB) that can be used to reconstruct the weak-lensing displacement...
Phantom Energy and Cosmic Doomsday (2003)
Caldwell, Robert R., Kamionkowski, Marc, Weinberg, Nevin N.
Cosmologists have long wondered whether the Universe will eventually re-collapse and end with a Big Crunch, or expand forever, becoming increasingly cold and empty. Recent evidence for a flat...
Opening A New Window to the Early Universe (2002)
Hivon, Eric, Kamionkowski, Marc
DASI has ended a 34-year quest to detect the CMB polarization, sounding the starting gun for a new race to peer further back in time, with more precision than ever before. Many more CMB polarization...
New Views of Cosmology and the Microworld (2002)
The past few years have seen several breakthroughs in particle astrophysics and cosmology. In several cases, new observations can only be explained with the introduction of new fundamental physics....
Weak lensing of the CMB: Cumulants of the probability distribution function (2002)
Kesden, Michael, Cooray, Asantha, Kamionkowski, Marc
We discuss the real-space moments of temperature anisotropies in the cosmic microwave background (CMB) due to weak gravitational lensing by intervening large-scale structure. We show that if the...
Constraining dark energy from the abundance of weak gravitational lenses (2002)
Weinberg, Nevin N., Kamionkowski, Marc
We examine the prospect of using the observed abundance of weak gravitational lenses to constrain the equation-of-state parameter w of the dark energy. Here we solve the spherical-collapse model with...
Recent results from cosmic microwave background (CMB) experiments verify several of the predictions of inflation, while ruling out a number of alternative structure-formation scenarios. Given the...
Small-Scale Cosmic Microwave Background Polarization from Reionization (2002)
Baumann, Daniel, Cooray, Asantha, Kamionkowski, Marc
We discuss fluctuations in the cosmic microwave background (CMB) polarization due to scattering from reionized gas at low redshifts. Polarization is produced by re-scattering of the primordial...
Weak Lensing of the CMB: Cumulants of the Probability Distribution Function (2002)
Kesden, Michael, Cooray, Asantha, Kamionkowski, Marc
We discuss the real-space moments of temperature anisotropies in the cosmic microwave background (CMB) due to weak gravitational lensing by intervening large-scale structure. We show that if the...
Kesden, Michael, Cooray, Asantha, Kamionkowski, Marc
Inflationary gravitational waves (GW) contribute to the curl component in the polarization of the cosmic microwave background (CMB). Cosmic shear—gravitational lensing of the CMB—converts a...
Finding Black Holes with Microlensing (2002)
Agol, Eric, Kamionkowski, Marc, Koopmans, Leon, Blandford, Roger
The MACHO and OGLE collaborations have argued that the three longest duration bulge microlensing events are likely caused by nearby black holes, given the small velocities measured with microlensing...
Weak Gravitational Lensing by Dark Clusters (2002)
Weinberg, Nevin N., Kamionkowski, Marc
We calculate the abundance of dark-matter concentrations that are sufficiently overdense to produce a detectable weak-gravitational-lensing signal. Most of these overdensities are virialized halos...
Kesden, Michael, Cooray, Asantha, Kamionkowski, Marc
Inflationary gravitational waves (GW) contribute to the curl component in the polarization of the CMB. Cosmic shear--gravitational lensing of the CMB-- converts a fraction of the dominant gradient...
Akerib, Daniel S., Carroll, Sean M., Kamionkowski, Marc, Ritz, Steven
The past few years have seen dramatic breakthroughs and spectacular and puzzling discoveries in astrophysics and cosmology. In many cases, the new observations can only be explained with the...
The Contribution of the First Stars to the Cosmic Infrared Background (2001)
Santos, Michael R., Bromm, Volker, Kamionkowski, Marc
We calculate the contribution to the cosmic infrared background from very massive metal-free stars at high redshift. We explore two plausible star-formation models and two limiting cases for the...
Statistics of Sunyaev-Zel'dovich Cluster Surveys (2001)
Benson, A. J., Reichardt, Christian, Kamionkowski, Marc
We describe a detailed analytic model for predicting statistical quantities (such as number counts, redshift distributions and sizes) of clusters detected in blank-field, thermal Sunyaev-Zel'dovich...
X-Rays from Isolated Black Holes in the Milky Way (2001)
Agol, Eric, Kamionkowski, Marc
Galactic stellar-population-synthesis models, chemical-enrichment models, and long-duration Bulge microlensing events indicate about N_tot=(0.1-1) billion stellar-mass black holes reside in our...
A novel antimatter detector based on X-ray deexcitation of exotic atoms (2001)
Mori, Kaya, Hailey, Charles J., Baltz, Edward A., Craig, William W., Kamionkowski, Marc, Serber, William T., ...
We propose a novel antiparticle detector. The gaseous antiparticle spectrometer (GAPS) effects particle identification through the characteristic X-rays emitted by antiparticles when they form exotic...
Dark-matter spike at the galactic center? (2001)
Ullio, Piero, Zhao, Hong-Sheng, Kamionkowski, Marc
The past growth of the central black hole (BH) might have enhanced the density of cold dark matter halo particles at the galactic center. We compute this effect in realistic growth models of the...
Kinetic decoupling of neutralino dark matter (2001)
Chen, Xuelei, Kamionkowski, Marc, Zhang, Xinmin
After neutralinos cease annihilating in the early Universe, they may still scatter elastically from other particles in the primordial plasma. At some point in time, however, they will eventually stop...
Spin-dependent WIMPs in DAMA? (2001)
Ullio, Piero, Kamionkowski, Marc, Vogel, Petr
We investigate whether the annual modulation observed in the DAMA experiment can be due to a weakly-interacting massive particle (WIMP) with an axial-vector (spin-dependent; SD) coupling to nuclei....
Theoretical Estimates of Intrinsic Galaxy Alignment (2001)
Mackey, Jonathan, White, Martin, Kamionkowski, Marc
It has recently been argued that the observed ellipticities of galaxies may be determined at least in part by the primordial tidal gravitational field in which the galaxy formed. Long-range...
Spintessence! New Models for Dark Matter and Dark Energy (2001)
Boyle, Latham A., Caldwell, Robert R., Kamionkowski, Marc
We investigate a class of models for dark matter and/or negative-pressure, dynamical dark energy consisting of ``spintessence,'' a complex scalar field $\phi$ spinning in a U(1)-symmetric potential...
Kinetic decoupling of neutralino dark matter (2001)
Chen, Xuelei, Kamionkowski, Marc, Zhang, Xinmin
After neutralinos cease annihilating in the early Universe, they may still scatter elastically from other particles in the primordial plasma. At some point in time, however, they will eventually stop...
Ullio, Piero, Kamionkowski, Marc
An annual modulation in the event rate of the NaI detector of the DAMA collaboration has been used to infer the existence of particle dark matter in the Galactic halo. Bounds on the WIMP mass and...
Galactosynthesis Predictions at High Redshift (2001)
Buchalter, Ari, Jimenez, Raul, Kamionkowski, Marc
We predict the Tully-Fisher (TF) and surface-brightness--magnitude relation for disk galaxies at z=3 and discuss the origin of these scaling relations and their scatter. We show that the variation of...
A Dark-Matter Spike at the Galactic Center? (2001)
Ullio, Piero, Zhao, HongSheng, Kamionkowski, Marc
The past growth of the central black hole (BH) might have enhanced the density of cold dark matter halo particles at the Galactic center. We compute this effect in realistic growth models of the...
Dark-matter spike at the galactic center? (2001)
Ullio, Piero, HongSheng Zhao, Kamionkowski, Marc
The past growth of the central black hole (BH) might have enhanced the density of cold dark matter halo particles at the Galactic center. We compute this effect in realistic growth models of the...
Detection of Gravitational Waves from Inflation (2000)
Kamionkowski, Marc, Jaffe, Andrew H.
Recent measurements of temperature fluctuations in the cosmic microwave background (CMB) indicate that the Universe is flat and that large-scale structure grew via gravitational infall from...
Tests for primordial non-Gaussianity (2000)
Verde, Licia, Jimenez, Raul, Kamionkowski, Marc, Matarrese, Sabino
We investigate the relative sensitivities of several tests for deviations from Gaussianity in the primordial distribution of density perturbations. We consider models for non-Gaussianity that mimic...
Spin-Dependent WIMPs in DAMA? (2000)
Ullio, Piero, Kamionkowski, Marc, Vogel, Petr
We investigate whether the annual modulation observed in the DAMA experiment can be due to a weakly-interacting massive particle (WIMP) with an axial-vector (spin-dependent; SD) coupling to nuclei....
On Galaxy-Cluster Sizes and Temperatures (2000)
Verde, Licia, Kamionkowski, Marc, Mohr, Joseph J., Benson, Andrew J.
We show that the distribution of the sizes and temperatures of clusters can be used to constrain cosmological models. The size-temperature (ST) distribution predicted in a flat Gaussian...
Ullio, Piero, Kamionkowski, Marc
An annual modulation in the event rate of the NaI detector of the DAMA collaboration has been used to infer the existence of particle dark matter in the Galactic halo. Bounds on the WIMP mass and...
Galactosynthesis: Halo Histories, Star Formation, and Disks (2000)
Buchalter, Ari, Jimenez, Raul, Kamionkowski, Marc
We investigate the effects of a variety of ingredients that must enter into a realistic model for disk-galaxy formation, focusing primarily on the Tully-Fisher (TF) relation and its scatter in...
Two Ways of Biasing Galaxy Formation (2000)
Catelan, Paolo, Porciani, Cristiano, Kamionkowski, Marc
We calculate the galaxy bispectrum in both real and redshift space adopting the most common prescriptions for local Eulerian biasing and Lagrangian evolving-bias model. We show that the two biasing...
Intrinsic and Extrinsic Galaxy Alignment (2000)
Catelan, Paolo, Kamionkowski, Marc, Blandford, Roger D.
We show with analytic models that the assumption of uncorrelated intrinsic ellipticities of target sources that is usually made in searches for weak gravitational lensing due to large-scale mass...
The Dearth of Halo Dwarf Galaxies: Is There Power on Short Scales? (2000)
Kamionkowski, Marc, Liddle, Andrew R.
N-body simulations of structure formation with scale-invariant primordial perturbations show significantly more virialized objects of dwarf-galaxy mass in a typical galactic halo than are observed...
Polarization pursuers’ guide (2000)
Jaffe, Andrew H., Kamionkowski, Marc, Wang, Limin
We calculate the detectability of the polarization of the cosmic microwave background (CMB) as a function of the sky coverage, angular resolution, and instrumental sensitivity for a hypothetical...
Cosmic microwave background bispectrum and inflation (2000)
Wang, Limin, Kamionkowski, Marc
We derive an expression for the non-Gaussian cosmic microwave background (CMB) statistic Il3 defined recently by Ferreira, Magueijo, and Górski in terms of the slow-roll-inflation parameters ε and...
The Second Peak: The Dark-Energy Density and the Cosmic Microwave Background (2000)
Kamionkowski, Marc, Buchalter, Ari
Supernova evidence for a negative-pressure dark energy (e.g., cosmological constant or quintessence) that contributes a fraction $\Omega_\Lambda\simeq0.7$ of closure density has been bolstered by the...
The cosmic microwave background and particle physics (1999)
Kamionkowski, Marc, Kosowsky, Arthur
In forthcoming years, connections between cosmology and particle physics will become increasingly important with the advent of a new generation of cosmic microwave background (CMB) experiments. Here,...
Cosmic microwave background temperature and polarization anisotropy in Brans-Dicke cosmology (1999)
Chen, Xuelei, Kamionkowski, Marc
We develop a formalism for calculating cosmic microwave background (CMB) temperature and polarization anisotropies in cosmological models with Brans-Dicke gravity. We then modify publicly available...
The dearth of halo dwarf galaxies: is there power on short scales? (1999)
Kamionkowski, Marc, Liddle, Andrew R.
N-body simulations of structure formation with scale-invariant primordial perturbations show significantly more virialized objects of dwarf-galaxy mass in a typical galactic halo than are observed...
Testing linear-theory predictions of galaxy formation (1999)
Sugerman, Ben, Summers, F. J., Kamionkowski, Marc
The angular momentum of galaxies is routinely ascribed to a process of tidal torques acting during the early stages of gravitational collapse, and is predicted from the initial mass distribution...
A Polarization Pursuers' Guide (1999)
Jaffe, Andrew H., Kamionkowski, Marc, Wang, Limin
We calculate the detectability of the polarization of the cosmic microwave background (CMB) as a function of the sky coverage, angular resolution, and instrumental sensitivity for a hypothetical...
Cosmological Signature of New Parity-Violating Interactions (1999)
Lue, Arthur, Wang, Limin, Kamionkowski, Marc
Are there any manifestations of parity violation other than those observed in weak interactions? A map of the cosmic microwave background (CMB) temperature and polarization will provide a new...
The Cosmic Microwave Background Bispectrum and Inflation (1999)
Wang, Limin, Kamionkowski, Marc
We derive an expression for the non-Gaussian cosmic-microwave-background (CMB) statistic $I_l^3$ defined recently by Ferreira, Magueijo, and G\'orski in terms of the slow-roll-inflation parameters...
Large-scale structure, the cosmic microwave background, and primordial non-gaussianity (1999)
Verde, Licia, Wang, Limin, Heavens, Alan, Kamionkowski, Marc
Since cosmic-microwave-background (CMB) and large-scale-structure (LSS) data will shortly improve dramatically with the Microwave Anisotropy Probe (MAP) and Planck Surveyor, and the Anglo-Australian...
Cosmic Microwave Background Temperature and Polarization Anisotropy in Brans-Dicke Cosmology (1999)
Chen, Xuelei, Kamionkowski, Marc
We develop a formalism for calculating cosmic microwave background (CMB) temperature and polarization anisotropies in cosmological models with Brans-Dicke gravity. We then modify publicly available...
New constraint on open cold-dark-matter models (1999)
Kinkhabwala, Ali, Kamionkowski, Marc
We calculate the large-angle cross correlation between the cosmic-microwave-background temperature and the x-ray-background intensity expected in an open universe with cold dark matter (CDM) and a...
The Cosmic Microwave Background and Particle Physics (1999)
Kamionkowski, Marc, Kosowsky, Arthur
In forthcoming years, connections between cosmology and particle physics will be made increasingly important with the advent of a new generation of cosmic microwave background (CMB) experiments....
The Angular Three-Point Correlation Function in the Quasilinear Regime (1999)
Buchalter, Ari, Kamionkowski, Marc, Jaffe, Andrew H.
We calculate the normalized angular three-point correlation function (3PCF), $q$, as well as the normalized angular skewness, $s_3$, assuming the small-angle approximation, for a biased mass...
The Power Spectrum, Bias Evolution, and the Spatial Three-Point Correlation Function (1999)
Buchalter, Ari, Kamionkowski, Marc
We calculate perturbatively the normalized spatial skewness, $S_3$, and full three-point correlation function (3PCF), $\zeta$, induced by gravitational instability of Gaussian primordial fluctuations...
Indirect Detection of Neutralino Annihilation from Three-body Channels (1999)
Chen, Xuelei, Kamionkowski, Marc
Three-body final states are included in the calculation of cross section and neutrino production in neutralino annihilations. In some regions of the parameter space, three-body channels maybe...
The first space-based gravitational-wave detectors (1999)
Caldwell, R. R., Kamionkowski, Marc, Wadley, Leven
Gravitational waves provide a laboratory for general relativity and a window to energetic astrophysical phenomena invisible with electromagnetic radiation. Several terrestrial detectors are currently...
Cosmological Signature of New Parity-Violating Interactions (1998)
Lue, Arthur, Wang, Limin, Kamionkowski, Marc
Does Nature yield any manifestations of parity violation other than those observed in weak interactions? A map of the cosmic microwave background (CMB) temperature and polarization will provide a new...
Solar fusion cross sections (1998)
Adelberger, Eric G., Austin, Sam M., Bahcall, John N., Balantekin, A. B., Bogaert, Gilles, Brown, Lowell S., ...
We review and analyze the available information on the nuclear-fusion cross sections that are most important for solar energy generation and solar neutrino production. We provide best values for the...
The Cosmic Microwave Background: Beyond the Power Spectrum (1998)
Much recent work on the cosmic microwave background (CMB) has focussed on the angular power spectrum of temperature anisotropies and particularly on the recovery of cosmological parameters from...
I review two different connections between particle theory and early-Universe cosmology: (1) Cosmic-microwave-background (CMB) tests of inflation and (2) particle dark matter. The inflationary...
New Constraint on Open Cold-Dark-Matter Models (1998)
Kinkhabwala, Ali, Kamionkowski, Marc
We calculate the large-angle cross-correlation between the cosmic-microwave-background (CMB) temperature and the x-ray-background (XRB) intensity expected in an open Universe with cold dark matter...
Calculation of the Ostriker-Vishniac effect in cold dark matter models (1998)
Jaffe, Andrew H., Kamionkowski, Marc
We present a new derivation of the cosmic microwave background anisotropy spectrum from the Ostriker-Vishniac effect for an open, flat, or closed universe, and calculate the anisotropy expected in...
Slow-roll inflation generically makes several predictions: a flat Universe, primordial adiabatic density perturbations, and a stochastic gravity-wave background. Each inflation model will further...
The First Space-Based Gravitational-Wave Detectors (1998)
Caldwell, R. R., Kamionkowski, Marc, Wadley, Leven
Gravitational waves provide a laboratory for general relativity and a window to energetic astrophysical phenomena invisible with electromagnetic radiation. Several terrestrial detectors are currently...
Three-body annihilation of neutralinos below two-body thresholds (1998)
Chen, Xuelei, Kamionkowski, Marc
We calculate the cross section for s-wave neutralino annihilation to three-body final states below the W+W- and tbar t thresholds. Such three-body channels may dominate the annihilation cross section...
The Case of the Curved Universe: Open, Closed, or Flat? (1998)
This is a short article on inflation, the geometry of the Universe, and the cosmic microwave background that appeared as a Perspective in Science magazine.
Three-Body Annihilation of Neutralinos Below Two-Body Thresholds (1998)
Chen, Xuelei, Kamionkowski, Marc
We calculate the cross section for s-wave neutralino annihilation to three-body final states below the W^+ W^- and t-bar t thresholds. Such three-body channels may dominate the annihilation cross...
Electron-screening correction for the proton-proton reaction (1998)
Bahcall, John N., Chen, Xuelei, Kamionkowski, Marc
We test the Salpeter formalism for the electron screening of the solar proton-proton fusion reaction by solving numerically the relevant Schrödinger equation. We evaluate exactly the square of the...
Galactic halo models and particle dark-matter detection (1998)
Kamionkowski, Marc, Kinkhabwala, Ali
Rates for detection of weakly interacting massive-particle (WIMP) dark matter are usually carried out assuming the Milky Way halo is an isothermal sphere. However, it is possible that our halo is not...
Forthcoming cosmic microwave background experiments (CMB) will provide precise new tests of structure-formation theories. The geometry of the Universe may be determined robustly, and the classical...
Detectability of inflationary gravitational waves with microwave background polarization (1998)
Kamionkowski, Marc, Kosowsky, Arthur
Inflation predicts specific relations between the amplitudes and spectral indices of the primordial spectrum of density (scalar metric) perturbations and gravitational waves (tensor metric...
Cosmic Microwave Background Tests of Inflation (1997)
Inflation provides a unified paradigm for understanding the isotropy of the cosmic microwave background (CMB), the flatness problem, and the origin of large-scale structure. Although the physics...
Theory and Statistics of Weak Lensing from Large-Scale Mass Inhomogeneities (1997)
Kamionkowski, Marc, Babul, Arif, Cress, Catherine M., Refregier, Alexandre
Weak lensing by large-scale mass inhomogeneities in the Universe induces correlations in the observed ellipticities of distant sources. We first review the harmonic analysis and statistics required...
WIMP and Axion Dark Matter (1997)
There is almost universal agreement among cosmologists that most of the matter in the Universe is dark, and there are very good reasons to believe that most of this dark matter must be nonbaryonic....
Getting around cosmic variance (1997)
Kamionkowski, Marc, Loeb, Abraham
Cosmic microwave background (CMB) anisotropies probe the primordial density field at the edge of the observable Universe. There is a limiting precision (“cosmic variance”) with which anisotropies...
Galactic Halo Models and Particle Dark-Matter Detection (1997)
Kamionkowski, Marc, Kinkhabwala, Ali
Rates for detection of weakly-interacting massive-particle (WIMP) dark matter are usually carried out assuming the Milky Way halo is an isothermal sphere. However, it is possible that our halo is not...
Instability of the one-texture universe (1997)
Chen, Xuelei, Hindmarsh, Mark, Kamionkowski, Marc, Liddle, Andrew R.
The one-texture universe, introduced by Davis in 1987, is a homogeneous mapping of a scalar field with an S^3 vacuum into a closed universe. It has long been known to mathematicians that such...
Bahcall, John N., Kamionkowski, Marc
In a series of recent papers, Ivanov et al. and Oberhummer et al. have calculated the rate for the $p + p \to d + e^+ + \nu_e$ reaction with a zero-range four-fermion effective interaction and find a...
Statistics of cosmic microwave background polarization (1997)
Kamionkowski, Marc, Kosowsky, Arthur, Stebbins, Albert
We present a formalism for analyzing a full-sky temperature and polarization map of the cosmic microwave background. Temperature maps are analyzed by expanding over the set of spherical harmonics to...
Detectability of Inflationary Gravitational Waves with Microwave Background Polarization (1997)
Kamionkowski, Marc, Kosowsky, Arthur
Inflation predicts specific relations between the amplitudes and spectral indices of the primordial spectrum of density (scalar metric) perturbations and gravitational waves (tensor metric...
Getting Around Cosmic Variance (1997)
Kamionkowski, Marc, Loeb, Abraham
Cosmic microwave background (CMB) anisotropies probe the primordial density field at the edge of the observable Universe. There is a limiting precision (``cosmic variance'') with which anisotropies...
A Probe of Primordial Gravity Waves and Vorticity (1997)
Kamionkowski, Marc, Kosowsky, Arthur, Stebbins, Albert
A formalism for describing an all-sky map of the polarization of the cosmic microwave background is presented. The polarization pattern on the sky can be decomposed into two geometrically distinct...
Comment on "Dispersion velocity of galactic dark matter particles" (1997)
Gates, Evalyn, Kamionkowski, Marc, Turner, Michael S.
A Comment on the Letter by R. Cowsiki Charu Ratnam, and P. Bhattacharjee, Phys. Rev. Lett. 76, 3886 (1996). The authors of the Letter offer a Reply.
Indirect detection of a light Higgsino motivated by collider data (1997)
Freese, Katherine, Kamionkowski, Marc
Kane and Wells recently argued that collider data point to a Higgsino-like lightest supersymmetric partner which would explain the dark matter in our Galactic halo. They discuss direct detection of...
On the instability of the one-texture universe (1997)
Chen, Xuelei, Hindmarsh, Mark, Kamionkowski, Marc, Liddle, Andrew R
The one-texture universe, introduced by Davis in 1987, is a homogeneous mapping of a scalar field with an $S^3$ vacuum into a closed universe. It has long been known to mathematicians that such...
The Electron-Screening Correction for the Proton-Proton Reaction (1996)
Bahcall, John N., Chen, Xuelei, Kamionkowski, Marc
We test the Salpeter formalism for the electron screening of the solar proton-proton fusion reaction by solving numerically the relevant Schrodinger equation. We evaluate exactly the square of the...
Statistics of Cosmic Microwave Background Polarization (1996)
Kamionkowski, Marc, Kosowsky, Arthur, Stebbins, Albert
We present a formalism for analyzing a full-sky temperature and polarization map of the cosmic microwave background. Temperature maps are analyzed by expanding over the set of spherical harmonics to...
Several ideas for new physics beyond the standard model may provide particle candidates for the dark matter in the Galactic halo. The two leading candidates are an axion and a weakly-interacting...
A Probe of Primordial Gravity Waves and Vorticity (1996)
Kamionkowski, Marc, Kosowsky, Arthur, Stebbins, Albert
A formalism for describing an all-sky map of the polarization of the cosmic microwave background is presented. The polarization pattern on the sky can be decomposed into two geometrically distinct...
Indirect Detection of a Light Higgsino Motivated by Collider Data (1996)
Freese, Katherine, Kamionkowski, Marc
Kane and Wells recently argued that collider data point to a Higgsino-like lightest supersymmetric partner which would explain the dark matter in our Galactic halo. They discuss direct detection of...
Matter-microwave correlations in an open universe (1996)
In an intriguing recent paper, Crittenden and Turok proposed cross-correlating the cosmic microwave background with tracers of the matter density to probe the existence of a cosmological constant....
A Low-Density Closed Universe (1996)
Kamionkowski, Marc, Toumbas, Nicolaos
Matter with an equation of state p = -ρ/3 may arise in certain scalar field theories, and the energy density of this matter decreases as a-2 with the scale factor a of the Universe. In this case,...
Cosmological-parameter determination with microwave background maps (1996)
Jungman, Gerard, Kamionkowski, Marc, Kosowsky, Arthur, Spergel, David N.
The angular power spectrum of the cosmic microwave background (CMB) contains information on virtually all cosmological parameters of interest, including the geometry of the Universe (Ω), the baryon...
Comment on ``The Dispersion Velocity of Galactic Dark Matter Particles'' (1996)
Gates, Evalyn, Kamionkowski, Marc, Turner, Michael S.
In a recent Letter (astro-ph/9605001), Cowsik et al. claim that a self-consistent treatment of the dark Galactic halo requires that the local velocity dispersion of dark-matter particles be $600$...
Determining Cosmological Parameters from the Microwave Background (1996)
Kosowsky, Arthur, Kamionkowski, Marc, Jungman, Gerard, Spergel, David N.
Recently funded satellites will map the cosmic microwave background radiation with unprecedented sensitivities and angular resolutions. Assuming only primordial adiabatic scalar and tensor...
Do We Know the Geometry of the Universe? (1996)
Kamionkowski, Marc, Toumbas, Nicolaos
It is quite remarkable that seventy years after Hubble discovered the expansion of the Universe, we still have no idea in which of the three Friedmann-Robertson-Walker geometries we live. Most of the...
Parallax-Shifted Microlensing Events from Ground-Based Observations of the Galactic Bulge (1996)
Buchalter, Ari, Kamionkowski, Marc
The parallax effect in ground-based microlensing (ML) observations consists of a distortion to the standard ML light curve arising from the Earth's orbital motion. In most cases, the resolution in...
Matter/Microwave Correlations in an Open Universe (1996)
In an intriguing recent paper, Crittenden and Turok proposed cross-correlating the cosmic microwave background (CMB) with tracers of the matter density to probe the existence of a cosmological...
Weighing the Universe with the Cosmic Microwave Background (1996)
Jungman, Gerard, Kamionkowski, Marc, Kosowsky, Arthur, Spergel, David N.
Variations in Ω, the total density of the Universe, leave an imprint on the power spectrum of temperature fluctuations in the cosmic microwave background (CMB). We evaluate the precision with which...
A Low-Density Closed Universe (1996)
Kamionkowski, Marc, Toumbas, Nicolaos
Matter with an equation of state $p=-\rho/3$ may arise in certain scalar field theories, and the energy density of this matter decreases as $a^{-2}$ with the scale factor $a$ of the Universe. In this...
Future Cosmic Microwave Background Constraints to the Baryon Density (1996)
Kamionkowski, Marc, Jungman, Gerard, Kosowsky, Arthur, Spergel, David N.
We discuss what can be learned about the baryon density from an all-sky map of the cosmic microwave background (CMB) with sub-degree angular resolution. With only minimal assumptions about the...
Cosmological-Parameter Determination with Microwave Background Maps (1995)
Jungman, Gerard, Kamionkowski, Marc, Kosowsky, Arthur, Spergel, David N.
The angular power spectrum of the cosmic microwave background (CMB) contains information on virtually all cosmological parameters of interest, including the geometry of the Universe ($\Omega$), the...
Rates for Color Shifted Microlensing Events (1995)
Buchalter, Ari, Kamionkowski, Marc, Rich, R. Michael
If the objects responsible for gravitational microlensing (ML) of Galactic-bulge stars are faint dwarfs, then blended light from the lens will distort the shape of the ML light curve and shift the...
Weighing the Universe with the Cosmic Microwave Background (1995)
Jungman, Gerard, Kamionkowski, Marc, Kosowsky, Arthur, Spergel, David N.
Variations in $\Omega$, the total density of the Universe, leave a clear and distinctive imprint on the power spectrum of temperature fluctuations in the cosmic microwave background (CMB). This...
Kamionkowski, Marc, Griest, Kim, Jungman, Gerard, Sadoulet, Bernard
We compare the rate for scattering of neutralinos from nuclei with the flux of muons induced by energetic neutrinos from neutralino annihilation in the Sun and Earth. We consider scalar and spin...
Solar neutrinos: Radiative corrections in neutrino-electron scattering experiments (1995)
Bahcall, John N., Kamionkowski, Marc, Sirlin, Alberto
Radiative corrections to the electron recoil-energy spectra and to total cross sections are computed for neutrino-electron scattering by solid neutrinos. Radiative corrections change monotonically...
γ rays from neutralino annihilation (1995)
Jungman, Gerard, Kamionkowski, Marc
We calculate the flux of cosmic γ rays expected from the annihilation of neutralinos in the galactic halo. Our calculation of the annihilation cross section to two photons improves the existing...
Solar Neutrinos: Radiative Corrections in Neutrino-Electron Scattering Experiments (1995)
Bahcall, John N., Kamionkowski, Marc, Sirlin, Alberto
Radiative corrections to the electron recoil-energy spectra and to total cross sections are computed for neutrino-electron scattering by solar neutrinos. Radiative corrections change monotonically...
Gamma Rays from Neutralino Annihilation (1995)
Jungman, Gerard, Kamionkowski, Marc
We calculate the flux of cosmic gamma rays expected {}from the annihilation of neutralinos in the Galactic halo. Our calculation of the annihilation cross section to two photons improves the existing...
Neutrinos from particle decay in the Sun and Earth (1995)
Jungman, Gerard, Kamionkowski, Marc
Weakly interacting massive particles (WIMP’s) may be indirectly detected by observation of upward muons induced by energetic neutrinos from annihilation of WIMP’s that have accumulated in the Sun...
Model-Independent Comparison of Direct vs. Indirect Detection of Supersymmetric Dark Matter (1994)
Kamionkowski, Marc, Griest, Kim, Jungman, Gerard, Sadoulet, Bernard
We compare the rate for elastic scattering of neutralinos from various nuclei with the flux of upward muons induced by energetic neutrinos from neutralino annihilation in the Sun and Earth. We...
If stars at the lower end of the main sequence are responsible for the microlensing events observed in the Galactic bulge, then light from the lensing star contributes to the observed brightness. The...
Neutrinos From Particle Decay in the Sun and Earth (1994)
Jungman, Gerard, Kamionkowski, Marc
Weakly interacting massive particles (WIMPs) may be indirectly detected by observation of upward muons induced by energetic neutrinos from annihilation of WIMPs that have accumulated in the Sun...
Cosmic Microwave Background Anisotropies and the Geometry of the Universe (1994)
In this talk, I review some recent work on cosmic microwave background (CMB) anisotropies in an open universe. I emphasize that the observed CMB anisotropies are still consistent with a low value of...
CBR Anisotropy in an Open Inflation, CDM Cosmogony (1994)
Kamionkowski, Marc, Ratra, Bharat, Spergel, David N., Sugiyama, Naoshi
We compute the cosmic background radiation anisotropy, produced by energy-density fluctuations generated during an early epoch of inflation, in an open cosmological model based on the cold dark...
Diffuse Gamma Rays from WIMP Decay and Annihilation (1994)
I discuss contributions to the diffuse gamma-ray background from decay and annihilation of weakly interacting massive particles (WIMPs). I first review the calculation of the cosmological abundance...
Indirect Detection of WIMPs (1994)
I review several proposed techniques for indirect detection of weakly interacting massive particles (WIMPs) in the halo. I focus on distinctive signatures from cosmic-ray positrons, antiprotons, and...
Gravitational radiation from first-order phase transitions (1994)
Kamionkowski, Marc, Kosowsky, Arthur, Turner, Michael S.
We consider the stochastic background of gravity waves produced by first-order cosmological phase transitions from two types of sources: colliding bubbles and hydrodynamic turbulence. First we...
Cosmic-ray antiprotons from neutralino annihilation into gluons (1994)
Jungman, Gerard, Kamionkowski, Marc
We estimate the flux of cosmic-ray antiprotons expected from the annihilation of neutralinos in the galactic halo. The antiproton signal may offer an important alternative detection scheme in the...
Kamionkowski, Marc, Krauss, Lawrence M., Ressell, M. Ted
Predicted rates for direct and indirect detection of dark-matter neutralinos depend in general on the spin content of the nucleon. Neutralinos that are predominantly $B$-ino are the likeliest...
Microwave Background Fluctuations in an Open Universe (1994)
Spergel, David N., Pen, Ue-Li, Kamionkowski, Marc, Sugiyama, Naoshi
( to appear in: Proceedings of the Nishonomiya Yukawa Memorial Symposium Edited by M. Sasaki) There are several models for generating fluctuations in an open universe that are compatible with the...
Kamionkowski, Marc, Spergel, David N., Sugiyama, Naoshi
We perform detailed calculations of cosmic microwave background (CMB) anisotropies in a CDM-dominated open universe with primordial adiabatic density perturbations for a variety of reionization...
Vacuum-polarization corrections to solar-fusion rates (1994)
Kamionkowski, Marc, Bahcall, John N.
The vacuum-polarization (VP) corrections to rates for nuclear-fusion reactions in the pp chain and in the CNO cycle are calculated. For the reactions of particular importance to the solar-neutrino...
Large-Angle Cosmic Microwave Background Anisotropies in an Open Universe (1993)
Kamionkowski, Marc, Spergel, David N.
If the Universe is open, scales larger than the curvature scale may be probed by large-angle fluctuations in the cosmic microwave background (CMB). We consider primordial adiabatic perturbations and...
Gravitational Radiation from First-Order Phase Transitions (1993)
Kamionkowski, Marc, Kosowsky, Arthur, Turner, Michael S.
We consider the stochastic background of gravity waves produced by first-order cosmological phase transitions from two types of sources: colliding bubbles and hydrodynamic turbulence. First we...
Cosmic-Ray Antiprotons from Neutralino Annihilation into Gluons (1993)
Jungman, Gerard, Kamionkowski, Marc
We estimate the flux of cosmic-ray antiprotons expected from the annihilation of neutralinos in the galactic halo. The antiproton signal may offer an important alternative detection scheme in the...
Vacuum-Polarization Corrections to Solar-Fusion Rates (1993)
Kamionkowski, Marc, Bahcall, John N.
The vacuum-polarization corrections to rates for nuclear-fusion reactions in the $pp$ chain and in the CNO cycle are calculated. For the reactions of particular importance to the solar-neutrino...
The Rate of the Proton-Proton Reaction (1993)
Kamionkowski, Marc, Bahcall, John N.
We re-evaluate the matrix element for the proton-proton reaction which is important for stellar-evolution calculations and for the solar-neutrino problem. We self-consistently determine the effect of...
Instability and subsequent evolution of electroweak bubbles (1992)
Kamionkowski, Marc, Freese, Katherine
Bubbles in a first-order electroweak phase transition are nucleated with radii R0 and expand with velocity v. If v is subsonic, a bubble becomes unstable to nonspherical perturbations when its radius...
Kamionkowski, Marc, March-Russell, John
We make the simple observation that, because of global-symmetry-violating higher-dimension operators, as for instance might be expected to be induced by Planck-scale physics, textures are generically...
Instability and Subsequent Evolution of Electroweak Bubbles (1992)
Kamionkowski, Marc, Freese, Katherine
Bubbles in a first-order electroweak phase transition are nucleated with radii $R_0$ and expand with velocity $v$. If $v$ is subsonic, a bubble becomes unstable to non-spherical perturbations when...
Signatures of dark matter in underground detectors (1992)
Halzen, Francis, Stelzer, Tim, Kamionkowski, Marc
The neutralino, the lightest superpartner in many supersymmetric theories, is arguably the leading dark-matter candidate from both the cosmological and particle-physics points of view. Its mass is...
Planck-Scale Physics and the Peccei-Quinn Mechanism (1992)
Kamionkowski, Marc, March-Russell, John
Global-symmetry violating higher-dimension operators, expected to be induced by Planck-scale physics, in general drastically alter the properties of the axion field associated with the Peccei-Quinn...
Kamionkowski, Marc, March-Russell, John
We make the simple observation that, because of global symmetry violating higher-dimension operators expected to be induced by Planck-scale physics, textures are generically much too short-lived to...
Energetic neutrinos from heavy-neutralino annihilation in the Sun (1991)
Neutralinos may be captured in the Sun and annihilate therein producing high-energy neutrinos. Present limits on the flux of such neutrinos from underground detectors such as...
Distinctive positron feature from particle dark-matter annihilations in the galatic halo (1991)
Kamionkowski, Marc, Turner, Michael S.
If the dark matter in our galactic halo consists of weakly interacting massive particles (WIMP's) heavier than the W± boson which have a significant annihilation branch into W± and Z0 pairs, e.g.,...
Thermal relics: Do we know their abundances? (1990)
Kamionkowski, Marc, Turner, Michael S.
The relic abundance of a particle species that was once in thermal equilibrium in the expanding Universe depends upon a competition between the annihilation rate of the species and the expansion rate...
Supersymmetric dark matter above the W mass (1990)
Griest, Kim, Kamionkowski, Marc, Turner, Michael S.
In this paper we study the cosmological consequences of the minimal supersymmetric extension of the standard model in the case that the neutralino is heavier than the W. We calculate the cross...
Searching for CP violation in "charge-blind" jets (1990)
Although it is difficult to determine the identity of the parent parton of hadronic jets produced in high-energy particle-antiparticle collisions, ‘‘charge-blind’’ jets, those where such...
Unitarity limits on the mass and radius of dark-matter particles (1990)
Griest, Kim, Kamionkowski, Marc
Using partial-wave unitarity and the observed density of the Universe, we show that a stable elementary particle which was once in thermal equilibrium cannot have a mass greater than 340 TeV. An...
John Bahcall, Marc Kamionkowski
searchers (see, e.g., [5--7,3]) beginning with Bethe and Critchfield in 1938. All previous authors find values for the p + p ! d + e + + e cross section which agree with each other to within a few...