Disks in the sky: A reassessment of the WMAP "cold spot" (2009)
We reassess the evidence that WMAP temperature maps contain a statistically significant "cold spot" by repeating the analysis using simple circular top-hat (disk) weights, as well as Gaussian weights...
Separating Dark Physics from Physical Darkness: Minimalist Modified Gravity vs. Dark Energy (2009)
The acceleration of the cosmic expansion may be due to a new component of physical energy density or a modification of physics itself. Mapping the expansion of cosmic scales and the growth of large...
Hiding dark energy transitions at low redshift (2009)
Mortonson, Michael J., Hu, Wayne, Huterer, Dragan
We show that it is both observationally allowable and theoretically possible to have large fluctuations in the dark energy equation of state as long as they occur at ultra-low redshifts z
Constraining Dark Energy with Clusters: Complementarity with Other Probes (2009)
Cunha, Carlos, Huterer, Dragan, Frieman, Joshua A.
The Figure of Merit Science Working Group (FoMSWG) recently forecast the constraints on dark energy that will be achieved prior to the Joint Dark Energy Mission (JDEM) by ground-based experiments...
Research Science and Education: The NSF's Astronomy and Astrophysics Postdoctoral Fellowship (2009)
Norman, Dara, Agueros, Marcel, Brown, Timothy M., Browning, Matthew, Chakrabarti, Sukanya, Cobb, Bethany, ...
The NSF's Astronomy and Astrophysics Postdoctoral Fellowship (AAPF) is exceptional among the available postdoctoral awards in Astronomy and Astrophysics. The fellowship is one of the few that allows...
Catastrophic photometric redshift errors: weak lensing survey requirements (2009)
Bernstein, Gary, Huterer, Dragan
We study the sensitivity of weak lensing surveys to the effects of catastrophic redshift errors - cases where the true redshift is misestimated by a significant amount. To compute the biases in...
Findings of the Joint Dark Energy Mission Figure of Merit Science Working Group (2009)
Albrecht, Andreas, Amendola, Luca, Bernstein, Gary, Clowe, Douglas, Eisenstein, Daniel, Guzzo, Luigi, ...
These are the findings of the Joint Dark Energy Mission (JDEM) Figure of Merit (FoM) Science Working Group (SWG), the FoMSWG. JDEM is a space mission planned by NASA and the DOE for launch in the...
Temperature and Polarization Spectra (2008)
Ω De, Wayne Hu, Dragan Huterer, Manoj Kaplinghat, Michael Mortonson, Yong-seon Song, ...
reionization TE gravitational waves 10 100 1000 l (multipole) EE BB gravitational lensing Lensing of CMB Fields Gravitational Lensing • Lensing is a surface brightness conserving remapping of...
Falsifying Paradigms for Cosmic Acceleration (2008)
Mortonson, Michael J., Hu, Wayne, Huterer, Dragan
Consistency relations between growth of structure and expansion history observables exist for any physical explanation of cosmic acceleration, be it a cosmological constant, scalar field...
No large-angle correlations on the non-Galactic microwave sky (2008)
Copi, Craig J., Huterer, Dragan, Schwarz, Dominik J., Starkman, Glenn D.
We investigate the angular two-point correlation function of temperature in the WMAP maps. Updating and extending earlier results, we confirm the lack of correlations outside the Galaxy on angular...
No evidence for the cold spot in the NVSS radio survey (2008)
Smith, Kendrick M., Huterer, Dragan
We revisit recent claims that there is a "cold spot" in both number counts and brightness of radio sources in the NVSS survey, with location coincident with the previously detected cold spot in WMAP....
Dark Energy and the Accelerating Universe (2008)
Frieman, Joshua, Turner, Michael, Huterer, Dragan
The discovery ten years ago that the expansion of the Universe is accelerating put in place the last major building block of the present cosmological model, in which the Universe is composed of 4%...
High-resolution temporal constraints on the dynamics of dark energy (2007)
Zhao, Gong-Bo, Huterer, Dragan, Zhang, Xinmin
We use the recent type Ia supernova, cosmic microwave background and large-scale structure data to shed light on the temporal evolution of the dark energy equation of state $w(z)$ out to redshift...
DISTANCES TO NEARBY GALAXIES: COMBINING FRAGMENTARY DATA USING FOUR DIFFERENT METHODS (2007)
Dragan Huterer, Dimitar D. Sasselov
The primary distance indicators are established in our Galaxy and the Local Group. There are at least four different methods which give good distances: methods using proper motions, RR Lyraes,...
Dalal, Neal, Doré, Olivier, Huterer, Dragan, Shirokov, Alexander
We study the effect of primordial nongaussianity on large-scale structure, focusing upon the most massive virialized objects. Using analytic arguments and N-body simulations, we calculate the mass...
Cosmic Acceleration, Dark Energy and Fundamental Physics (2007)
Turner, Michael S., Huterer, Dragan
A web of interlocking observations has established that the expansion of the Universe is speeding up and not slowing, revealing the presence of some form of repulsive gravity. Within the context of...
Dark Energy, A Cosmological Constant, and Type Ia Supernovae (2007)
Krauss, Lawrence M., Jones-Smith, Katherine, Huterer, Dragan
We focus on uncertainties in supernova measurements, in particular of individual magnitudes and redshifts, to review to what extent supernovae measurements of the expansion history of the universe...
Exploring the Dark Energy Redshift Desert with the Sandage-Loeb Test (2007)
Corasaniti, Pier-Stefano, Huterer, Dragan, Melchiorri, Alessandro
We study the prospects for constraining dark energy at very high redshift with the Sandage-Loeb (SL) test - a measurement of the evolution of cosmic redshift obtained by taking quasar spectra at...
Huterer, Dragan, Peiris, Hiranya V.
We perform a comprehensive study of a class of dark energy models - scalar field models where the effective potential can be described by a polynomial series - exploring their dynamical behavior...
Separating Dark Physics from Physical Darkness: Minimalist Modified Gravity vs. Dark Energy (2006)
Huterer, Dragan, Linder, Eric V.
The acceleration of the cosmic expansion may be due to a new component of physical energy density or a modification of physics itself. Mapping the expansion of cosmic scales and the growth of large...
Mysteries on Universe's Largest Observable Scales (2006)
We review recent findings that the universe on its largest scales shows hints of the violation of statistical isotropy, in particular alignment with the geometry and direction of motion of the solar...
Supernovae, Lensed CMB and Dark Energy (2006)
Hu, Wayne, Huterer, Dragan, Smith, Kendrick M.
Supernova distance and primary CMB anisotropy measurements provide powerful probes of the dark energy evolution in a flat universe but degrade substantially once curvature is marginalized. We show...
Copi, Craig J., Huterer, Dragan, Schwarz, Dominik J., Starkman, Glenn D.
The large-angle (low-ell) correlations of the Cosmic Microwave Background (CMB) as reported by the Wilkinson Microwave Anisotropy Probe (WMAP) after their first year of observations exhibited...
Wayne Hu, Dragan Huterer, Kendrick M. Smith
Supernova distance and primary CMB anisotropy measurements provide powerful probes of the dark energy evolution in a flat universe but degrade substantially once curvature is marginalized. We show...
Cosmology from supernova magnification maps (2005)
Cooray, Asantha, Holz, Daniel, Huterer, Dragan
High-z Type Ia supernovae are expected to be gravitationally lensed by the foreground distribution of large-scale structure. The resulting magnification of supernovae is statistically measurable, and...
Problems with Pencils: Lensing Covariance of Supernova Distance Measurements (2005)
Cooray, Asantha, Huterer, Dragan, Holz, Daniel
While luminosity distances from Type Ia supernovae (SNe) provide a powerful probe of cosmological parameters, the accuracy with which these distances can be measured is limited by cosmic...
Spontaneous Isotropy Breaking: A Mechanism for CMB Multipole Alignments (2005)
Gordon, Christopher, Hu, Wayne, Huterer, Dragan, Crawford, Tom
We introduce a class of models in which statistical isotropy is broken spontaneously in the CMB by a non-linear response to long-wavelength fluctuations in a mediating field. These fluctuations...
Effect of Photometric Redshift Uncertainties on Weak Lensing Tomography (2005)
Ma, Zhaoming, Hu, Wayne, Huterer, Dragan
We perform a systematic analysis of the effects of photometric redshift uncertainties on weak lensing tomography. We describe the photo-z distribution with a bias and Gaussian scatter that are...
Huterer, Dragan, Takada, Masahiro, Bernstein, Gary, Jain, Bhuvnesh
We study the impact of systematic errors on planned weak lensing surveys and compute the requirements on their contributions so that they are not a dominant source of the cosmological parameter error...
How many dark energy parameters? (2005)
Linder, Eric V., Huterer, Dragan
For exploring the physics behind the accelerating universe a crucial question is how much we can learn about the dynamics through next generation cosmological experiments. For example, in defining...
Nulling Tomography with Weak Gravitational Lensing (2005)
Huterer, Dragan, White, Martin
We explore several strategies of eliminating (or nulling) the small-scale information in weak lensing convergence power spectrum measurements in order to protect against undesirable effects, for...
Uncorrelated estimates of dark energy evolution (2005)
Huterer, Dragan, Cooray, Asantha
Type Ia supernova data have recently become strong enough to enable, for the first time, constraints on the time variation of the dark energy density and its equation of state. Most analyses,...
Zhaoming Ma, Wayne Hu, Dragan Huterer
We perform a general analysis of the effects of photometric redshift uncertainties on weak lensing tomography. We describe the photo-z distribution with a bias and Gaussian scatter that are allowed...
Calibrating the Nonlinear Matter Power Spectrum: Requirements for Future Weak Lensing Surveys (2004)
Huterer, Dragan, Takada, Masahiro
Uncertainties in predicting the nonlinear clustering of matter are among the most serious theoretical systematics facing the upcoming wide-field weak gravitational lensing surveys. We estimate the...
Distribution of Singularities in the Cosmic Microwave Background Polarization (2004)
Huterer, Dragan, Vachaspati, Tanmay
The polarization of the cosmic microwave background radiation will have a distribution of singularities and anti-singularities, points where the polarization vanishes for topological reasons. The...
Effects of Ellipticity and Shear on Gravitational Lens Statistics (2004)
Huterer, Dragan, Keeton, Chuck, Ma, Chung-Pei
We study the effects of ellipticity in lens galaxies and external tidal shear from neighboring objects on the statistics of strong gravitational lenses. For isothermal lens galaxies normalized so...
Uncorrelated Estimates of Dark Energy Evolution (2004)
Huterer, Dragan, Cooray, Asantha
Type Ia supernova data have recently become strong enough to enable, for the first time, constraints on the time variation of the dark energy density and its equation of state. Most analyses,...
Is the low-l microwave background cosmic? (2004)
Schwarz, Dominik J, Starkman, G D, Copi, Craig J, Huterer, Dragan
The examination of the cosmic microwave background (CMB) temperature anisotropies measured with the Wilkinson microwave anisotropy probe (WMAP) was discussed. It was found that the large-angle...
Is the low-l microwave background cosmic? (2004)
Schwarz, Dominik J., Starkman, Glenn D., Huterer, Dragan, Copi, Craig J.
The large-angle (low-l) correlations of the Cosmic Microwave Background exhibit several statistically significant anomalies compared to the standard inflationary big-bang model, however no connection...
Redshift Accuracy Requirements for Future Supernova and Number Count Surveys (2004)
Huterer, Dragan, Kim, Alex, Krauss, Lawrence M., Broderick, Tamara
We investigate the required redshift accuracy of type Ia supernova and cluster number-count surveys in order for the redshift uncertainties not to contribute appreciably to the dark energy parameter...
Growth rate of large-scale structure as a powerful probe of dark energy (2004)
Cooray, Asantha, Huterer, Dragan, Baumann, Daniel
he redshift evolution of the growth rate of the gravitational potential, d(D/a)/dz, is an excellent discriminator of dark energy parameters and, in principle, more powerful than standard classical...
Huterer, Dragan, Ma, Chung-Pei
Strong gravitational lensing is a useful probe of both the intrinsic properties of the lenses and the cosmological parameters of the universe. The large number of model parameters and small sample of...
Gravitational Lensing by Cosmic Strings in the Era of Wide-Field Surveys (2003)
Huterer, Dragan, Vachaspati, Tanmay
Motivated by the recent claim for gravitational lensing by a cosmic string, we reinvestigate the probability of finding such an event with upcoming wide-field surveys. If an observed lensing event is...
Growth Rate of Large Scale Structure as a Powerful Probe of Dark Energy (2003)
Cooray, Asantha, Huterer, Dragan, Baumann, Daniel
The redshift evolution of the growth rate of the gravitational potential, d(D/a)/dz, is an excellent discriminator of dark energy parameters and, in principle, more powerful than standard classical...
Davis, Adam N., Huterer, Dragan, Krauss, Lawrence M.
We use the statistics of strong gravitational lensing from the CLASS survey to impose constraints on the velocity dispersion and density profile of elliptical galaxies. This approach differs from...
Importance of Supernovae at z>1.5 to Probe Dark Energy (2002)
Linder, Eric V., Huterer, Dragan
The accelerating expansion of the universe suggests that an unknown component with strongly negative pressure, called dark energy, currently dominates the dynamics of the universe. Such a component...
Frieman, Joshua A., Huterer, Dragan, Linder, Eric V., Turner, Michael S.
A primary goal for cosmology and particle physics over the coming decade will be to unravel the nature of the dark energy that drives the accelerated expansion of the Universe. In particular,...
Parameterization of Dark-Energy Properties: a Principal-Component Approach (2002)
Huterer, Dragan, Starkman, Glenn
Considerable work has been devoted to the question of how to best parameterize the properties of dark energy, in particular its equation of state w. We argue that, in the absence of a compelling...
Weak Lensing as a Calibrator of the Cluster Mass-Temperature Relation (2002)
Huterer, Dragan, White, Martin
The abundance of clusters at the present epoch and weak gravitational lensing shear both constrain roughly the same combination of the power spectrum normalization sigma_8 and matter energy density...
Is the Universe Inflating? Dark Energy and the Future of the Universe (2002)
Huterer, Dragan, Starkman, Glenn D., Trodden, Mark
We consider the fate of the observable universe in the light of the discovery of a dark energy component to the cosmic energy budget. We extend results for a cosmological constant to a general dark...
Weak Lensing and Dark Energy (2001)
We study the power of upcoming weak lensing surveys to probe dark energy. Dark energy modifies the distance-redshift relation as well as the matter power spectrum, both of which affect the weak...
Measuring Angular Diameter Distances through Halo Clustering (2001)
Cooray, Asantha, Hu, Wayne, Huterer, Dragan, Joffre, Michael
Current and upcoming wide-field surveys for weak gravitational lensing and the Sunyaev-Zel'dovich effect will generate mass-selected catalogues of dark matter halos with internal or followup...
Constraining the Properties of Dark Energy (2001)
Huterer, Dragan, Turner, Michael S.
The presence of dark energy in the Universe is inferred directly from the accelerated expansion of the Universe, and indirectly, from measurements of cosmic microwave background (CMB) anisotropy....
Weak lensing and dark energy / (2001)
Thesis (Ph. D.)--University of Chicago, Dept. of Physics, August 2001.
Weak lensing and dark energy / (2001)
Thesis (Ph. D.)--University of Chicago, Dept. of Physics, August 2001.
Asantha Cooray, Wayne Hu, Dragan Huterer, Michael Joffre
Current and upcoming wide-field surveys for weak gravitational lensing and the Sunyaev-Zeldovich effect will generate mass-selected catalogs of dark matter halos with internal or follow-up...
Probing the dark energy: methods and strategies (2000)
Huterer, Dragan, Turner, Michael S.
The presence of dark energy in the Universe is inferred directly from the accelerated expansion of the Universe, and indirectly, from measurements of cosmic microwave background (CMB) anisotropy....
The Angular Power Spectrum of EDSGC Galaxies (2000)
Huterer, Dragan, Knox, Lloyd, Nichol, Robert C.
We determine the angular power spectrum, C_l, of the Edinburgh/Durham Southern Galaxy Catalog (EDSGC) and use this statistic to constrain cosmological parameters. Our methods for determining C_l, and...
Optimal Supernova Search Strategies (2000)
Huterer, Dragan, Turner, Michael S.
Recent use of Type Ia supernovae to measure acceleration of the universe has motivated questions regarding their optimal use to constrain cosmological parameters Omega_M, Omega_{\Lambda} and w_Q. In...
On the degree of scale invariance of inflationary perturbations (1999)
Huterer, Dragan, Turner, Michael S.
Many, if not most, inflationary models predict the power-law index of the spectrum of density perturbations is close to one, though not precisely equal to one, |n-1| \sim O(0.1), implying that the...
Gravitational Lensing as a Probe of Quintessence (1999)
Cooray, Asantha R., Huterer, Dragan
A large number of cosmological studies now suggest that roughly two-thirds of the critical energy density of the Universe exists in a component with negative pressure. If the equation of state of...
Prospects for probing the dark energy via supernova distance measurements (1998)
Huterer, Dragan, Turner, Michael S.
Distance measurements to Type Ia supernovae (SNe Ia) indicate that the Universe is accelerating and that two-thirds of the critical energy density exists in a dark-energy component with negative...
Simulation and analysis of some random matrix Eigenvalue distributions /--by Dragan Huterer. (1996)
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
Distances to Nearby Galaxies: Combining Fragmentary Data Using Four Different Methods (1995)
Huterer, Dragan, Sasselov, Dimitar D., Schechter, Paul L.
The primary distance indicators are established in our Galaxy and the Local Group. There are at least four different methods which give good distances: methods using proper motions, RR Lyraes,...