Solving the Corner-Turning Problem for Large Interferometers (2009)
Lutomirski, Andrew, Tegmark, Max, Sanchez, Nevada, Stein, Leo, Zaldarriaga, Matias
The so-called corner turning problem is a major bottleneck for radio telescopes with large numbers of antennae. The problem is essentially that of rapidly transposing a matrix that is too large to...
Omniscopes: Large Area Telescope Arrays with only N log N Computational Cost (2009)
Tegmark, Max, Zaldarriaga, Matias
We show that the class of antenna layouts for telescope arrays allowing cheap analysis hardware (with cost scaling as N log N rather than N^2 with the number of antennae N) is encouragingly large,...
An improved method for 21-cm foreground removal (2009)
Liu, Adrian, Tegmark, Max, Bowman, Judd, Hewitt, Jacqueline, Zaldarriaga, Matias
21-cm tomography is expected to be difficult in part because of serious foreground contamination. Previous studies have found that line-of-sight approaches are capable of cleaning foregrounds to an...
Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample (2009)
Percival, Will J., Reid, Beth A., Eisenstein, Daniel J., Bahcall, Neta A., Budavari, Tamas, Frieman, Joshua A., ...
The spectroscopic Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) galaxy sample represents the final set of galaxies observed using the original SDSS target selection criteria. We analyse the...
Reid, Beth A., Percival, Will J., Eisenstein, Daniel J., Verde, Licia, Spergel, David N., Skibba, Ramin A., ...
We present the power spectrum of the reconstructed halo density field derived from a sample of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey Seventh Data Release (DR7). The halo...
The Seventh Data Release of the Sloan Digital Sky Survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes...
Everett's Many-Worlds Interpretation of quantum mechanics is discussed in the context of other physics disputes and other proposed kinds of parallel universes. We find that only a small fraction of...
The Multiverse Hierarchy (2009)
I survey physics theories involving parallel universes, arguing that they form a natural four-level hierarchy of multiverses allowing progressively greater diversity. Level I: A generic prediction of...
The Second Law and Cosmology (2009)
I use cosmology examples to illustrate that the second law of thermodynamics is not old and tired, but alive and kicking, continuing to stimulate interesting research on really big puzzles. The...
An Improved Method for 21cm Foreground Removal (2009)
Liu, Adrian, Tegmark, Max, Bowman, Judd, Hewitt, Jacqueline, Zaldarriaga, Matias
21 cm tomography is expected to be difficult in part because of serious foreground contamination. Previous studies have found that line-of-sight approaches are capable of cleaning foregrounds to an...
Likely values of the Higgs vev (2009)
Donoghue, John F., Dutta, Koushik, Ross, Andreas, Tegmark, Max
We make an estimate of the likelihood function for the Higgs vacuum expectation value by imposing anthropic constraints on the existence of atoms while allowing the other parameters of the Standard...
Observing the Evolution of the Universe (2009)
Aguirre, James, Amblard, Alexandre, Ashoorioon, Amjad, Baccigalupi, Carlo, Balbi, Amedeo, Bartlett, James, ...
How did the universe evolve? The fine angular scale (l>1000) temperature and polarization anisotropies in the CMB are a Rosetta stone for understanding the evolution of the universe. Through detailed...
Cosmology from the Highly-Redshifted 21 cm Line (2009)
Furlanetto, Steven, Lidz, Adam, Loeb, Abraham, McQuinn, Matthew, Pritchard, Jonathan, Shapiro, Paul, ...
One of the next decade's most exciting prospects is to explore the cosmic "dark ages," during which the first stars in the Universe formed, with the 21 cm line of neutral hydrogen. At z>6, this light...
Astrophysics from the Highly-Redshifted 21 cm Line (2009)
Furlanetto, Steven, Lidz, Adam, Loeb, Abraham, McQuinn, Matthew, Pritchard, Jonathan, Aguirre, James, ...
The cosmic dark ages and the epoch of reionization, during which the first generations of stars and galaxies formed, are among the most compelling frontiers of extragalactic astrophysics and...
The seventh data release of the sloan digital sky survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
Will point sources spoil 21 cm tomography? (2008)
Liu, Adrian, Tegmark, Max, Zaldarriaga, Matias
21 cm tomography is emerging as a promising probe of the cosmological dark ages and the epoch of reionization, as well as a tool for observational cosmology in general. However, serious sources of...
Axion Cosmology and the Energy Scale of Inflation (2008)
Hertzberg, Mark P, Tegmark, Max, Wilczek, Frank
We survey observational constraints on the parameter space of inflation and axions and map out two allowed windows: the classic window and the inflationary anthropic window. The cosmology of the...
The Fast Fourier Transform Telescope (2008)
Tegmark, Max, Zaldarriaga, Matias
We propose an all-digital telescope for 21 cm tomography, which combines key advantages of both single dishes and interferometers. The electric field is digitized by antennas on a rectangular grid,...
Was Einstein wrong? This paper provides a detailed technical review of Einstein's special and general relativity from an astrophysical perspective, including the historical development of the...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Prieto, Carlos Allende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
How accurately can 21 cm tomography constrain cosmology? (2008)
Mao, Yi, Tegmark, Max, McQuinn, Matthew, Zaldarriaga, Matias, Zahn, Oliver
There is growing interest in using 3-dimensional neutral hydrogen mapping with the redshifted 21 cm line as a cosmological probe, as it has been argued to have a greater long-term potential than the...
A model of diffuse Galactic Radio Emission from 10 MHz to 100 GHz (2008)
Tegmark, Max, Gaensler, B. M., Jonas, Justin, Landecker, T. L., Reich, Patricia
Understanding diffuse Galactic radio emission is interesting both in its own right and for minimizing foreground contamination of cosmological measurements. Cosmic Microwave Background experiments...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the sloan digital sky survey (2008)
Adelman-McCarthy, Jennifer K., Agüros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, Anderson, Kurt S. J., Anderson, Scott F., ...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
Methods for Rapidly Processing Angular Masks of Next-Generation Galaxy Surveys (2007)
Swanson, Molly E. C., Tegmark, Max, Hamilton, Andrew J. S., Hill, J. Colin
As galaxy surveys become larger and more complex, keeping track of the completeness, magnitude limit, and other survey parameters as a function of direction on the sky becomes an increasingly...
Real-Space Cosmic Fields From Redshift-Space Distributions: A Green Function Approach (2007)
We present a new method for reconstructing the cosmological density, peculiar velocity and peculiar gravitational potential on large scales from redshift data. We remove the distorting effects of...
Cosmological Parameter Estimation from the CMB (2007)
Andy Taylor, Bill Ballinger, Max Tegmark
this paper. The modes are optimised for fi, and only the best 320 modes are used. We see that the conditional error in the fi direction is not much worse than the full set, but the likelihood...
Departments of Astronomy and Physics, and (2007)
One still cannot conclusively assert that the universe underwent a neutral phase, despite the new COBE FIRAS limit y! 2:5 \Theta 10 \Gamma5 on Compton y-distortions of the cosmic microwave...
THE ANGULAR POWER SPECTRUM OF THE 4 YEAR COBE DATA (2007)
The angular power spectrum C ` is extracted from the 4 year COBE DMR data with a 20 ffi galactic cut, using the narrowest window functions possible. The average power in eight multipole bands is also...
Early photoionization of the intergalactic medium is discussed in a nearly model-independent way, in order to investigate whether early structures corresponding to rare Gaussian peaks in a CDM model...
Max Tegmark, Fohringer Ring, Harold S. Shapiro
We study the behavior of infinite systems of coupled harmonic oscillators as the time t! 1, and generalize the Central Limit Theorem (CLT) to show that their reduced Wigner distributions become...
A BRUTE FORCE ANALYSIS OF THE COBE DMR DATA 1 (2007)
Max Tegmark, Fohringer Ring, Emory F. Bunn
More than a dozen papers analyzing the COBE data have now appeared. We review the different techniques and compare them to a "brute force " likelihood analysis where we invert the...
We present a Wiener filtered map of the Cosmic Microwave Background (CMB) fluctuations in a disk with 15 ffi diameter, centered at the North Celestial Pole. The map is based on the 1993-1995 data...
STEADY STATES OF HARMONIC OSCILLATOR CHAINS AND SHORTCOMINGS OF HARMONIC HEAT BATHS y (2007)
We study properties of steady states (states with time-independent density operators) of systems of coupled harmonic oscillators. Formulas are derived showing how adiabatic change of the Hamiltonian...
Max Tegmark, Joseph Silk, Martin J. Rees, Alain Blanchard, Francesco Palla, Fohringer Ring, ...
The minimum mass that a virialized gas cloud must have in order to be able to cool in a Hubble time is computed, using a detailed treatment of the chemistry of molecular hydrogen. With a simple model...
Inflationary Constraints on Type IIA String Theory (2007)
Hertzberg, Mark P., Kachru, Shamit, Taylor, Washington, Tegmark, Max
We prove that inflation is forbidden in the most well understood class of semi-realistic type IIA string compactifications: Calabi-Yau compactifications with only standard NS-NS 3-form flux, R-R...
I advocate an extreme "shut-up-and-calculate" approach to physics, where our external physical reality is assumed to be purely mathematical. This brief essay motivates this "it's all just equations"...
Searching for Inflation in Simple String Theory Models: An Astrophysical Perspective (2007)
Hertzberg, Mark P., Tegmark, Max, Kachru, Shamit, Shelton, Jessie, Ozcan, Onur
Attempts to connect string theory with astrophysical observation are hampered by a jargon barrier, where an intimidating profusion of orientifolds, Kahler potentials, etc. dissuades cosmologists from...
Many lives in many worlds (2007)
I argue that accepting quantum mechanics to be universally true means that you should also believe in parallel universes. I give my assessment of Everett's theory as it celebrates its 50th...
The Mathematical Universe (2007)
I explore physics implications of the External Reality Hypothesis (ERH) that there exists an external physical reality completely independent of us humans. I argue that with a sufficiently broad...
SDSS Galaxy Clustering: Luminosity & Colour Dependence and Stochasticity (2007)
Swanson, Molly E. C., Tegmark, Max, Blanton, Michael, Zehavi, Idit
Differences in clustering properties between galaxy subpopulations complicate the cosmological interpretation of the galaxy power spectrum, but can also provide insights about the physics underlying...
The fifth data release of the sloan digital sky survey (2007)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fifth data release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The fifth data release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
Constraining f(R) Gravity as a Scalar Tensor Theory (2006)
Faulkner, Thomas, Tegmark, Max, Bunn, Emory F., Mao, Yi
We search for viable f(R) theories of gravity, making use of the equivalence between such theories and scalar-tensor gravity. We find that models can be made consistent with solar system constraints...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
Cosmological constraints from the SDSS Luminous Red Galaxies (2006)
Tegmark, Max, Eisenstein, Daniel, Strauss, Michael, Weinberg, David, Blanton, Michael, Frieman, Joshua, ...
Also archived in: arXiv:astro-ph/0608632 v2 Oct 30 2006
Limits on f_NL parameters from WMAP 3yr data (2006)
Creminelli, Paolo, Senatore, Leonardo, Zaldarriaga, Matias, Tegmark, Max
We analyze the 3-year WMAP data and look for a deviation from Gaussianity in the form of a 3-point function that has either of the two theoretically motivated shapes: local and equilateral. There is...
The shape of the SDSS DR5 galaxy power spectrum (2006)
Percival, Will J., Nichol, Robert C., Eisenstein, Daniel J., Frieman, Joshua A., Fukugita, Masataka, Loveday, Jon, ...
We present a Fourier analysis of the clustering of galaxies in the combined Main galaxy and Luminous Red Galaxy (LRG) Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) sample. The aim of our...
Constraining Torsion with Gravity Probe B (2006)
Mao, Yi, Tegmark, Max, Guth, Alan, Cabi, Serkan
It is well-entrenched folklore that torsion gravity theories predict observationally negligible torsion in the solar system, since torsion (if it exists) couples only to the intrinsic spin of...
Task Force on Cosmic Microwave Background Research (2006)
Bock, James, Church, Sarah, Devlin, Mark, Hinshaw, Gary, Lange, Andrew, Lee, Adrian, ...
One of the most spectacular scientific breakthroughs in past decades was using measurements of the fluctuations in the cosmic microwave background (CMB) to test precisely our understanding of the...
CMB multipole measurements in the presence of foregrounds (2006)
Most analysis of Cosmic Microwave Background spherical harmonic coefficients a_lm has focused on estimating the power spectrum C_l= rather than the coefficients themselves. We present a...
The fourth data release of the sloan digital sky survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fourth data release of the sloan digital sky survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fourth data release of the sloan digital sky survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
Cosmological constraints from the SDSS luminous red galaxies (2006)
Tegmark, Max, Eisenstein, Daniel J., Strauss, Michael A., Weinberg, David H., Blanton, Michael R., Frieman, Joshua A., ...
We measure the large-scale real-space power spectrum P(k) using luminous red galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS) and use this measurement to sharpen constraints on cosmological...
How unlikely is a doomsday catastrophe? (2005)
Numerous Earth-destroying doomsday scenarios have recently been analyzed, including breakdown of a metastable vacuum state and planetary destruction triggered by a "strangelet'' or microscopic black...
Dimensionless constants, cosmology and other dark matters (2005)
Tegmark, Max, Aguirre, Anthony, Rees, Martin J, Wilczek, Frank
We identify 31 dimensionless physical constants required by particle physics and cosmology, and emphasize that both microphysical constraints and selection effects might help elucidate their origin....
Eisenstein, Daniel, Zehavi, Idit, Hogg, David, Scoccimarro, Roman, Blanton, Michael, Nichol, Robert, ...
Also archived in: arXiv:astro-ph/0501171 v1 10 Jan 2005
Eisenstein, Daniel, Zehavi, Idit, Hogg, David, Scoccimarro, Roman, Blanton, Michael, Nichol, Robert, ...
Also archived in: arXiv:astro-ph/0501171 v1 10 Jan 2005
On Math, Matter and Mind (2005)
Hut, Piet, Alford, Mark, Tegmark, Max
We discuss the nature of reality in the ontological context of Penrose's math-matter-mind triangle. The triangle suggests the circularity of the widespread view that math arises from the mind, the...
Limits on non-Gaussianities from WMAP data (2005)
Creminelli, Paolo, Nicolis, Alberto, Senatore, Leonardo, Tegmark, Max, Zaldarriaga, Matias
We develop a method to constrain the level of non-Gaussianity of density perturbations when the 3-point function is of the "equilateral" type. Departures from Gaussianity of this form are produced by...
How did it all begin? Although this question has undoubtedly lingered for as long as humans have walked the Earth, the answer still eludes us. Yet since my grandparents were born, scientists have...
Crotts, Arlin, Garnavich, Peter, Priedhorsky, William, Habib, Salman, Heitmann, Katrin, Wang, Yun, ...
JEDI will probe dark energy in three independent ways by measuring the expansion history of the universe: (1) using type Ia supernovae as cosmological standard candles over a range of distances, (2)...
Cosmological neutrino bounds for non-cosmologists (2005)
I briefly review cosmological bounds on neutrino masses and the underlying gravitational physics at a level appropriate for readers outside the field of cosmology. For the case of three massive...
Uncorrelated Measurements of the Cosmic Expansion History and Dark Energy from Supernovae (2005)
We present a method for measuring the cosmic expansion history H(z) in uncorrelated redshift bins, and apply it to current and simulated type Ia supernova data assuming spatial flatness. If the...
Twenty-one centimeter tomography with foregrounds (2005)
Wang, Xiaomin, Tegmark, Max, Santos, Mario, Knox, Lloyd
Twenty-one centimeter tomography is emerging as a powerful tool to explore the end of the cosmic dark ages and the reionization epoch, but it will only be as good as our ability to accurately model...
The third data release of the sloan digital sky survey (2005)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The Third Data Release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The third data release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...
The third data release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...
Eisenstein, Daniel J., Zehavi, Idit, Hogg, David W., Scoccimarro, Roman, Blanton, Michael R., Nichol, Robert C., ...
Abstract not available.
Eisenstein, Daniel J., Zehavi, Idit, Hogg, David W., Scoccimarro, Roman, Blanton, Michael R., Nichol, Robert C., ...
Abstract not available.
The third data release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...
Eisenstein, Daniel J., Zehavi, Idit, Hogg, David W., Scoccimarro, Roman, Blanton, Michael R., Nichol, Robert C., ...
Abstract not available.
The Intermediate-Scale Clustering of Luminous Red Galaxies (2004)
Zehavi, Idit, Eisenstein, Daniel J., Nichol, Robert C., Blanton, Michael R., Hogg, David W., Brinkmann, Jon, ...
We report the intermediate-scale (0.3 to 40 Mpc/h) clustering of 35,000 luminous early-type galaxies at redshifts 0.16 to 0.44 from the Sloan Digital Sky Survey. We present the redshift-space...
What does inflation really predict? (2004)
If the inflaton potential has multiple minima, as may be expected in, e.g., the string theory "landscape", inflation predicts a probability distribution for the cosmological parameters describing...
NYU-VAGC: a galaxy catalog based on new public surveys (2004)
Blanton, Michael R., Schlegel, David J., Strauss, Michael A., Brinkmann, J., Finkbeiner, Douglas, Fukugita, Masataka, ...
Here we present the New York University Value-Added Galaxy Catalog (NYU-VAGC), a catalog of local galaxies (mostly below a redshift of about 0.3) based on a set of publicly-released surveys...
Multiple universes, cosmic coincidences, and other dark matters (2004)
Aguirre, Anthony, Tegmark, Max
Even when completely and consistently formulated, a fundamental theory of physics and cosmological boundary conditions may not give unambiguous and unique predictions for the universe we observe;...
Abazajian, Kevork, Zheng, Zheng, Zehavi, Idit, Weinberg, David H., Frieman, Joshua A., Berlind, Andreas A., ...
We use the projected correlation function w_p(r_p) of a volume-limited subsample of the Sloan Digital Sky Survey (SDSS) main galaxy redshift catalogue to measure the halo occupation distribution...
How accurately can suborbital experiments measure the CMB? (2004)
Tegmark, Max, Devlin, Mark, Page, Lyman, Miller, Amber, Netterfield, Barth, ...
Great efforts are currently being channeled into ground- and balloon-based CMB experiments, mainly to explore anisotropy on small angular scales and polarization. To optimize instrumental design and...
Anthropic predictions for vacuum energy and neutrino masses (2004)
Pogosian, Levon, Vilenkin, Alexander, Tegmark, Max
It is argued that the observed vacuum energy density and the small values of the neutrino masses could be due to anthropic selection effects. Until now, these two quantities have been treated...
New dark energy constraints from supernovae, microwave background and galaxy clustering (2004)
Using the spectacular new high redshift supernova observations from the HST/GOODS program and previous supernova, CMB and galaxy clustering data, we make the most accurate measurements to date of the...
Cosmological Parameters from Eigenmode Analysis of Sloan Digital Sky Survey Galaxy Redshifts (2004)
Pope, Adrian C., Matsubara, Takahiko, Szalay, Alexander S., Blanton, Michael R., Eisenstein, Daniel J., Gray, Jim, ...
We present estimates of cosmological parameters from the application of the Karhunen-Loeve transform to the analysis of the 3D power spectrum of density fluctuations using Sloan Digital Sky Survey...
The Second Data Release of the Sloan Digital sky survey (2004)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
Padmanabhan, Nikhil, Schlegel, David J., Carr, Michael A., Gunn, James E., Rockosi, Constance M., ...
On departures from a power law in the galaxy correlation function (2004)
Zehavi, Idit, Weinberg, David H., Zheng, Zheng, Berlind, Andreas A., Frieman, Joshua A., Scoccimarro, Román, ...
The Second Data Release of the Sloan Digital sky survey (2004)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
Finkbeiner, Douglas P., Padmanabhan, Nikhil, Schlegel, David J., Carr, Michael A., Gunn, James E., Rockosi, Constance M., ...
The Sloan Digital Sky Survey (SDSS) mosaic camera and telescope have obtained five-band optical-wavelength imaging near the Galactic plane outside of the nominal survey boundaries. These additional...
The second data release of the Sloan Digital Sky Survey (2004)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg(2) of five-band (ugriz) imaging data with photometry for...
The second data release of the Sloan Digital Sky Survey (2004)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg(2) of five-band (ugriz) imaging data with photometry for...
The Quest for Microwave Foreground X (2003)
Tegmark, Max, Davies, R. D., Gutierrez, Carlos M., Lasenby, A. N., Rebolo, R., ...
The WMAP team has produced a foreground map that can account for most of the low-frequency Galactic microwave emission in the WMAP maps, tentatively interpreting it as synchrotron emission....
CMBfit: Rapid WMAP likelihood calculations with normal parameters (2003)
Sandvik, Havard B., Tegmark, Max, Wang, Xiaomin, Zaldarriaga, Matias
We present a method for ultra-fast confrontation of the WMAP cosmic microwave background observations with theoretical models, implemented as a publicly available software package called CMBfit,...
Gott III, J. Richard, Juric, Mario, Schlegel, David, Hoyle, Fiona, Vogeley, Michael, Tegmark, Max, ...
We have produced a new conformal map of the universe illustrating recent discoveries, ranging from Kuiper belt objects in the Solar system, to the galaxies and quasars from the Sloan Digital Sky...
Gott III, J. Richard, Jurić, Mario, Schlegel, David, Hoyle, Fiona, Vogeley, Michael, Tegmark, Max, ...
We have produced a new conformal map of the universe illustrating recent discoveries, ranging from Kuiper belt objects in the Solar system, to the galaxies and quasars from the Sloan Digital Sky...
The significance of the largest scale CMB fluctuations in WMAP (2003)
Tegmark, Max, Zaldarriaga, Matias, Hamilton, Andrew
We investigate anomalies reported in the Cosmic Microwave Background maps from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite on very large angular scales and discuss possible...
A scheme to deal accurately and efficiently with complex angular masks in galaxy surveys (2003)
Hamilton, A. J. S., Tegmark, Max
This paper presents a scheme to deal accurately and efficiently with complex angular masks, such as occur typically in galaxy surveys. An angular mask is taken to be an arbitrary union of arbitrarily...
Budavari, Tamas, Connolly, Andrew J., Szalay, Alexander S., Szapudi, Istvan, Csabai, Istvan, Scranton, Ryan, ...
Understanding the clustering of galaxies has long been a goal of modern observational cosmology. Utilizing our photometric redshift technique a volume limited sample containing more than 2 million...
The Large-Scale Polarization of the Microwave Foreground (2003)
Tegmark, Max, O'Dell, Christopher, Keating, Brian, Timbie, Peter, Efstathiou, George, ...
Most of the useful information about inflationary gravitational waves and reionization is on large angular scales where Galactic foreground contamination is the worst, so a key challenge is to model,...
Anthropic predictions for neutrino masses (2003)
Tegmark, Max, Vilenkin, Alexander, Pogosian, Levon
It is argued that small values of the neutrino masses may be due to anthropic selection effects. If this is the case, then the combined mass of the three neutrino species is expected to be ~1eV,...
A high resolution foreground cleaned CMB map from WMAP (2003)
Tegmark, Max, Hamilton, Andrew
We perform an independent foreground analysis of the WMAP maps to produce a cleaned CMB map (available online) useful for cross-correlation with, e.g., galaxy and X-ray maps. We use a variant of the...
I survey physics theories involving parallel universes, which form a natural four-level hierarchy of multiverses allowing progressively greater diversity. Level I: A generic prediction of inflation...
On Departures From a Power Law in the Galaxy Correlation Function (2003)
Zehavi, Idit, Weinberg, David H., Zheng, Zheng, Berlind, Andreas A., Frieman, Joshua A., Scoccimarro, Roman, ...
We measure the projected correlation function w_p(r_p) from the Sloan Digital Sky Survey for a flux-limited sample of 118,000 galaxies and for a volume limited subset of 22,000 galaxies with absolute...
The first data release of the sloan digital sky survey (2003)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The first data release of the sloan digital sky survey (2003)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The first data release of the Sloan Digital Sky Survey (2003)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...
The first data release of the Sloan Digital Sky Survey (2003)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...
Cosmology from Large Scale Structure (2002)
Hamilton, Andrew, Gnedin, Nick, Tegmark, Max, Xu, Yongzhong
We report on the linear matter power spectrum reconstructed from the Lyman alpha forest, on baryonic wiggles in the galaxy power spectrum, and on how to measure real space (as opposed to redshift...
The last stand before MAP: cosmological parameters from lensing, CMB and galaxy clustering (2002)
Wang, Xiaomin, Tegmark, Max, Jain, Bhuvnesh, Zaldarriaga, Matias
Cosmic shear measurements have now improved to the point where they deserve to be treated on par with CMB and galaxy clustering data for cosmological parameter analysis, using the full measured...
The large-scale polarization of the microwave background and foreground (2002)
Tegmark, Max, O'Dell, Chris, Keating, Brian, Timbie, Peter, Efstathiou, George, ...
The DASI discovery of CMB polarization has opened a new chapter in cosmology. Most of the useful information about inflationary gravitational waves and reionization is on large angular scales where...
CMB Polarization at Large Angular Scales: Data Analysis of the POLAR Experiment (2002)
O'Dell, Christopher W., Keating, Brian G., Tegmark, Max, Timbie, Peter T.
The coming flood of CMB polarization experiments, spurred by the recent detection of CMB polarization by DASI and WMAP, will be confronted by many new analysis tasks specific to polarization. For the...
The end of unified dark matter? (2002)
Sandvik, Havard, Tegmark, Max, Zaldarriaga, Matias, Waga, Ioav
Despite the interest in dark matter and dark energy, it has never been shown that they are in fact two separate substances. We provide the first strong evidence that they are separate by ruling out a...
The Galaxy Luminosity Function and Luminosity Density at Redshift z=0.1 (2002)
Blanton, Michael R., Hogg, David W., Brinkmann, J., Connolly, Andrew J., Csabai, Istvan, Bahcall, Neta A., ...
Using a catalog of 147,986 galaxy redshifts and fluxes from the Sloan Digital Sky Survey (SDSS) we measure the galaxy luminosity density at z=0.1 in five optical bandpasses corresponding to the SDSS...
E/B decomposition of finite pixelized CMB maps (2002)
Bunn, Emory F., Zaldarriaga, Matias, Tegmark, Max
Separation of the E and B components of a microwave background polarization map or a weak lensing map is an essential step in extracting science from it, but when the map covers only part of the sky...
Measuring spacetime: from big bang to black holes (2002)
Nerd abstract: Observational constraints on spacetime are reviewed, focusing on how the underlying physics (dark matter, dark energy, gravity) can be tested rather than assumed. Popular abstract:...
Tegmark, Max, Zaldarriaga, Matias
We present a method for measuring the cosmic matter budget without assumptions about speculative Early Universe physics, and for measuring the primordial power spectrum P*(k) non-parametrically,...
Two-Dimensional Topology of the Sloan Digital Sky Survey (2002)
Hoyle, Fiona, Vogeley, Michael S., Gott III, J. Richard, Blanton, Michael, Tegmark, Max, Weinberg, David H., ...
We present the topology of a volume-limited sample of 11,884 galaxies, selected from an apparent-magnitude limited sample of over 100,000 galaxies observed as part of the Sloan Digital Sky Survey...
First attempt at measuring the CMB cross-polarization (2002)
Tegmark, Max, Zaldarriaga, Matias, Barkats, Denis, Gundersen, Josh O., Hedman, Matt M., ...
We compute upper limits on CMB cross-polarization by cross-correlating the PIQUE and Saskatoon experiments. We also discuss theoretical and practical issues relevant to measuring cross-polarization...
The power spectrum of galaxies in the 2dF 100k redshift survey (2001)
Tegmark, Max, Hamilton, Andrew J. S., Xu, Yongzhong
We compute the real-space power spectrum and the redshift-space distortions of galaxies in the 2dF 100k galaxy redshift survey using pseudo-Karhunen-Loeve eigenmodes and the stochastic bias...
Collaboration, SDSS, Scranton, Ryan, Johnston, David, Dodelson, Scott, Frieman, Joshua A., Connolly, Andy, ...
The angular distribution of galaxies encodes a wealth of information about large scale structure. Ultimately, the Sloan Digital Sky Survey (SDSS) will record the angular positions of order 10^8...
The Angular Correlation Function of Galaxies from Early SDSS Data (2001)
Collaboration, SDSS, Connolly, Andrew, Scranton, Ryan, Johnston, David, Dodelson, Scott, Eisenstein, Daniel, ...
The Sloan Digital Sky Survey is one of the first multicolor photometric and spectroscopic surveys designed to measure the statistical properties of galaxies within the local Universe. In this Letter...
The Angular Power Spectrum of Galaxies from Early SDSS Data (2001)
Collaboration, SDSS, Tegmark, Max, Dodelson, Scott, Eisenstein, Daniel, Narayanan, Vijay, Scoccimarro, Roman, ...
We compute the angular power spectrum C_l from 1.5 million galaxies in early SDSS data on large angular scales, l
Collaboration, SDSS, Szalay, Alexander S., Jain, Bhuvnesh, Matsubara, Takahiko, Scranton, Ryan, Vogeley, Michael S., ...
We present measurements of parameters of the 3-dimensional power spectrum of galaxy clustering from 222 square degrees of early imaging data in the Sloan Digital Sky Survey. The projected galaxy...
The 3D Power Spectrum from Angular Clustering of Galaxies in Early SDSS Data (2001)
Dodelson, Scott, Narayanan, Vijay K., Tegmark, Max, Scranton, Ryan, Budavari, Tamas, Connolly, Andrew, ...
Early photometric data from the Sloan Digital Sky Survey (SDSS) contain angular positions for 1.5 million galaxies. In companion papers, the angular correlation function $w(\theta)$ and 2D power...
Morphological Measures of nonGaussianity in CMB Maps (2001)
Shandarin, Sergei F., Feldman, Hume A., Xu, Yongzhong, Tegmark, Max
We discuss the tests of nonGaussianity in CMB maps using morphological statistics known as Minkowski functionals. As an example we test degree-scale cosmic microwave background (CMB) anisotropy for...
A Limit on the Large Angular Scale Polarization of the Cosmic Microwave Background (2001)
Keating, Brian G., O'Dell, Christopher W., Klawikowski, Slade, Stebor, Nate, Piccirillo, Lucio, ...
We present an upper limit on the polarization of the Cosmic Microwave Background at 7 degree angular scales in the frequency band between 26 and 36 GHz, produced by the POLAR experiment. The campaign...
Is cosmology consistent? (2001)
Wang, Xiaomin, Tegmark, Max, Zaldarriaga, Matias
We perform a detailed analysis of the latest CMB measurements (including BOOMERaNG, DASI, Maxima and CBI), both alone and jointly with other cosmological data sets involving, e.g., galaxy clustering...
The CMB power spectrum at l=30-200 from QMASK (2001)
We measure the cosmic microwave background (CMB) power spectrum on angular scales l~30-200 (1-6 degrees) from the QMASK map, which combines the data from the QMAP and Saskatoon experiments. Since the...
Gaussianity of Degree-Scale Cosmic Microwave Background Anisotropy Observations (2001)
Park, Chan-Gyung, Park, Changbom, Ratra, Bharat, Tegmark, Max
We present results from a first test of the Gaussianity of degree-scale cosmic microwave background (CMB) anisotropy. We investigate Gaussianity of the CMB anisotropy by studying the topology of CMB...
We argue for a ``parametrized post-Friedmanian'' approach to linear cosmology, where the history of expansion and perturbation growth is measured without assuming that the Einstein Field Equations...
100 Years of the Quantum (2001)
Tegmark, Max, Wheeler, John Archibald
As quantum theory celebrates its 100th birthday, spectacular successes are mixed with outstanding puzzles and promises of new technologies. This article reviews both the successes of quantum theory...
How to measure CMB polarization power spectra without losing information (2000)
We present a method for measuring CMB polarization power spectra given incomplete sky coverage and test it with simulated examples such as Boomerang 2001 and MAP. By augmenting the quadratic...
Constraints from the Lyman alpha forest power spectrum (2000)
Zaldarriaga, Matias, Hui, Lam, Tegmark, Max
We use published measurements of the transmission power spectrum of the Lyman alpha forest to constrain several parameters that describe cosmology and thermal properties of the intergalactic medium...
Comparing and combining the Saskatoon, QMAP and COBE CMB maps (2000)
Xu, Yongzhong, Tegmark, Max, Devlin, Mark J., Herbig, Thomas, Miller, Amber D., ...
We present a method for comparing and combining maps with different resolutions and beam shapes, and apply it to the Saskatoon, QMAP and COBE/DMR data sets. Although the Saskatoon and QMAP maps...
A New Spin on Galactic Dust (2000)
Tegmark, Max, Finkbeiner, Douglas P., Davies, R. D., Gutierrez, Carlos M., Haffner, L. M., ...
We present a new puzzle involving Galactic microwave emission and attempt to resolve it. On one hand, a cross-correlation analysis of the WHAM H-alpha map with the Tenerife 10 and 15 GHz maps shows...
The Real Space Power Spectrum of the PSCz Survey from 0.01 to 300 h/Mpc (2000)
Hamilton, Andrew J. S., Tegmark, Max
We report a measurement of the real space (not redshift space) power spectrum of galaxies over four and a half decades of wavenumber, 0.01 to 300 h/Mpc, from the IRAS Point Source Catalog Redshift...
Why is the Fraction of Four-Image Radio Lens Systems So High? (2000)
We investigate the frequency of two- and four-image gravitational lens systems in the Jodrell-VLA Astrometric Survey (JVAS) and Cosmic Lens All-Sky Survey (CLASS), and the possible implications for...
Latest cosmological constraints on the densities of hot and cold dark matter (2000)
Tegmark, Max, Zaldarriaga, Matias, Hamilton, Andrew J. S.
As experimentalists step up their pursuit of cold dark matter particles and neutrino masses, cosmological constraints are tightening. We compute the joint constraints on 11 cosmological parameters...
Tegmark, Max, Zaldarriaga, Matias, Hamilton, Andrew J. S.
We present a method for calculating large numbers of power spectra C_l and P(k) that accelerates CMBfast by a factor around 10^3 without appreciable loss of accuracy, then apply it to constrain 11...
CMB Observables and Their Cosmological Implications (2000)
Hu, Wayne, Fukugita, Masataka, Zaldarriaga, Matias, Tegmark, Max
We show that recent measurements of the power spectrum of cosmic microwave background anisotropies by BOOMERanG and MAXIMA can be characterized by four observables, the position of the first acoustic...
New CMB constraints on the cosmic matter budget: trouble for nucleosynthesis? (2000)
Tegmark, Max, Zaldarriaga, Matias
We compute the joint constraints on ten cosmological parameters from the latest CMB measurements. The lack of a significant second acoustic peak in the latest Boomerang and Maxima data favors models...
Linear Redshift Distortions and Power in the PSCz Survey (2000)
Hamilton, A. J. S., Tegmark, Max, Padmanabhan, Nikhil
We present a state-of-the-art linear redshift distortion analysis of the recently published IRAS Point Source Catalog Redshift Survey (PSCz). The procedure involves linear compression into 4096...
Galactic contamination in the QMAP experiment (2000)
Tegmark, Max, Devlin, Mark J., Haffner, L. M., Herbig, Tom, Miller, Amber D., ...
We quantify the level of foreground contamination in the QMAP Cosmic Microwave Background (CMB) data with two objectives: (a) measuring the level to which the QMAP power spectrum measurements need to...
Cooray, Asantha, Hu, Wayne, Tegmark, Max
We study the prospects for extracting detailed statistical properties of the Sunyaev-Zel'dovich (SZ) effect associated with large scale structure using upcoming multifrequency CMB experiments. The...
Current cosmological constraints from a 10 parameter CMB analysis (2000)
Tegmark, Max, Zaldarriaga, Matias
We compute the constraints on a ``standard'' 10 parameter cold dark matter (CDM) model from the most recent CMB and data and other observations, exploring 30 million discrete models and two...
Wayne Hu, Masataka Fukugita, Matias Zaldarriaga, Max Tegmark
We show that recent measurements of the power spectrum of cosmic microwave background anisotropies by Boomerang and MAXIMA can be mainly characterized by four observables: the position of the Ðrst...
Asantha Cooray, Wayne Hu, Max Tegmark
We study the prospects for extracting detailed statistical properties of the Sunyaev-Zeldovich (SZ) e†ect associated with large-scale structure using upcoming multifrequency cosmic microwave...
The power spectrum of the CfA/SSRS UZC galaxy redshift survey (1999)
Padmanabhan, Nikhil, Tegmark, Max, Hamilton, Andrew J. S.
The combined CfA2/SSRS redshift catalog has recently been improved and made public. We compute the redshift-space power spectrum of this catalog using the regions at -2.5 < delta < 50 north (8h <...
The importance of quantum decoherence in brain processes (1999)
Based on a calculation of neural decoherence rates, we argue that that the degrees of freedom of the human brain that relate to cognitive processes should be thought of as a classical rather than...
Foregrounds and Forecasts for the Cosmic Microwave Background (1999)
Tegmark, Max, Eisenstein, Daniel J., Hu, Wayne
One of the main challenges facing upcoming CMB experiments will be to distinguish the cosmological signal from foreground contamination. We present a comprehensive treatment of this problem and study...
Decorrelating the Power Spectrum of Galaxies (1999)
Hamilton, A. J. S., Tegmark, Max
It is shown how to decorrelate the (prewhitened) power spectrum measured from a galaxy survey into a set of high resolution uncorrelated band-powers. The treatment includes nonlinearity, but not...
Cross-correlation of Tenerife data with Galactic templates - evidence for spinning dust? (1999)
Tegmark, Max, Gutierrez, Carlos M., Jones, Aled W., Davies, R. D., Lasenby, A. N., ...
The recent discovery of dust-correlated diffuse microwave emission has prompted two rival explanations: free-free emission and spinning dust grains. We present new detections of this component at 10...
Is the cosmic microwave background really non-Gaussian? (1999)
Bromley, Benjamin C., Tegmark, Max
Two recent papers have claimed detection of non-Gaussian features in the COBE DMR sky maps of the cosmic microwave background. We confirm these results, but argue that Gaussianity is still not...
Time Evolution of Galaxy Formation and Bias in Cosmological Simulations (1999)
Blanton, Michael, Cen, Renyue, Ostriker, Jeremiah P., Strauss, Michael A., Tegmark, Max
The clustering of galaxies relative to the mass distribution declines with time because: first, nonlinear peaks become less rare events; second, the densest regions stop forming new galaxies because...
Observational evidence for stochastic biasing (1999)
Bromley, Benjamin C., Tegmark, Max
We show that the galaxy density in the Las Campanas Redshift Survey cannot be perfectly correlated with the underlying mass distribution since various galaxy subpopulations are not perfectly...
Max Tegmark, Daniel J. Eisenstein, Wayne Hu
One of the main challenges facing upcoming cosmic microwave background (CMB) experiments will be to distinguish the cosmological signal from foreground contamination. We present a comprehensive...
Weak lensing of galaxies by large-scale structure can potentially measure cosmological quantities as accurately as the cosmic microwave background (CMB). However, the relation between observables and...
Observational evidence for stochastic biasing (1999)
Bromley, Benjamin C., Tegmark, Max
We show that the galaxy density in the Las Campanas Redshift Survey cannot be perfectly correlated with the underlying mass distribution since various galaxy subpopulations are not perfectly...
Is the cosmic microwave background really non-gaussian? (1999)
Bromley, Benjamin C., Tegmark, Max
Two recent papers have claimed detection of non-Gaussian features in the COBE Differential Microwave Radiometer sky maps of the cosmic microwave background. We confirm these results, but argue that...
Is the cosmic microwave background really non-gaussian? (1999)
Bromley, Benjamin C., Tegmark, Max
Two recent papers have claimed detection of non-Gaussian features in the COBE Differential Microwave Radiometer sky maps of the cosmic microwave background. We confirm these results, but argue that...
Weak Lensing: Prospects for Measuring Cosmological Parameters (1998)
Weak lensing of galaxies by large scale structure can potentially measure cosmological quantities as accurately as the cosmic microwave background (CMB). However, the relation between observables and...
The Three-Dimensional Power Spectrum Of Galaxies from the Sloan Digital Sky Survey (1998)
Tegmark, Max, Blanton, Michael R., Strauss, Michael A., Hennessy, Greg, Munn, Jeffrey A.
We measure the large-scale real-space power spectrum P(k) by using a sample of 205,443 galaxies from the Sloan Digital Sky Survey, covering 2417 effective square degrees with mean redshift z = 0.1....
Observational evidence for stochastic biasing (1998)
Tegmark, Max, Bromley, Benjamin C.
We show that the galaxy density in the Las Campanas Redshift Survey (LCRS) cannot be perfectly correlated with the underlying mass distribution since various galaxy subpopulations are not perfectly...
Cosmological constraints from current CMB and SN 1a data: a brute force 8 parameter analysis (1998)
We describe constraints on a ``standard'' 8 parameter open cold dark matter (CDM) model from the most recent CMB and SN1a data. Our parameters are the densities of CDM, baryons, vacuum energy and...
It is becoming increasingly clear that galaxy bias is complicated, with evidence indicating that it can be time-dependent, morphology-dependent, scale-dependent, non-linear and non-deterministic. We...
Comparing and combining CMB datasets (1998)
One of the best ways of spotting previously undetected systematic errors in CMB experiments is to compare two independent observations of the same region. We derive a set of tools for comparing and...
Mapping the CMB I: the first flight of the QMAP experiment (1998)
Devlin, Mark, Herbig, Tom, Miller, Amber, Netterfield, Barth, Page, Lyman, ...
We report on the first flight of the balloon-borne QMAP experiment. The experiment is designed to make a map of the cosmic microwave background anisotropy on angular scales from 0.7 to several...
Mapping the CMB II: the second flight of the QMAP experiment (1998)
Herbig, Tom, Devlin, Mark, Miller, Amber, Page, Lyman, Tegmark, Max
We report the results from the second flight of QMAP, an experiment to map the cosmic microwave background near the North Celestial Pole. We present maps of the sky at 31 and 42 GHz as well as a...
Mapping the CMB III: combined analysis of QMAP flights (1998)
Devlin, Mark, Herbig, Tom, Miller, Amber, Netterfield, Barth, Page, Lyman, ...
We present results from the QMAP balloon experiment, which maps the Cosmic Microwave Background (CMB) and probes its angular power spectrum on degree scales. In two separate flights, data were taken...
Galactic emission at 19 GHz (1998)
Tegmark, Max, Page, Lyman, Boughn, Steven
We cross-correlate a 19 GHz full sky Cosmic Microwave Background (CMB) survey with other maps to quantify the foreground contribution. Correlations are detected with the Diffuse Infrared Background...
Cosmic Complementarity: Joint Parameter Estimation from CMB Experiments and Redshift Surveys (1998)
Eisenstein, Daniel J., Hu, Wayne, Tegmark, Max
We study the ability of future CMB anisotropy experiments and redshift surveys to constrain a thirteen-dimensional parameterization of the adiabatic cold dark matter model. Each alone is unable to...
Observationally Determining the Properties of Dark Matter (1998)
Hu, Wayne, Eisenstein, Daniel J., Tegmark, Max, White, Martin
Determining the properties of the dark components of the universe remains one of the outstanding challenges in cosmology. We explore how upcoming CMB anisotropy measurements, galaxy power spectrum...
Cosmic Complementarity: H_0 and Omega_m from Combining CMB Experiments and Redshift Surveys (1998)
Eisenstein, Daniel J., Hu, Wayne, Tegmark, Max
We show that upcoming CMB satellite experiments and large redshift surveys can be used together to yield 5% determinations of H_0 and Omega_m, an order of magnitude improvement over CMB data alone....
Cosmic complementarity: probing the acceleration of the Universe (1998)
Tegmark, Max, Eisenstein, Daniel J., Hu, Wayne, Kron, Richard
We assess the accuracy with which Omega and Lambda can be measured by combining various types of upcoming experiments. Useful expressions for the Fisher information matrix are derived for classical...
Cosmic complementarity: combining CMB and supernova observations (1998)
Tegmark, Max, Eisenstein, Daniel J., Hu, Wayne
We compute the accuracy with which Omega and Lambda can be measured by combining future SN Ia and CMB experiments, deriving a handy expression for the SN Ia Fisher information matrix. The two data...
The time-evolution of bias (1998)
Tegmark, Max, Peebles, P. J. E.
We study the evolution of the bias factor b and the mass-galaxy correlation coefficient r in a simple analytic model for galaxy formation and the gravitational growth of clustering. The model shows...
Removing point sources from CMB maps (1998)
For high-precision cosmic microwave background (CMB) experiments, contamination from extragalactic point sources is a major concern. It is therefore useful to be able to detect and discard point...
Max Tegmark, Daniel J. Eisenstein, Wayne Hu, Richard G. Kron
We assess the accuracy with which Ωm and ΩΛ can be measured by combining various types of upcoming experiments. Useful expressions for the Fisher information matrix are derived for classical...
Measuring The Galaxy Power Spectrum With Future Redshift Surveys (1998)
Max Tegmark, Michael A. Strauss, Michael S. Vogeley, Alexander S. Szalay
Precision measurements of the galaxy power spectrum P (k) require a data analysis pipeline that is both fast enough to be computationally feasible and accurate enough to take full advantage of...
Weighing Neutrinos with Galaxy Surveys (1997)
Hu, Wayne, Eisenstein, Daniel J., Tegmark, Max
We show that galaxy redshift surveys sensitively probe the neutrino mass, with eV mass neutrinos suppressing power by a factor of two. The Sloan Digital Sky Survey can potentially detect $N$ nearly...
Removing real-world foregrounds from CMB maps (1997)
Most work on foreground removal has treated the case where the frequency dependence of all components is perfectly known and independent of position. In contrast, real-world foregrounds are generally...
Cosmic microwave background maps from the HACME experiment (1997)
Tegmark, Max, Staren, John, Meinhold, Peter, Lubin, Philip, Childers, Jeffrey, ...
We present Cosmic Microwave Background (CMB) maps from the Santa Barbara HACME balloon experiment (Staren etal 2000), covering about 1150 square degrees split between two regions in the northern sky,...
The Interpretation of Quantum Mechanics: Many Worlds or Many Words? (1997)
As cutting-edge experiments display ever more extreme forms of non-classical behavior, the prevailing view on the interpretation of quantum mechanics appears to be gradually changing. A (highly...
Why is the CMB fluctuation level 10^{-5}? (1997)
We explore the qualitative changes that would occur if the amplitude Q ~ 10^{-5} of cosmological density fluctuations were different. If is less than about 10^{-6}, the cosmological objects that form...
Measuring the galaxy power spectrum with future redshift surveys (1997)
Tegmark, Max, Hamilton, Andrew, Strauss, Michael, Vogeley, Michael, Szalay, Alexander
Precision measurements of the galaxy power spectrum P(k) require a data analysis pipeline that is both fast enough to be computationally feasible and accurate enough to take full advantage of...
Analyzing redshift surveys to measure the power spectrum on large scales (1997)
Upcoming large redshift surveys potentially allow precision measurements of the galaxy power spectrum. To accurately measure P(k) on the largest scales, comparable to the depth of the survey, it is...
Cosmological Parameter Estimation from the CMB (1997)
Taylor, Andy, Heavens, Alan, Ballinger, Bill, Tegmark, Max
We discuss the problems of applying Maximum Likelihood methods to the CMB and how one can make it both efficient and optimal. The solution is a generalised eigenvalue problem that allows virtually no...
Measuring cosmological parameters with galaxy surveys (1997)
We assess the accuracy with which future galaxy surveys can measure cosmological parameters by deriving a handy approximation that we validate numerically. We find that galaxy surveys are quite...
CMB mapping experiments: a designer's guide (1997)
We apply state-of-the art data analysis methods to a number of fictitious CMB mapping experiments, including 1/f noise, distilling the cosmological information from time-ordered data to maps to power...
Is ``the theory of everything'' merely the ultimate ensemble theory? (1997)
We discuss some physical consequences of what might be called ``the ultimate ensemble theory'', where not only worlds corresponding to say different sets of initial data or different physical...
On the dimensionality of spacetime (1997)
Some superstring theories have more than one effective low-energy limit, corresponding to classical spacetimes with different dimensionalities. We argue that all but the 3+1-dimensional one might...
Forecasting Cosmic Parameter Errors from Microwave Background Anisotropy Experiments (1997)
Bond, J. Richard, Efstathiou, George, Tegmark, Max
Accurate measurements of the cosmic microwave background (CMB) anisotropies with an angular resolution of a few arcminutes can be used to determine fundamental cosmological parameters such as the...
Uncorrelated measurements of the CMB power spectrum (1997)
Tegmark, Max, Hamilton, Andrew
We describe how to compute estimates of the power spectrum C_l from Cosmic Microwave Background (CMB) maps that not only retain all the cosmological information, but also have uncorrelated error bars...
Karhunen-loeve eigenvalue problems in cosmology: How should we tackle large data sets (1997)
Max Tegmark, Andy N. Taylor, Alan F. Heavens, Fohringer Ring
Submitted to ApJ. Available from h t t p://www.mpa-garching.mpg.de/~max/karhunen.html (faster from Europe) and from h t t p://www.sns.ias.edu/~max/karhunen.html (faster from the US).
Uncorrelated Measurements Of The Cmb Power Spectrum (1997)
defined by c j M \Gamma1 y (2) will be uncorrelated, since h c c t i \Gamma h cih c t i = I. h ci = M t c, so the new window function matrix will be M t . However, whereas the window functions of the...
How to measure CMB power spectra without losing information (1996)
A new method for estimating the angular power spectrum C_l from cosmic microwave background (CMB) maps is presented, which has the following desirable properties: (1) It is unbeatable in the sense...
How to make maps from CMB data without losing information (1996)
The next generation of CMB experiments can measure cosmological parameters with unprecedented accuracy - in principle. To achieve this in practice when faced with such gigantic data sets, elaborate...
An icosahedron-based method for pixelizing the celestial sphere (1996)
For power spectrum estimation it's important that the pixelization of a CMB sky map be smooth and regular to high degree. With this criterion in mind the ``COBE sky cube" was defined. This paper has...
Is lensing of point sources a problem for future CMB experiments? (1996)
Weak gravitational lensing from large-scale structure enhances and reduces the fluxes from extragalactic point sources with an rms amplitude of order 15%. In cosmic microwave background (CMB)...
A high-resolution map of the cosmic microwave background around the north celestial pole (1996)
Tegmark, Max, Devlin, Marc, Netterfield, Barth, Page, Lyman, Wollack, Ed
We present a Wiener filtered map of the Cosmic Microwave Background (CMB) fluctuations in a disk with 15 degree diameter, centered at the North Celestial Pole. The map is based on the 1993-1995 data...
Measuring quantum states: an experimental setup for measuring the spatial density matrix (1996)
To quantify the effect of decoherence in quantum measurements, it is desirable to measure not merely the square modulus of the spatial wavefunction, but the entire density matrix, whose phases carry...
Does the universe in fact contain almost no information? (1996)
At first sight, an accurate description of the state of the universe appears to require a mind-bogglingly large and perhaps even infinite amount of information, even if we restrict our attention to a...
Karhunen-Loeve eigenvalue problems in cosmology: how should we tackle large data sets? (1996)
Tegmark, Max, Taylor, Andy, Heavens, Alan
Since cosmology is no longer "the data-starved science", the problem of how to best analyze large data sets has recently received considerable attention, and Karhunen-Loeve eigenvalue methods have...
How small were the first cosmological objects? (1996)
Tegmark, Max, Silk, Joseph, Rees, Martin, Blanchard, Alain, Abel, Tom, Palla, Francesco
The minimum mass that a virialized gas cloud must have in order to be able to cool in a Hubble time is computed, using a detailed treatment of the chemistry of molecular hydrogen. With a simple model...
Spherical Harmonic Analysis of the Angular Distribution of Gamma-Ray Bursts (1996)
Tegmark, Max, Hartmann, Dieter, Briggs, Michael, Meegan, Charles
We compute the angular power spectrum C_l of the BATSE 3B catalog, and find no evidence for clustering on any scale. These constraints bridge the entire range from small scales, probing source...
The angular power spectrum of the 4 year COBE data (1996)
The angular power spectrum C_l is extracted from the 4 year COBE DMR data with a 20 degree galactic cut, using the narrowest window functions possible. The average power in eight multipole bands is...
Doppler peaks and all that: CMB anisotropies and what they can tell us (1995)
The power spectrum of fluctuations in the cosmic microwave background (CMB) depends on most of the key cosmological parameters. Accurate future measurements of this power spectrum might therefore...
Improved limits on gamma ray burst repetition (1995)
Tegmark, Max, Hartmann, Dieter, Briggs, Michael, Hakkila, Jon, Meegan, Charles
We tighten previous upper limits on gamma ray burst repetition by analyzing the angular power spectrum of the BATSE 3B catalog of 1122 bursts. At 95% confidence, we find that no more than 2% of all...
The Angular Power Spectrum of BATSE 3B Gamma-Ray Burst (1995)
Tegmark, Max, Hartmann, Dieter, Briggs, Michael, Meegan, Charles
We compute the angular power spectrum C_l from the BATSE 3B catalog of 1122 gamma-ray bursts, and find no evidence for clustering on any scale. These constraints bridge the entire range from small...
Haehnelt, Martin G., Tegmark, Max
We have investigated the possibility of inferring peculiar velocities for clusters of galaxies from the Doppler shift of scattered cosmic microwave background (CMB) photons. We find that if the core...
A method for subtracting foregrounds from multi-frequency CMB sky maps (1995)
Tegmark, Max, Efstathiou, George
An improved method for subtracting contaminants from Cosmic Microwave Background (CMB) sky maps is presented, and used to estimate how well future experiments will be able to recover the primordial...
ESTIMATING MICROWAVE POWER SPECTRA (1995)
A new method for estimating the power spectrum $C_l$ from cosmic microwave background (CMB) maps was recently presented by the author and applied to the 2 year COBE data. It was found that the...
A method for extracting maximum resolution power spectra from galaxy surveys (1995)
The power spectrum estimated from a galaxy redshift survey is the real spectrum convolved with a window function, so when estimating the power on very large scales (for small k), it is important that...
Probes of the Early Universe (1994)
One of the main challenges in cosmology is to quantify how small density fluctuations at the recombination epoch z around 1000 evolved into the galaxies and the large-scale structure we observe in...
A method for extracting maximum resolution power spectra from microwave sky maps (1994)
A method for extracting maximal resolution power spectra from microwave sky maps is presented and applied to the 2 year COBE data, yielding a power spectrum that is consistent with a standard n=1,...
A brute force analysis of the COBE DMR data (1994)
More than a dozen papers analyzing the COBE data have now appeared. We review the different techniques and compare them to a ``brute force" likelihood analysis where we invert the full 4038 x 4038...
Real-space cosmic fields from redshift-space distributions: a Green function approach (1994)
Tegmark, Max, Bromley, Benjamin
We present a new method for reconstructing the cosmological density, peculiar velocity and peculiar gravitational potential on large scales from redshift data. We remove the distorting effects of...
We generalize previous work on early photoionization to CDM models with Omega
Decoherence produces coherent states: an explicit proof for harmonic chains (1994)
Tegmark, Max, Shapiro, Harold S.
We study the behavior of infinite systems of coupled harmonic oscillators as t->infinity, and generalize the Central Limit Theorem (CLT) to show that their reduced Wigner distributions become...
Steady states of harmonic oscillator chains and shortcomings of harmonic heat baths (1994)
We study properties of steady states (states with time-independent density operators) of systems of coupled harmonic oscillators. Formulas are derived showing how adiabatic change of the Hamiltonian...
Power Spectrum Independent Constraints on Cosmological Models (1993)
Tegmark, Max, Bunn, Emory, Hu, Wayne
A formalism is presented that allows cosmological experiments to be tested for consistency, and allows a simple frequentist interpretation of the resulting significance levels. As an example of an...
Apparent wave function collapse caused by scattering (1993)
Some experimental implications of the recent progress on wave function collapse are calculated. Exact results are derived for the center-of-mass wave function collapse caused by random scatterings...
Tegmark, Max, Silk, Joseph, Blanchard, Alain
Early photoionization of the intergalactic medium is discussed in a nearly model-independent way, in order to investigate whether early structures corresponding to rare Gaussian peaks in a CDM model...
Did the universe recombine? New spectral constraints on reheating (1993)
One still cannot conclusively assert that the universe underwent a neutral phase, despite the new COBE FIRAS limit y
Late reionization by supernova-driven winds (1993)
Tegmark, Max, Silk, Joseph, Evrard, August
A model is presented in which supernova-driven winds from early galaxies reionize the intergalactic medium by z=5. This scenario can explain the observed absence of a Gunn-Peterson trough in the...
Apparent Wave Function Collapse Caused by Scattering (1993)
Some experimental implications of the recent progress on wave function collapse are calculated. Exact results are derived for the center-of-mass wave function collapse caused by random scatterings...
Degeneracy of the Peak Locations (1000)
Daniel Eisenstein, Max Tegmark, Matias Zaldarriaga, W. Hu
Measures dark energy smoothness Cosmic variance • CMB lensing Reconstruct large-scale potential Cross correlate with CMB Test dark energy particle properties