Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of ChicagoUS3.7k papers
- Centre National de la Recherche ScientifiqueFR2.9k papers
- The Ohio State UniversityUS2.8k papers
- University of Wisconsin–MadisonUS2.7k papers
- Institute for High Energy PhysicsES2.6k papers
- University of RochesterUS2.4k papers
- Princeton UniversityUS2.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.4k papers
- Texas A&M UniversityUS2.4k papers
- Massachusetts Institute of TechnologyUS2.4k papers
- University of MichiganUS2.3k papers
- Northwestern UniversityUS2.3k papers
69 papers · 2 filters
SDSS J0806+2006 and SDSS J1353+1138: Two New Gravitationally Lensed Quasars from the Sloan Digital Sky Survey
Naohisa Inada, Masamune Oguri, Robert H. Becker +18
We report the discoveries of two, two-image gravitationally lensed quasars selected from the Sloan Digital Sky Survey: SDSS J0806+2006 at z_s=1.540 and SDSS J1353+1138 at z_s=1.629…
What Can Gamma Ray Bursts Teach Us About Dark Energy?
Dan Hooper, Scott Dodelson
It has been suggested that Gamma Ray Bursts (GRB) may enable the expansion rate of our Universe to be measured out to very high redshifts ($z \gsim 5$) just as type Ia supernovae h…
The integrated bispectrum as a test of CMB non-Gaussianity: detection power and limits on f_NL with WMAP data
P. Cabella, F. K. Hansen, M. Liguori +4
We propose a fast and efficient bispectrum statistic for Cosmic Microwave Background (CMB) temperature anisotropies to constrain the amplitude of the primordial non-Gaussian signal…
A Survey of z>5.7 Quasars in the Sloan Digital Sky Survey IV: Discovery of Seven Additional Quasars
Xiaohui Fan, Michael A. Strauss, Gordon T. Richards +27
We present the discovery of seven quasars at z>5.7, selected from ~2000 deg^2 of multicolor imaging data of the Sloan Digital Sky Survey (SDSS). The new quasars have redshifts z fr…
Candidate Isolated Neutron Stars and Other Optically Blank X-ray Fields Identified from the ROSAT All-Sky and Sloan Digital Sky Surveys
Marcel A. Agueros, Scott F. Anderson, Bruce Margon +6
Only seven radio-quiet isolated neutron stars (INSs) emitting thermal X rays are known, a sample that has yet to definitively address such fundamental issues as the equation of sta…
Large-Scale Simulations of Reionization
Katharina Kohler, Nickolay Y. Gnedin, Andrew J. S. Hamilton
We use cosmological simulations to explore the large-scale effects of reionization. Since reionization is a process that involves a large dynamic range - from galaxies to rare brig…
Non-Gaussianity from Broken Symmetries
Edward W. Kolb, Antonio Riotto, Alberto Vallinotto
Recently we studied inflation models in which the inflaton potential is characterized by an underlying approximate global symmetry. In the first work we pointed out that in such a…
Comments on Long-Wavelength Backreaction and Dark Energy
E. W. Kolb, S. Matarrese, A. Riotto
In this brief note we comment on a recent attempt by Martineau and Brandenberger (astro-ph/0510523) to explain the acceleration of the Universe using the back-reaction of long-wave…
Learning from the Scatter in Type Ia Supernovae
Scott Dodelson, Alberto Vallinotto
Type Ia Supernovae are standard candles so their mean apparent magnitude has been exploited to learn about the redshift-distance relationship. Besides intrinsic scatter in this sta…
Comments on Backreaction and Cosmic Acceleration
E. W. Kolb, S. Matarrese, A. Riotto
In this brief WEB note we comment on recent papers related to our paper "On Acceleration Without Dark Energy".
Is cosmology compatible with sterile neutrinos?
Scott Dodelson, Alessandro Melchiorri, Anze Slosar
By combining data from cosmic microwave background (CMB) experiments (including the recent WMAP third year results), large scale structure (LSS) and Lyman-alpha forest observations…
Testing Gravity Against Early Time Integrated Sachs-Wolfe Effect
Pengjie Zhang
A generic prediction of general relativity is that the cosmological linear density growth factor is scale independent. But in general, modified gravities do not preserve this s…
SDSSJ103913.70+533029.7: A Super Star Cluster in the Outskirts of a Galaxy Merger
G. R. Knapp, C. A. Tremonti, C. M. Rockosi
We describe the serendipitous discovery in the spectroscopic data of the Sloan Digital Sky Survey of a star-like object, SDSSJ103913.70+533029.7, at a heliocentric radial velocity…
A search for the most massive galaxies: Double Trouble?
M. Bernardi, R. K. Sheth, R. C. Nichol +7
We describe the results of a search for galaxies with large (> 350 km/s) velocity dispersions. The largest systems we have found appear to be the extremes of the early-type galaxy…
Observational Constraints on Undulant Cosmologies
Gabriela Barenboim, Olga Mena Requejo, Chris Quigg
In an undulant universe, cosmic expansion is characterized by alternating periods of acceleration and deceleration. We examine cosmologies in which the dark-energy equation of stat…
Constraining Inverse Curvature Gravity with Supernovae
Olga Mena, Jose Santiago, Jochen Weller
We show that the current accelerated expansion of the Universe can be explained without resorting to dark energy. Models of generalized modified gravity, with inverse powers of the…
Virial masses and the baryon fraction in galaxies
H. Hoekstra, B. C. Hsieh, H. K. C. Yee +2
We have measured the weak lensing signal as a function of restframe luminosity for a sample of `isolated' galaxies. These results are based on four-band photometry from the Red-Seq…
The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
Mario Juric, Zeljko Ivezic, Alyson Brooks +23
Abridged: We estimate the distances to ~48 million stars detected by the Sloan Digital Sky Survey and map their 3D number density distribution in 100 < D < 20 kpc range over 6,500…
A Spectroscopic Study of the Ancient Milky Way: F- and G-Type Stars in the Third Data Release of the Sloan Digital Sky Survey
C. Allende Prieto, T. C. Beers, R. Wilhelm +4
(Abridged) We perform an analysis of spectra and photometry for 22,770 stars included in the third data release (DR3) of the SDSS. We measure radial velocities and, based on a mode…
A New Signature of Dark Matter Annihilations: Gamma-Rays from Intermediate-Mass Black Holes
Gianfranco Bertone, Andrew R. Zentner, Joseph Silk
We study the prospects for detecting gamma-rays from Dark Matter (DM) annihilations in enhancements of the DM density (mini-spikes) around intermediate-mass black holes with masses…
Spectral Decomposition of Broad-Line AGNs and Host Galaxies
Daniel E. Vanden Berk, Jiajian Shen, Ching-Wa Yip +7
Using an eigenspectrum decomposition technique, we separate the host galaxy from the broad line active galactic nucleus (AGN) in a set of 4666 spectra from the Sloan Digital Sky Su…
SDSSJ102111.02+491330.4: A Newly Discovered Gravitationally Lensed Quasar
Bart Pindor, Daniel J. Eisenstein, Michael D. Gregg +24
We report follow-up observations of two gravitational lens candidates identified in the Sloan Digital Sky Survey (SDSS) dataset. We have confirmed that SDSS J102111.02+491330.4 is…
Limits on spin-independent WIMP-nucleon interactions from the two-tower run of the Cryogenic Dark Matter Search
CDMS Collaboration
We report new results from the Cryogenic Dark Matter Search (CDMS II) at the Soudan Underground Laboratory. Two towers, each consisting of six detectors, were operated for 74.5 liv…
Testing Primordial Non-Gaussianity in CMB Anisotropies
M. Liguori, F. K. Hansen, E. Komatsu +2
Recent second-order perturbation computations have provided an accurate prediction for the primordial gravitational potential in scenarios in which cosmological perturbation…