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Correlation of CMB with large-scale structure. II. Weak lensing

Hirata, Christopher M. and Ho, Shirley and Padmanabhan, Nikhil and Seljak, Uroš and Bahcall, Neta A. (2008) Correlation of CMB with large-scale structure. II. Weak lensing. Physical Review D, 78 (4). Art. No. 043520. ISSN 0556-2821. http://resolver.caltech.edu/CaltechAUTHORS:HIRprd08c

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Abstract

We investigate the correlation of gravitational lensing of the cosmic microwave background (CMB) with several tracers of large-scale structure, including luminous red galaxies (LRGs), quasars, and radio Sources. The lensing field is reconstructed based on the CMB maps from the Wilkinson Microwave Anisotropy Probe (WMAP) satellite; the LRGs and quasars are observed by the Sloan Digital Sky Survey (SDSS); and the radio sources are observed in the NRAO VLA Sky Survey (NVSS). Combining all three large-scale Structure samples, we find evidence for a positive cross correlation at the 2.5 sigma level (1.8 sigma for the SDSS samples and 2.1 sigma for NVSS); the cross correlation amplitude is 1.06 +/- 0.42 times that expected for the WMAP cosmological parameters. Our analysis extends other recent analyses in that we carefully determine bias-weighted redshift distribution of the Sources. which is needed for a meaningful cosmological interpretation of the detected signal. We investigate contamination of the signal by galactic emission, extragalactic radio and infrared sources, thermal and kinetic Sunyaev-Zel'dovich effects, and the Rees-Sciama effect, and find all of them to be negligible.


Item Type:Article
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http://dx.doi.org/10.1103/PhysRevD.78.043520DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevD.78.043520PublisherUNSPECIFIED
Additional Information:© 2008 The American Physical Society. Received 16 February 2008; published 13 August 2008. We thank Sudeep Das, Doug Finkbeiner, Jim Gunn, Beth Reid, Kendrick Smith, David Spergel, and Oliver Zahn for useful discussions. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the participating institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS website is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the participating institutions. The participating institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, the University of Basel, the University of Cambridge, Case Western Reserve University, the University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck-Institute for Astronomy (MPIA), the Max-Planck-Institute for Astrophysics (MPA), New Mexico State University, Ohio State University, the University of Pittsburgh, the University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. The 2dF QSO Redshift Survey (2QZ) was compiled by the 2QZ survey team from observations made with the two-degree field on the Anglo-Australian Telescope. The 2dF-SDSS LRG and QSO (2SLAQ) Survey was compiled by the 2SLAQ team from SDSS data and observations made with the two-degree field on the Anglo-Australian Telescope. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis (LAMBDA). Support for LAMBDA is provided by the NASA Office of Space Science. Some of the results in this paper have been derived using the HEALPix [40] package. N.P. is supported by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under Contract No. NAS 5-26555. Part of this work was supported by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. U.S. is supported by the Packard Foundation and NSF CAREER-0132953.
Group:TAPIR
Funders:
Funding AgencyGrant Number
NASANAS 5-26555
Department of EnergyDE-AC02-05CH11231
David and Lucile Packard FoundationUNSPECIFIED
National Science FoundationCAREER-0132953
Subject Keywords:DIGITAL SKY SURVEY; MICROWAVE-ANISOTROPY-PROBE; INTEGRATED SACHS-WOLFE; SPECTROSCOPIC TARGET SELECTION; DARK ENERGY CONSTRAINTS; HUBBLE-SPACE-TELESCOPE; FLUX-LIMITED SAMPLE; DATA RELEASE; CROSS-CORRELATION; WMAP OBSERVATIONS
Record Number:CaltechAUTHORS:HIRprd08c
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HIRprd08c
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12466
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Dec 2008 01:13
Last Modified:26 Dec 2012 10:32

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