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Journal article
Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications
Physical review. D, Particles and fields, v 77(12), pp Giannantonio , T , Scranton , R , Crittenden , R , Nichol , B , Boughn , S , Myers , A & Richards , G 2008 , ' Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications ' , Physical Review D , vol. 77 , no. 12 , pp. 123520 . https://doi.org/10.1103/PhysRevD.77.123520-Giannantonio , T , Scranton , R , Crittenden , R , Nichol , B , Boughn , S , Myers , A & Richards , G 2008 , ' Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications ' , Physical Review D , vol. 77 , no. 12 , pp. 123520 . https://doi.org/10.1103/PhysRevD.77.123520
29 Jan 2008
Abstract
Phys.Rev.D77:123520,2008 We present a global measurement of the integrated Sachs-Wolfe (ISW) effect
obtained by cross-correlating all relevant large scale galaxy data sets with
the cosmic microwave background radiation map provided by the Wilkinson
Microwave Anisotropy Probe. With these measurements, the overall ISW signal is
detected at the ~ 4.5 sigma level. We also examine the cosmological
implications of these measurements, particularly the dark energy equation of
state w, its sound speed, and the overall curvature of the Universe. The flat
LCDM model is a good fit to the data and, assuming this model, we find that the
ISW data constrain Omega_m = 0.20 +0.19 -0.11 at the 95% confidence level. When
we combine our ISW results with the latest baryon oscillation and supernovae
measurements, we find that the result is still consistent with a flat LCDM
model with w = -1 out to redshifts z > 1.
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Details
- Title
- Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications
- Creators
- Tommaso Giannantonio - Institute of Cosmology and Gravitation, University of PortsmouthRyan Scranton - University of PittsburghRobert G Crittenden - Institute of Cosmology and Gravitation, University of PortsmouthRobert C Nichol - Institute of Cosmology and Gravitation, University of PortsmouthStephen P Boughn - Haverford CollegeAdam D Myers - University of Illinois Urbana-ChampaignGordon T Richards - Drexel University
- Publication Details
- Physical review. D, Particles and fields, v 77(12), pp Giannantonio , T , Scranton , R , Crittenden , R , Nichol , B , Boughn , S , Myers , A & Richards , G 2008 , ' Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications ' , Physical Review D , vol. 77 , no. 12 , pp. 123520 . https://doi.org/10.1103/PhysRevD.77.123520-Giannantonio , T , Scranton , R , Crittenden , R , Nichol , B , Boughn , S , Myers , A & Richards , G 2008 , ' Combined analysis of the integrated Sachs-Wolfe effect and cosmological implications ' , Physical Review D , vol. 77 , no. 12 , pp. 123520 . https://doi.org/10.1103/PhysRevD.77.123520
- Publisher
- Cold Spring Harbor Press
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000257290600039
- Scopus ID
- 2-s2.0-45549085860
- Other Identifier
- 991019169662504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics
- Physics, Particles & Fields