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Beyond the plane-parallel and Newtonian approach: wide-angle redshift distortions and convergence in general relativity

Bertacca, Daniele and Maartens, Roy and Raccanelli, Alvise and Clarkson, Chris (2012) Beyond the plane-parallel and Newtonian approach: wide-angle redshift distortions and convergence in general relativity. Journal of Cosmology and Astroparticle Physics, 2012 (10). Art. No. 025. ISSN 1475-7516. https://resolver.caltech.edu/CaltechAUTHORS:20130110-112624976

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Abstract

We extend previous analyses of wide-angle correlations in the galaxy power spectrum in redshift space to include all general relativistic effects. These general relativistic corrections to the standard approach become important on large scales and at high redshifts, and they lead to new terms in the wide-angle correlations. We show that in principle the new terms can produce corrections of nearly 10% on Gpc scales over the usual Newtonian approximation. General relativistic corrections will be important for future large-volume surveys such as SKA and Euclid, although the problem of cosmic variance will present a challenge in observing this.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/1475-7516/2012/10/025DOIUNSPECIFIED
http://iopscience.iop.org/1475-7516/2012/10/025/PublisherUNSPECIFIED
http://arxiv.org/abs/1205.5221arXivUNSPECIFIED
Additional Information:© 2012 Institute of Physics. Received June 4, 2012. Revised August 16, 2012. Accepted September 17, 2012. Published October 16, 2012. DB and RM are supported by the South African Square Kilometre Array Project. RM is supported by the STFC (U.K.) (grant no. ST/H002774/1). RM and CC are supported by the National Research Foundation (NRF, South Africa). DB, RM and CC are supported by a Royal Society (U.K.)/ NRF (S.A.) exchange grant. Part of the research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
Funders:
Funding AgencyGrant Number
STFC (UK)ST/H002774/1
Royal Society (UK)UNSPECIFIED
National Research Foundation (NRF) South AfricaUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
South African Square Kilometre Array ProjectUNSPECIFIED
Subject Keywords:gravity, cosmological parameters from LSS
Issue or Number:10
Classification Code:PACS: 98.62.Py, 04.20.-q
Record Number:CaltechAUTHORS:20130110-112624976
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130110-112624976
Official Citation:Beyond the plane-parallel and Newtonian approach: wide-angle redshift distortions and convergence in general relativity Daniele Bertacca et al JCAP10(2012)025
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:36303
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 Jan 2013 21:12
Last Modified:03 Oct 2019 04:36

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