Journal Article

Non-perturbative effects of geometry in wide-angle redshift distortions

Péter Pápai and István Szapudi

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 389, issue 1, pages 292-296
Published in print September 2008 | ISSN: 0035-8711
Published online August 2008 | e-ISSN: 1365-2966 | DOI:
Non-perturbative effects of geometry in wide-angle redshift distortions

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We use the formalism of Szapudi to derive full explicit expressions for the linear two-point correlation function, including redshift-space distortions and large angle effects. We take into account a non-perturbative geometric term in the Jacobian, which is still linear in terms of the dynamics. This term had been identified previously, but has been neglected in all subsequent explicit calculations of the linear redshift-space two-point correlation function. Our results represent a significant correction to previous explicit expressions and are in excellent agreement with our measurements in the Hubble volume simulation.

Keywords: methods: analytical; large-scale structure of Universe

Journal Article.  2710 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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