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The non-linear redshift space probability distribution function in models with local primordial non-Gaussianity


Lam, T Y; Desjacques, V; Sheth, R K (2010). The non-linear redshift space probability distribution function in models with local primordial non-Gaussianity. Monthly Notices of the Royal Astronomical Society, 402(4):2397-2402.

Abstract

We use the ellipsoidal collapse approximation to investigate the non-linear redshift space evolution of the density field with primordial non-Gaussianity of the local fnl-type. We utilize the joint distribution of eigenvalues of the initial non-Gaussian shear field and evaluate the evolved redshift space probability distribution function (PDF). It is shown that, similar to the real space analysis, the underdense tail of the non-linear redshift space PDF differs significantly from that for Gaussian initial conditions. We also derive the lowest order correction of the Kaiser's formula in the presence of a non-zero fnl.

Abstract

We use the ellipsoidal collapse approximation to investigate the non-linear redshift space evolution of the density field with primordial non-Gaussianity of the local fnl-type. We utilize the joint distribution of eigenvalues of the initial non-Gaussian shear field and evaluate the evolved redshift space probability distribution function (PDF). It is shown that, similar to the real space analysis, the underdense tail of the non-linear redshift space PDF differs significantly from that for Gaussian initial conditions. We also derive the lowest order correction of the Kaiser's formula in the presence of a non-zero fnl.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Astronomy and Astrophysics
Physical Sciences > Space and Planetary Science
Language:English
Date:March 2010
Deposited On:02 Mar 2011 15:49
Last Modified:14 Jul 2024 03:31
Publisher:Wiley-Blackwell
ISSN:0035-8711
Additional Information:The attached file is a preprint (accepted version) of an article published in Monthly Notices of the Royal Astronomical Society, 402(4):2397-2402.
OA Status:Green
Publisher DOI:https://doi.org/10.1111/j.1365-2966.2009.15903.x
Related URLs:http://arxiv.org/abs/0908.2285v2
  • Content: Accepted Version
  • Language: English
  • Description: Accepted manuscript, Version 2
  • Content: Accepted Version
  • Language: English
  • Description: Accepted manuscript, Version 1
  • Content: Published Version
  • Language: English
  • Description: Nationallizenz 142-005