Journal Article

Linear theory and velocity correlations of clusters

Ravi K. Sheth and Idit Zehavi

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 394, issue 3, pages 1459-1462
Published in print April 2009 | ISSN: 0035-8711
Published online April 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.14326.x
Linear theory and velocity correlations of clusters

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Linear theory provides a reasonable description of the velocity correlations of biased tracers both perpendicular and parallel to the line of separation, provided one accounts for the fact that the measurement is almost always made using pair-weighted statistics. This introduces an additional term which, for sufficiently biased tracers, may be large. Previous work suggesting that linear theory was grossly in error for the components parallel to the line of separation ignored this term.

Keywords: galaxies: clusters: general; cosmology: observations; cosmology: theory; large-scale structure of Universe

Journal Article.  2356 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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