On the Statistical Analyses of the Cosmic Velocity Field

Details On the Statistical Analyses of the Cosmic Velocity Field On the Statistical Analyses of the Cosmic Velocity Field

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...520..409s&link_type=abstract

The Astrophysical Journal, Volume 520, Issue 2, pp. 409-412.

Astronomy and Astrophysics

Astronomy

2

Cosmology: Theory, Galaxies: Distances And Redshifts, Cosmology: Large-Scale Structure Of Universe

Scientific paper

Many statistical analyses of the cosmic velocity field are based on the galaxy number-weighted sampling and therefore cannot escape from the bias effect. We study this problem in the framework of the stochastic bias mechanism using a simplified model and the results of a recent hydrodynamical simulation. We adopt the velocity correlation functions as representative examples and show that velocity statistics might be qualitatively affected by the poorly understood bias mechanism and strongly depend on the tracers of the cosmic velocity field.

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