Second Moment of Halo Occupation Number

Details Second Moment of Halo Occupation Number Second Moment of Halo Occupation Number

2002-06-22

arxiv.org/abs/astro-ph/0206388v1

Astrophys.J.576:L105-L108,2002

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures; ApJL submitted

Scientific paper

10.1086/343762

The halo approach to large scale structure provides a physically motivated model to understand clustering properties of galaxies. An important aspect of the halo model involves a description on how galaxies populate dark matter halos or what is now called the halo occupation distribution. We discuss a way in which clustering information, especially in the non-linear regime, can be used to determine moments of this halo occupation number. We invert the non-linear part of the real space power spectrum from the PSCz survey to determine the second moment of the halo occupation distribution in a model independent manner. The precise measurement of higher order correlations can eventually be used to determine successive higher order moments of this distribution.

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