Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ascl.soft07002b&link_type=abstract
Astrophysics Source Code Library, record ascl:1007.002
Astronomy and Astrophysics
Astrophysics
Scientific paper
Infall is a code for calculating the mean initial and final density profiles around a virialized dark matter halo. The initial profile is derived from the statistics of the initial Gaussian random field, accounting for the problem of peaks within peaks using the extended Press-Schechter model. Spherical collapse then yields the typical density and velocity profiles of the gas and dark matter that surrounds the final, virialized halo. In additional to the mean profile, ? profiles are calculated and can be used as an estimate of the scatter.
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