Bibcode
DOI
Betancort-Rijo, J. E.; Montero-Dorta, Antonio D.
Bibliographical reference
The Astrophysical Journal, Volume 650, Issue 2, pp. L95-L98.
Advertised on:
10
2006
Journal
Citations
7
Refereed citations
7
Description
We claim that the discrepancy found between the theoretical predictions
for the cosmic mass function and those found in numerical simulations is
due to the fact that in deriving the former, all mass elements are
assumed to be at the center of the object they belong to (the
all-mass-at-center problem). By an appropriate treatment of this
problem, using the spherical collapse model (which is not a bad
approximation in the high-mass limit), we obtain both the high-mass
behavior found in simulations and the true asymptotic behavior of the
mass function (for arbitrarily high masses). Therefore, we conclude
that, by combining ellipsoidal dynamics with a suitable treatment of the
all-mass-at-center problem (which we will show in follow-up work), a
theoretical prediction for the cosmic mass function in full agreement
with simulations may be obtained.