Toward a Universal Formulation of the Halo Mass Function
Dec, 2010Citations per year
Abstract: (arXiv)
We compute the dark matter halo mass function using the excursion set formalism for a diffusive barrier with linearly drifting average which captures the main features of the ellipsoidal collapse model. We evaluate the non-Markovian corrections due to the sharp filtering of the linear density field in real space with a path-integral method. We find an unprecedented agreement with N-body simulation data with deviations within ~5% level over the range of masses probed by the simulations. This indicates that the Excursion Set in combination with a realistic modelling of the collapse threshold can provide a robust estimation of the halo mass function.- 95.75.Pq
- 02.50.Ey
- 98.62.Gq
- 95.35.+d
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