Geneva University seminars

Imprint of primordial non-Gaussianity on dark matter halo profile

by Azadeh Moradinezhad Dizgah (Geneva University)

Europe/Zurich
Room 234 (Geneva University)

Room 234

Geneva University

24 quai E. Ansermet, CH-1211 Genève 4
Description
In this talk I will discuss the impact of primordial non-Gaussianity on the density profile of dark matter halos. We use the semianalytical model introduced recently by Dalal et al. which relates the peaks of the initial linear density field to the final density profile of dark matter halos and extend their model to non-Gaussian initial conditions. We use the path-integral formulation of excursion set theory by Maggiore and Riotto to calculate the non-Gaussian corrections to the peak profile and derive the statistics of the peaks of the non-Gaussian density field. In the context of the semianalytic model for halo profiles, currently allowed values for primordial non-Gaussianity would increase the shapes of the inner dark matter profiles, but only at the sub-percent level except in the very innermost regions.
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