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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

An analytical approach to the dwarf galaxies cusp problem

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Author(s):
de Souza, R. S. [1, 2] ; Ishida, E. E. O. [1, 2]
Total Authors: 2
Affiliation:
[1] Univ Sao Paulo, IAG, BR-05508900 Sao Paulo - Brazil
[2] Univ Tokyo, IPMU, Kashiwa, Chiba 2778583 - Japan
Total Affiliations: 2
Document type: Journal article
Source: Astronomy & Astrophysics; v. 524, DEC 2010.
Web of Science Citations: 4
Abstract

Aims. An analytical solution for the discrepancy between observed core-like profiles and predicted cusp profiles in dark matter halos is studied. Methods. We calculate the distribution function for Navarro-Frenk-White halos and extract energy from the distribution, taking into account the effects of baryonic physics processes. Results. We show with a simple argument that we can reproduce the evolution of a cusp to a flat density profile by a decrease of the initial potential energy. (AU)

FAPESP's process: 09/05176-4 - Analysis of the influence of magnetic fields and cold dark matter in the formation and evolution of galaxies
Grantee:Rafael da Silva de Souza
Support type: Scholarships in Brazil - Post-Doctorate