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Morphology of mass distribution in galaxy clusters and properties of dark matter

Grant number: 07/03575-3
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): August 01, 2007
Effective date (End): August 31, 2008
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
Principal Investigator:Laerte Sodré Junior
Grantee:Luana Perez França
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

We want to obtain astrophysical constraints on the nature of dark matter. For that, we will study the distributions of dark matter, stars and gas of a well defined sample of half hundred galaxy clusters. The analysis of the morphology of these distributions (concentrations, elipticities and diferences between centroids) will be used to study the consistence of the ACDM model and to put limits on cosmological parameters and on some properties of the dark matter, like its self-interaction cross-section. (AU)