Document Detail


Evolution of the dark matter distribution at the galactic center.
MedLine Citation:
PMID:  15169336     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Annihilation radiation from neutralino dark matter at the Galactic center (GC) would be greatly enhanced if the dark matter were strongly clustered around the supermassive black hole (SBH). The existence of a dark matter "spike" is made plausible by the observed, steeply rising stellar density near the GC SBH. Here the time-dependent equations describing gravitational interaction of the dark matter with the stars are solved. Scattering of dark matter particles by stars would substantially lower the dark matter density near the GC SBH over 10 Gyr, due both to kinetic heating and to capture of dark matter particles by the SBH. This evolution implies a decrease by several orders of magnitude in the observable flux of annihilation products compared with models that associate a steep, dark matter spike with the SBH.
Authors:
David Merritt
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Publication Detail:
Type:  Journal Article     Date:  2004-05-20
Journal Detail:
Title:  Physical review letters     Volume:  92     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-05-31     Completed Date:  2004-06-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  201304     Citation Subset:  -    
Affiliation:
Department of Physics, Rochester Institute of Technology, Rochester, New York 14623, USA.
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