Mathematics – Logic
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21715103n&link_type=abstract
American Astronomical Society, AAS Meeting #217, #151.03; Bulletin of the American Astronomical Society, Vol. 43, 2011
Mathematics
Logic
Scientific paper
According to the current cosmological concordance model, 23% of the universe's denisty is consisted of cold dark matter (CDM). One of the candidates for the CDM is Weakly Interacting Massive Particle (WIMP). Supersymmetric (SUSY) extension of the Standard Model of particle physics has predicted a stable and electrically neutral particle with rest mass between 1 GeV and 1000 GeV. It is known as the neutralino. Colafrancesco et al. (2007) proposes possible indirect detection of the neutralino through decay products of its self annihilation in nearby dwarf spheroidal (dSph) galaxies. We have used Green Bank Telescope (GBT) to search for synchrotron radiation from the self annihilation in four sources: Draco, Ursa Major II, Willman 1, and Coma Berenices. We discuss the analysis of these data, present maps and radial profiles of these four dSph systems, and a comparison with theoretical predictions of the neutralino decay signature.
Aguirre James
Mason Brian
Nhan Bang
Spekkens Kristine
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