Search for relic neutralinos with Milagro

Details Search for relic neutralinos with Milagro Search for relic neutralinos with Milagro

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..745..685f&link_type=abstract

HIGH ENERGY GAMMA-RAY ASTRONOMY: 2nd International Symposium on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Vo

Astronomy and Astrophysics

Astronomy

Dark Matter, Gamma-Ray Sources, Gamma-Ray Bursts, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

The neutralino, the lightest stable supersymmetric particle, is a strong theoretical candidate for the missing astronomical ``dark matter''. Depending on their annihilation cross section, relic neutralinos from early formation of the Universe trapped in orbits around the Sun may currently be annihilating at measurable rates. The Minimal Supersymmetric extensions of the Standard Model predict that such annihilations should produce gamma rays with energies above 100 GeV.
Milagro is an air shower array which uses the water Cherenkov technique and is capable of detecting TeV gamma rays from the direction of the Sun with an angular resolution of 0.75 degrees. Analysis of Milagro data with an exposure to the Sun of 1165 hours shows no statistically significant signal. Resulting limits that can be set on the gamma-ray flux due to near-Solar neutralino annihilations and on neutralino cross-section are presented.

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