Search for relic neutralinos with Milagro

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


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.

Original languageEnglish
Title of host publicationHigh Energy Gamma-Ray Astronomy - 2nd International Symposium on High Energy Gamma-Ray Astronomy
Number of pages6
StatePublished - 2005
Externally publishedYes
EventInternational Symposium on High Energy Gamma-Ray Astronomy - Heidelberg, Germany
Duration: 26 Jul 200430 Jul 2004

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceInternational Symposium on High Energy Gamma-Ray Astronomy


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