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IceCube Search for Dark Matter Annihilation in nearby Galaxies and Galaxy Clusters
- Source :
- Phys. Rev. D88 (2013) 122001
- Publication Year :
- 2013
-
Abstract
- We present the results of a first search for self-annihilating dark matter in nearby galaxies and galaxy clusters using a sample of high-energy neutrinos acquired in 339.8 days of live time during 2009/10 with the IceCube neutrino observatory in its 59-string configuration. The targets of interest include the Virgo and Coma galaxy clusters, the Andromeda galaxy, and several dwarf galaxies. We obtain upper limits on the cross section as a function of the weakly interacting massive particle mass between 300 GeV and 100 TeV for the annihilation into b bbar, W+W-, \tau+\tau-, \mu+\mu-, and \nu \nu bar. A limit derived for the Virgo cluster, when assuming a large effect from subhalos, challenges the weak interacting massive particle interpretation of a recently observed GeV positron excess in cosmic rays.<br />Comment: 10 pages, 9 figures
- Subjects :
- Astrophysics - High Energy Astrophysical Phenomena
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. D88 (2013) 122001
- Publication Type :
- Report
- Accession number :
- edsarx.1307.3473
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.88.122001