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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 bb??, W+W?, ?+??, ?+??, and ????. A limit derived for the Virgo cluster, when assuming a large effect from subhalos, challenges the weakly interacting massive particle interpretation of a recently observed GeV positron excess in cosmic rays.
Original language | English |
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Article number | 122001 |
Number of pages | 10 |
Journal | Physical Review D. Particles, Fields, Gravitation, and Cosmology |
Volume | 88 |
Issue number | 12 |
Publication status | Published - 6 Dec 2013 |
Keywords
- IceCube
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- 1 Finished
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SRP8: Strategic Research Programme: High-Energy Physics at the VUB
D'Hondt, J., Van Eijndhoven, N., Craps, B. & Buitink, S.
1/11/12 → 31/10/24
Project: Fundamental