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IceCube search for dark matter annihilation in nearby galaxies and galaxy clusters

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 bb̄, W+W-, τ+τ -, μ+μ-, and νν̄. 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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevD.88.122001

Authors



Publisher:
American Physical Society
Journal:
Physical Review D More from this journal
Volume:
88
Issue:
12
Publication date:
2013-12-15
DOI:
EISSN:
1550-2368
ISSN:
1550-7998


Keywords:
Pubs id:
pubs:446032
UUID:
uuid:ada35d82-4dea-4569-b6c4-dc2ee3fbb005
Local pid:
pubs:446032
Source identifiers:
446032
Deposit date:
2014-02-08

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