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High energy cosmic rays from decaying dark matter
Author(s) -
Ibarra A.
Publication year - 2011
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.201100045
Subject(s) - physics , dark matter , positron , flux (metallurgy) , cosmic ray , fermi gamma ray space telescope , neutrino , astrophysics , pamela detector , anisotropy , gamma ray , dipole , electron , nuclear physics , ultra high energy cosmic ray , optics , materials science , quantum mechanics , metallurgy
We discuss the implications of the excess in the total electron plus positron flux and the positron fraction reported by the Fermi and PAMELA collaborations, respectively, for the scenario of decaying dark matter. We also discuss the constraints on this scenario from measurements of other cosmic ray species and the predictions for the diffuse gamma ray flux and the neutrino flux. In particular, we expect a sizable dipole‐like anisotropy in the diffuse gamma‐ray flux which may be observed by the Fermi‐LAT in the near future.