Dark matter model selection and the ATIC/PPB-BETS anomaly

Chuan Ren Chen, Koichi Hamaguchi, Mihoko M. Nojiri, Fuminobu Takahashi, Shoji Torii

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16 Citations (Scopus)

Abstract

We argue that we may be able to sort out dark matter models in which electrons are generated through the annihilation and/or decay of dark matter, by using a fact that the initial energy spectrum is reflected in the cosmic-ray electron flux observed at the Earth even after propagation through the Galactic magnetic field. To illustrate our idea we focus on three representative initial spectra: monochromatic, flat and double-peak ones. We find that those three cases result in significantly different energy spectra, which may be probed by the Fermi satellite in operation or an up-coming cosmic-ray detector such as CALET.

Original languageEnglish
Article number015
JournalJournal of Cosmology and Astroparticle Physics
Volume2009
Issue number5
DOIs
Publication statusPublished - 2009

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Keywords

  • Cosmic rays
  • Dark matter

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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