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

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

Research output: Contribution to journalArticle

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 Nov 9

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cosmic rays
dark matter
energy spectra
anomalies
interstellar magnetic fields
electron flux
propagation
detectors
decay
electrons

Keywords

  • Cosmic rays
  • Dark matter

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Dark matter model selection and the ATIC/PPB-BETS anomaly. / Chen, Chuan Ren; Hamaguchi, Koichi; Nojiri, Mihoko M.; Takahashi, Fuminobu; Torii, Shoji.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2009, No. 5, 015, 09.11.2009.

Research output: Contribution to journalArticle

Chen, Chuan Ren ; Hamaguchi, Koichi ; Nojiri, Mihoko M. ; Takahashi, Fuminobu ; Torii, Shoji. / Dark matter model selection and the ATIC/PPB-BETS anomaly. In: Journal of Cosmology and Astroparticle Physics. 2009 ; Vol. 2009, No. 5.
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