Dark Matter Model Selection and the ATIC/PPB-BETS anomaly

Details Dark Matter Model Selection and the ATIC/PPB-BETS anomaly Dark Matter Model Selection and the ATIC/PPB-BETS anomaly

2008-12-22

arxiv.org/abs/0812.4200v1

JCAP 0905:015,2009

Astronomy and Astrophysics

Astrophysics

19 pages, 8 figures

Scientific paper

10.1088/1475-7516/2009/05/015

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: (i)monochromatic (ii)flat and (iii)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.

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