The Galactic positron flux and dark matter substructures

Abstract

In this paper we calculate the Galactic positron flux from dark matter annihilation in the frame of supersymmetry, taking the enhancement of the flux by existence of dark matter substructures into account. The propagation of positrons in the Galactic magnetic field is solved in a realistic numerical model GALPROP. The secondary positron flux is recalculated in the GLAPROP model. The total positron flux from secondary products and dark matter annihilation can fit the HEAT data well when taking a cuspy density profile of the substructures.

16 pages, 10 figures, accepted by JCAP

References in corpus (2)

• Clumpiness of Dark Matter and Positron Annihilation Signal: Computing the odds of the Galactic Lottery
• Local dark matter clumps and the cosmic ray positron excess

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• ATIC and PAMELA Results on Cosmic e^\pm Excesses and Neutrino Masses
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• The diffuse Galactic gamma-rays from dark matter annihilation
• Constraints on the Dark Matter Annihilations by Neutrinos with Substructure Effects Included
• Dark matter annihilation and non-thermal Sunyaev-Zel'dovich effect: II. dwarf spheroidal galaxy
• Perspective of Galactic dark matter subhalo detection on Fermi from the EGRET observation