Name: Diffuse Galactic Gamma-Rays and Cosmic Rays in a Self Consistent Model: Constraints on Dark Matter Properties
Start: 2012-12-03T14:30:00+01:00
End: 2012-12-03T15:30:00+01:00
Location: DESY Hamburg

Description

The measurement of the diffuse gamma-ray flux is one of the prominent tools for indirect dark matter searches. We present a new computation of the Galactic gamma-ray background in which cosmic ray propagation and gamma-ray emissivity are treated within a self-consistent model, with particular attention to the gas distribution in the Galaxy. After tuning propagation properties against local measurements of cosmic ray nuclei and leptons, the gamma-ray flux is found to be in fairly good agreement with Fermi data in all regions of the sky. Limits on possible contributions to the gamma-ray flux from the pair annihilation of dark matter particles are discussed, especially in connection with the recent claims of evidence for a monochromatic feature at energies around 130 GeV from the inner Galaxy.

Diffuse Galactic Gamma-Rays and Cosmic Rays in a Self Consistent Model: Constraints on Dark Matter Properties

by Maryam Tavakoli

Building 67, SemRm 10

DESY Hamburg