Constraints on the Galactic Halo Dark Matter from Fermi-LAT Diffuse Measurements

Details Constraints on the Galactic Halo Dark Matter from Fermi-LAT Diffuse Measurements Constraints on the Galactic Halo Dark Matter from Fermi-LAT Diffuse Measurements

2010-12-02

arxiv.org/abs/1012.0588v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Contribution to the IDM 2010 conference proceedings

Scientific paper

The diffuse gamma ray emission from astrophysical backgrounds in our Galaxy and the signal due to the annihilation or decay of Dark Matter (DM) in the Galactic Halo are expected to have a substantially different morphology and spectral signatures. In order to exploit this feature we perform a full sky and spectral binned likelihood fit of both components, using data collected during the first 21 months of operation of the Fermi-LAT observatory. Preliminary constraints are presented on the DM annihilation cross section and decaying rate for various masses and annihilation/decay modes.

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