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Title:Constraints on the Galactic Dark Matter signal from the Fermi-LAT measurement of the diffuse gamma-ray emission
Authors:Fermi LAT Collaboration (Authorship owner)
Zaharijas, Gabrijela (Author)
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Work type:Not categorized (r6)
Tipology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract:We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi Large Area Telescope with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal, constraints are presented. We set both, conservative dark matter limits requiring that the dark matter signal does not exceed the observed diffuse gamma-ray emission and limits derived based on modeling the foreground astrophysical diffuse emission. Uncertainties in several parameters which characterize conventional astrophysical emission are taken into account using a profile likelihood formalism. The resulting limits impact the range of particle masses over which dark matter thermal production in the early Universe is possible, and challenge the interpretation of the PAMELA/Fermi-LAT cosmic ray anomalies as annihilation of dark matter.
Keywords:gamma rays, Galactic diffuse emission, dark matter serach
Year of publishing:2012
Number of pages:5
COBISS_ID:4283643 Link is opened in a new window
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Record is a part of a monograph

Title:4th International Fermi Symposium
Conference organizer:NASA- Goddard and SLAC- Stanford
Place of publishing:eConf C121028 (2012) 183
Year of publishing:2012
Editors:Terry Brandt