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Fermi LAT Search for Dark Matter in Gamma-ray Lines and the Inclusive Photon Spectrum

Abstract : Dark matter particle annihilation or decay can produce monochromatic gamma-ray lines and contribute to the diffuse gamma-ray background. Flux upper limits are presented for gamma-ray spectral lines from 7 to 200 GeV and for the diffuse gamma-ray background from 4.8 GeV to 264 GeV obtained from two years of Fermi Large Area Telescope data integrated over most of the sky. We give cross section upper limits and decay lifetime lower limits for dark matter models that produce gamma-ray lines or contribute to the diffuse spectrum, including models proposed as explanations of the PAMELA and Fermi cosmic-ray data.
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http://hal.in2p3.fr/in2p3-00699421
Contributor : Sylvie Flores <>
Submitted on : Monday, May 21, 2012 - 8:54:49 AM
Last modification on : Thursday, March 5, 2020 - 6:29:10 PM

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Markus Ackermann, Marco Ajello, A. Albert, Luca Baldini, Guido Barbiellini, et al.. Fermi LAT Search for Dark Matter in Gamma-ray Lines and the Inclusive Photon Spectrum. Physical Review D, American Physical Society, 2012, 86, pp.022002 ⟨10.1103/PhysRevD.86.022002⟩. ⟨in2p3-00699421⟩

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