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Physics

 

Phys. Rev. Lett. 104, 091302 (2010) [6 pages]

Fermi Large Area Telescope Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications

 
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A. A. Abdo et al. (Fermi LAT Collaboration) 
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Received 19 November 2009; published 5 March 2010

Dark matter (DM) particle annihilation or decay can produce monochromatic ? rays readily distinguishable from astrophysical sources. ?-ray line limits from 30 to 200 GeV obtained from 11 months of Fermi Large Area Space Telescope data from 20–300 GeV are presented using a selection based on requirements for a ?-ray line analysis, and integrated over most of the sky. We obtain ?-ray line flux upper limits in the range 0.6–4.5×10-9  cm-2 s-1, and give corresponding DM annihilation cross-section and decay lifetime limits. Theoretical implications are briefly discussed.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.091302
DOI:
10.1103/PhysRevLett.104.091302
PACS:
95.35.+d, 95.85.Pw

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Category: Physics