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Title: Searching for dark matter annihilation from Milky Way dwarf spheroidal galaxies with six years of Fermi Large Area Telescope data

Journal Article · · Physical Review Letters
 [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). et al.

The dwarf spheroidal satellite galaxies (dSphs) of the MilkyWay are some of the most dark matter (DM) dominated objects known. We report on gamma-ray observations of Milky Way dSphs based on 6 years of Fermi Large Area Telescope data processed with the new Pass 8 event-level analysis. None of the dSphs are signi cantly detected in gamma rays, and we present upper limits on the DM annihilation cross section from a combined analysis of 15 dSphs. These constraints are among the strongest and most robust to date and lie below the canonical thermal relic cross section for DM of mass ≲100 GeV annihilating via quark and τ-lepton channels.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
Fermi-LAT; The Fermi-LAT Collaboration
Grant/Contract Number:
AC02-07CH11359; FIRB-2012-RBFR12PM1F; AC02-76SF00515
OSTI ID:
1234886
Alternate ID(s):
OSTI ID: 1227524; OSTI ID: 1354855
Report Number(s):
FERMILAB-PUB-15-081-AE; PRLTAO; arXiv eprint number arXiv:1503.02641
Journal Information:
Physical Review Letters, Vol. 115, Issue 23; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 742 works
Citation information provided by
Web of Science

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