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Title: Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope

Abstract

Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% con dence level upper limits range from about 10-26 cm3s-1 at 5 GeV to about 5 X10-23 cm3s-1 at 1 TeV, depending on the dark matter annihilation nal state. For the rst time, using gamma rays, we are able to rule out models with the most generic cross section (~ 3 X 10-26 cm3s-1 for a purely s-wave cross section), without assuming additional boost factors.

Authors:
 [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); et al.
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
The Fermi-LAT Collaboration
OSTI Identifier:
1356782
Alternate Identifier(s):
OSTI ID: 1098376
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 24; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Ackermann, M. Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope. United States: N. p., 2011. Web. doi:10.1103/PhysRevLett.107.241302.
Ackermann, M. Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope. United States. https://doi.org/10.1103/PhysRevLett.107.241302
Ackermann, M. 2011. "Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope". United States. https://doi.org/10.1103/PhysRevLett.107.241302. https://www.osti.gov/servlets/purl/1356782.
@article{osti_1356782,
title = {Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope},
author = {Ackermann, M.},
abstractNote = {Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% con dence level upper limits range from about 10-26 cm3s-1 at 5 GeV to about 5 X10-23 cm3s-1 at 1 TeV, depending on the dark matter annihilation nal state. For the rst time, using gamma rays, we are able to rule out models with the most generic cross section (~ 3 X 10-26 cm3s-1 for a purely s-wave cross section), without assuming additional boost factors.},
doi = {10.1103/PhysRevLett.107.241302},
url = {https://www.osti.gov/biblio/1356782}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 24,
volume = 107,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2011},
month = {Thu Dec 01 00:00:00 EST 2011}
}

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Cited by: 439 works
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