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Title: Search For Dark Matter Satellites Using Fermi-Lat

Abstract

Numerical simulations based on the ΛCDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites. We report the results of a Large Area Telescope (LAT) search for these satellites via the γ-ray emission expected from the annihilation of weakly interacting massive particle (WIMP) dark matter. Some dark matter satellites are expected to have hard γ-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on γ-ray spectra consistent with WIMP annihilation through the $$b \bar{b}$$ channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100 GeV WIMP annihilating through the $$b \bar{b}$$ channel.

Authors:
 [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); et al.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1356758
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 747; Journal Issue: 2; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Ackermann, M. Search For Dark Matter Satellites Using Fermi-Lat. United States: N. p., 2012. Web. doi:10.1088/0004-637X/747/2/121.
Ackermann, M. Search For Dark Matter Satellites Using Fermi-Lat. United States. doi:https://doi.org/10.1088/0004-637X/747/2/121
Ackermann, M. Thu . "Search For Dark Matter Satellites Using Fermi-Lat". United States. doi:https://doi.org/10.1088/0004-637X/747/2/121. https://www.osti.gov/servlets/purl/1356758.
@article{osti_1356758,
title = {Search For Dark Matter Satellites Using Fermi-Lat},
author = {Ackermann, M.},
abstractNote = {Numerical simulations based on the ΛCDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites. We report the results of a Large Area Telescope (LAT) search for these satellites via the γ-ray emission expected from the annihilation of weakly interacting massive particle (WIMP) dark matter. Some dark matter satellites are expected to have hard γ-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on γ-ray spectra consistent with WIMP annihilation through the $b \bar{b}$ channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100 GeV WIMP annihilating through the $b \bar{b}$ channel.},
doi = {10.1088/0004-637X/747/2/121},
journal = {Astrophysical Journal},
number = 2,
volume = 747,
place = {United States},
year = {2012},
month = {2}
}

Journal Article:
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Cited by: 59 works
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