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:
-
- 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.:
- Fermi LAT Collaboration
- OSTI Identifier:
- 1356758
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- The 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. https://doi.org/10.1088/0004-637X/747/2/121
Ackermann, M. 2012.
"Search For Dark Matter Satellites Using Fermi-Lat". United States. 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},
url = {https://www.osti.gov/biblio/1356758},
journal = {The Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 747,
place = {United States},
year = {Thu Feb 23 00:00:00 EST 2012},
month = {Thu Feb 23 00:00:00 EST 2012}
}
Web of Science
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