NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Search for Dark Matter Satellites Using the Fermi-LatNumerical simulations based on the ACDM 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 gamma-ray emission expected from the annihilation of weakly interacting massive particle (WIMP) dark matter. Some dark matter satellites are expected to have hard gamma-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on gamma-ray spectra consistent with WIMP annihilation through the bb(sup raised bar) 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 Ge V WIMP annihilating through the bb(sup raised bar) channel.
Document ID
20120009480
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Ackermann, M. (Deutsches Elektronen-Synchrotron Zeuthen, Germany)
Albert, A. (Ohio State Univ. Columbus, OH, United States)
Baldini, L. (Istituto Nazionale di Fisica Nucleare Pisa, Italy)
Ballet, J. (Centre National de la Recherche Scientifique Gif-sur-Yvette, France)
Barbiellini, G. (Istituto Nazionale di Fisica Nucleare Trieste, Italy)
Bastieri, D. (Istituto Nazionale di Fisica Nucleare Padova, Italy)
Bechtol, K. (Stanford Univ. Stanford, CA, United States)
Bellazzini, R. (Istituto Nazionale di Fisica Nucleare Pisa, Italy)
Blandford, R. D. (Stanford Univ. Stanford, CA, United States)
Bloom, E. D. (Stanford Univ. Stanford, CA, United States)
Bonamente, E. (Istituto Nazionale di Fisica Nucleare Perugia, Italy)
Borgland, A. W. (Stanford Univ. Stanford, CA, United States)
Bottacini, E. (Stanford Univ. Stanford, CA, United States)
Brandt, T. J. (Centre National de la Recherche Scientifique Cedex, France)
Bregeon, J. (Istituto Nazionale di Fisica Nucleare Pisa, Italy)
Brigida, M. (Politecnico di Bari Bari, Italy)
Bruel, P. (Centre National de la Recherche Scientifique Palaiseau, France)
Buehler, R. (Stanford Univ. Stanford, CA, United States)
Burnett, T. H. (Washington Univ. Seattle, WA, United States)
Caliandro, G. A. (Consejo Superior de Investigaciones Cientificas Barcelona, Spain)
Cameron, R. A. (Stanford Univ. Stanford, CA, United States)
Caraveo, P. A. (Istituto di Astrofisica Spaziale e Fisica Cosmica (INAF-IASF) Rome, Italy)
Casandjian, J. M. (Centre National de la Recherche Scientifique Gif-sur-Yvette, France)
McEnery, J. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Troja, E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 25, 2013
Publication Date
January 1, 2012
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available