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Search for Dark Matter Satellites using the FERMI-LAT

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arxiv 1201.2691 v1 pith:K7OJ7E7P submitted 2012-01-12 astro-ph.HE hep-exhep-ph

The Fermi LAT Collaboration: M. Ackermann , A. Albert , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini
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R. D. Blandford E. D. Bloom E. Bonamente A. W. Borgland E. Bottacini T. J. Brandt J. Bregeon M. Brigida P. Bruel R. Buehler T. H. Burnett G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian C. Cecchi E. Charles J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi J. Conrad S. Cutini F. de Palma C. D. Dermer S. W. Digel E. do Couto e Silva P. S. Drell A. Drlica-Wagner R. Essig L. Falletti C. Favuzzi S. J. Fegan W. B. Focke Y. Fukazawa S. Funk P. Fusco F. Gargano S. Germani N. Giglietto F. Giordano M. Giroletti T. Glanzman G. Godfrey I. A. Grenier S. Guiriec M. Gustafsson D. Hadasch M. Hayashida X. Hou R. E. Hughes R. P. Johnson A. S. Johnson T. Kamae H. Katagiri J. Kataoka J. Knodlseder M. Kuss J. Lande L. Latronico S.-H. Lee A. M. Lionetto M. Llena Garde F. Longo F. Loparco M. N. Lovellette P. Lubrano M. N. Mazziotta J. E. McEnery P. F. Michelson W. Mitthumsiri T. Mizuno A. A. Moiseev C. Monte M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia M. Naumann-Godo J. P. Norris E. Nuss T. Ohsugi A. Okumura E. Orlando J. F. Ormes M. Ozaki D. Paneque V. Pelassa M. Pierbattista F. Piron G. Pivato T. A. Porter S. Raino R. Rando M. Razzano A. Reimer O. Reimer S. Ritz H. F.-W. Sadrozinski N. Sehgal C. Sgro E. J. Siskind P. Spinelli L. Strigari D. J. Suson H. Tajima H. Takahashi T. Tanaka J. G. Thayer J. B. Thayer L. Tibaldo M. Tinivella D. F. Torres E. Troja Y. Uchiyama T. L. Usher J. Vandenbroucke V. Vasileiou G. Vianello V. Vitale A. P. Waite P. Wang B. L. Winer K. S. Wood Z. Yang S. Zalewski S. Zimmer
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classification astro-ph.HEhep-exhep-ph
keywords darkmattersatellitesannihilationgamma-raywimpchannelexpected
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Numerical simulations based on the Lambda-CDM 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 $b \bar b$ 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.

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Cited by 6 Pith papers

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