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26 April 2024

» arxiv » 1201.2691

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Search for Dark Matter Satellites using the FERMI-LAT
Fermi LAT Collaboration ; M. Ackermann ; A. Albert ; L. Baldini ; J. Ballet ; G. Barbiellini ; D. Bastieri ; K. Bechtol ; R. Bellazzini ; 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 ;
Date:	12 Jan 2012
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 $b ar b$ 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 $b ar b$ channel.
Source:	arXiv, 1201.2691
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