Numerical 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 b (b) over 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 GeV WIMP annihilating through the b (b) over bar channel

Search for dark matter satellites using fermi-LAT / Ackermann, M; Albert, A; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Bechtol, K; Bellazzini, R; Blandford, Rd; Bloom, Ed; Bonamente, E; Borgland, Aw; Bottacini, E; Brandt, Tj; Bregeon, J; Brigida, M; Bruel, P; Buehler, R; Burnett, Th; Caliandro, Ga; Cameron, Ra; Caraveo, Pa; Casandjian, Jm; Cecchi, C; Charles, E; Chiang, J; Ciprini, S; Claus, R; Cohen Tanugi, J; Conrad, J; Cutini, S; de Palma, F; Dermer, Cd; Digel, Sw; Silva, Ede; Drell, Ps; Drlica Wagner, A; Essig, R; Falletti, L; Favuzzi, Cecilia; Fegan, Sj; Focke, Wb; Fukazawa, Y; Funk, S; Fusco, P; Gargano, F; Germani, S; Giglietto, Nicola; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Grenier, Ia; Guiriec, S; Gustafsson, M; Hadasch, D; Hayashida, M; Hou, X; Hughes, Re; Johnson, Rp; Johnson, As; Kamae, T; Katagiri, H; Kataoka, J; Knodlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, Sh; Lionetto, Am; Garde, Ml; Longo, F; Loparco, F; Lovellette, Mn; Lubrano, P; Mazziotta, Mn; Mcenery, Je; Michelson, Pf; Mitthumsiri, W; Mizuno, T; Moiseev, Aa; Monte, C; Monzani, Me; Morselli, A; Moskalenko, Iv; Murgia, S; Naumann Godo, M; Norris, Jp; Nuss, E; Ohsugi, T; Okumura, A; Orlando, E; Ormes, Jf; Ozaki, M; Paneque, D; Pelassa, V; Pierbattista, M; Piron, F; Pivato, G; Porter, Ta; Raino, S; Rando, R; Razzano, M; Reimer, A; Reimer, O; Ritz, S; Sadrozinski, Hfw; Sehgal, N; Sgro, C; Siskind, Ej; Spinelli, P; Strigari, L; Suson, Dj; Tajima, H; Takahashi, H; Tanaka, T; Thayer, Jg; Thayer, Jb; Tibaldo, L; Tinivella, M; Torres, Df; Troja, E; Uchiyama, Y; Usher, Tl; Vandenbroucke, J; Vasileiou, V; Vianello, G; Vitale, V; Waite, Ap; Wang, P; Winer, Bl; Wood, Ks; Yang, Z; Zalewski, S; Zimmer, S.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 747:2(2012). [10.1088/0004-637X/747/2/121]

Search for dark matter satellites using fermi-LAT

FAVUZZI, Cecilia;GIGLIETTO, Nicola;
2012-01-01

Abstract

Numerical 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 b (b) over 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 GeV WIMP annihilating through the b (b) over bar channel
2012
Search for dark matter satellites using fermi-LAT / Ackermann, M; Albert, A; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Bechtol, K; Bellazzini, R; Blandford, Rd; Bloom, Ed; Bonamente, E; Borgland, Aw; Bottacini, E; Brandt, Tj; Bregeon, J; Brigida, M; Bruel, P; Buehler, R; Burnett, Th; Caliandro, Ga; Cameron, Ra; Caraveo, Pa; Casandjian, Jm; Cecchi, C; Charles, E; Chiang, J; Ciprini, S; Claus, R; Cohen Tanugi, J; Conrad, J; Cutini, S; de Palma, F; Dermer, Cd; Digel, Sw; Silva, Ede; Drell, Ps; Drlica Wagner, A; Essig, R; Falletti, L; Favuzzi, Cecilia; Fegan, Sj; Focke, Wb; Fukazawa, Y; Funk, S; Fusco, P; Gargano, F; Germani, S; Giglietto, Nicola; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Grenier, Ia; Guiriec, S; Gustafsson, M; Hadasch, D; Hayashida, M; Hou, X; Hughes, Re; Johnson, Rp; Johnson, As; Kamae, T; Katagiri, H; Kataoka, J; Knodlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, Sh; Lionetto, Am; Garde, Ml; Longo, F; Loparco, F; Lovellette, Mn; Lubrano, P; Mazziotta, Mn; Mcenery, Je; Michelson, Pf; Mitthumsiri, W; Mizuno, T; Moiseev, Aa; Monte, C; Monzani, Me; Morselli, A; Moskalenko, Iv; Murgia, S; Naumann Godo, M; Norris, Jp; Nuss, E; Ohsugi, T; Okumura, A; Orlando, E; Ormes, Jf; Ozaki, M; Paneque, D; Pelassa, V; Pierbattista, M; Piron, F; Pivato, G; Porter, Ta; Raino, S; Rando, R; Razzano, M; Reimer, A; Reimer, O; Ritz, S; Sadrozinski, Hfw; Sehgal, N; Sgro, C; Siskind, Ej; Spinelli, P; Strigari, L; Suson, Dj; Tajima, H; Takahashi, H; Tanaka, T; Thayer, Jg; Thayer, Jb; Tibaldo, L; Tinivella, M; Torres, Df; Troja, E; Uchiyama, Y; Usher, Tl; Vandenbroucke, J; Vasileiou, V; Vianello, G; Vitale, V; Waite, Ap; Wang, P; Winer, Bl; Wood, Ks; Yang, Z; Zalewski, S; Zimmer, S.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 747:2(2012). [10.1088/0004-637X/747/2/121]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/51930
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