Fermi LAT Search for Photon Lines from 30 to 200 GeV and Dark Matter Implications

• Published in: arXiv.org 2010-01
• Main Authors: Abdo, A A, Ackermann, M, Baldini, L, Bastieri, D, Bonamente, E, Brez, A, Bruel, P, Burnett, T H, Caliandro, G A, Cameron, R A, Caraveo, P A, Carrigan, S, Casandjian, J M, Elik, O C, Claus, R, Cohen-Tanugi, J, Dermer, C D, Edmonds, Y, Essig, R, Farnier, C, Frailis, M, Fukazawa, Y, Funk, S, Fusco, P, Gehrels, N, Giglietto, N, Giordano, F, Glanzman, T, Grenier, I A, Grove, J E, Guillemot, L, Guiriec, S, Gustafsson, M, Hadasch, D, Horan, D, Johnson, A S, Johnson, W N, Katagiri, H, Kataoka, J, Kerr, M, dlseder, J Kno, Kuss, M, Lande, J, Latronico, L, Loparco, F, Lovellette, M N, Lubrano, P, Makeev, A, Mazziotta, M N, McEnery, J E, Meurer, C, Michelson, P F, Mitthumsiri, W, Mizuno, T, Moiseev, A A, Monte, C, Morselli, A, Nolan, P L, Norris, J P, Orlando, E, Ormes, J F, Ozaki, M, Paneque, D, Panetta, J H, Parent, D, Pelassa, V, Pesce-Rollins, M, Piron, F, Rainó, S, Razzano, M, Reimer, O, Ripken, J, Ritz, S, Sadrozinski, H F -W, Sander, A, Saz Parkinson, P M, Scargle, J D, Schalk, T L, Sellerholm, A, Sgró, C, Siskind, E J, Smith, D A, Smith, P D, Spandre, G, Spinelli, P, J -L Starck, Strickman, M S, Suson, D J, Takahashi, H, Tanaka, T, Thayer, J G, Tibaldo, L, Torres, D F, Uchiyama, Y, Vasileiou, V, Vilchez, N, Wang, P, Wood, K S, Ylinen, T, Ziegler, M
• Format: Article
• Language: English
• Subjects: Dark matter; Particle decay; Space telescopes
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1001.4836

Dark matter (DM) particle annihilation or decay can produce monochromatic \(\gamma\)-rays readily distinguishable from astrophysical sources. \(\gamma\)-ray line limits from 30 GeV to 200 GeV obtained from 11 months of Fermi Large Area Space Telescope data from 20-300 GeV are presented using a selection based on requirements for a \(\gamma\)-ray line analysis, and integrated over most of the sky. We obtain \(\gamma\)-ray line flux upper limits in the range \(0.6-4.5\times 10^{-9}\mathrm{cm}^{-2}\mathrm{s}^{-1}\), and give corresponding DM annihilation cross-section and decay lifetime limits. Theoretical implications are briefly discussed.