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  • Fermi establishes classical...
    Ackermann, Markus; Ajello, Marco; Albert, A.; Baldini, Luca; Ballet, Jean; Barbiellini, Guido; Bastieri, D.; Bellazzini, R.; Bissaldi, E.; D. Blandford, R.; D. Bloom, E.; Bottacini, E.; J. Brandt, T.; Bregeon, J.; Bruel, Pascal; Buehler, R.; Buson, S.; A. Caliandro, G.; A. Cameron, R.; Caragiulo, M.; Caraveo, P. A.; Cavazzuti, E.; Charles, E.; Chekhtman, A.; C. Cheung, C.; Chiang, J.; Chiaro, G.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Conrad, J.; Corbel, S.; d'Ammando, F.; de Angelis, A.; R. den Hartog, P.; de Palma, F.; D. Dermer, C.; Desiante, R.; W. Digel, S.; Di Venere, L.; Do Couto E Silva, E.; Donato, D.; S. Drell, P.; Drlica-Wagner, A.; Favuzzi, C.; C. Ferrara, E.; B. Focke, W.; Franckowiak, A.; Fuhrmann, L.; Fukazawa, Y.; Fusco, P.; Gargano, F.; Gasparrini, D.; Germani, S.; Giglietto, N.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; A. Grenier, I.; E. Grove, J.; Guiriec, S.; Hadasch, D.; K. Harding, A.; Hayashida, M.; Hays, E.; Hewitt, J.W.; B. Hill, A.; Hou, X.; Jean, P.; Jogler, T.; J ́ Ohannesson, G.; S. Johnson, A.; N. Johnson, W.; Kerr, M.; Kn ̈ Odlseder, J.; Kuss, M.; Larsson, S.; Latronico, L.; Lemoine-Goumard, M.; Longo, F.; Loparco, F.; Lott, B.; N. Lovellette, M.; Lubrano, P.; Manfreda, A.; Martin, P.; Massaro, F.; Mayer, M.; N. Mazziotta, M.; E. Mcenery, J.; F. Michelson, P.; Mitthumsiri, W.; Mizuno, T.; E. Monzani, M.; Morselli, A.; V. Moskalenko, I.; Murgia, S.; Nemmen, R.; Nuss, E.

    Science (American Association for the Advancement of Science), 08/2014, Letnik: 345, Številka: 6196
    Journal Article

    A classical nova results from runaway thermonuclear explosions on the surface of a white dwarf that accretes matter from a low-mass main-sequence stellar companion. In 2012 and 2013, three novae were detected in γ rays and stood in contrast to the first γ-ray–detected nova V407 Cygni 2010, which belongs to a rare class of symbiotic binary systems. Despite likely differences in the compositions and masses of their white dwarf progenitors, the three classical novae are similarly characterized as soft-spectrum transient γ-ray sources detected over 2- to 3-week durations. The γ-ray detections point to unexpected high-energy particle acceleration processes linked to the mass ejection from thermonuclear explosions in an unanticipated class of Galactic γ-ray sources.