ACKERMANN, Markus; AJELLO, Marco; ALLAFORT, A.; B. ATWOOD, W.; BALDINI, Luca; BARBIELLINI, Guido; BASTIERI, D.; BECHTOL, K.; BELLAZZINI, R.; N. BHAT, P.; D. BLANDFORD, R.; BONAMENTE, E.; W. BORGLAND, A.; BREGEON, J.; S. BRIGGS, M.; BRIGIDA, M.; BRUEL, Pascal; BUEHLER, R.; M. BURGESS, J.; BUSON, S.; A. CALIANDRO, G.; A. CAMERON, R.; M. CASANDJIAN, J.; CECCHI, C.; CHARLES, E.; CHEKHTMAN, A.; CHIANG, J.; CIPRINI, S.; CLAUS, R.; COHEN-TANUGI, J.; CONNAUGHTON, V.; CONRAD, J.; CUTINI, S.; R. DENNIS, B.; DE PALMA, F.; D. DERMER, C.; W. DIGEL, S.; SILVA, E.; S. DRELL, P.; DRLICA-WAGNER, A.; DUBOIS, R.; FAVUZZI, C.; J. FEGAN, S.; C. FERRARA, E.; FORTIN, P.; FUKAZAWA, Y.; FUSCO, P.; GARGANO, F.; GERMANI, S.; GIGLIETTO, N.; GIORDANO, F.; GIROLETTI, M.; GLANZMAN, T.; GODFREY, G.; GRILLO, L.; E. GROVE, J.; GRUBER, D.; GUIRIEC, S.; HADASCH, D.; HAYASHIDA, M.; HAYS, E.; HORAN, D.; IAFRATE, G.; JÓHANNESSON, G.; S. JOHNSON, A.; N. JOHNSON, W.; KAMAE, T.; M. KIPPEN, R.; KNÖDLSEDER, Jürgen; KUSS, M.; LANDE, J.; LATRONICO, L.; LONGO, F.; LOPARCO, F.; LOTT, B.; N. LOVELLETTE, M.; LUBRANO, P.; N. MAZZIOTTA, M.; E. MCENERY, J.; MEEGAN, C.; MEHAULT, J.; F. MICHELSON, P.; MITTHUMSIRI, W.; MONTE, C.; E. MONZANI, M.; MORSELLI, A.; V. MOSKALENKO, I.; MURGIA, S.; MURPHY, R.; NAUMANN-GODO, M.; NUSS, E.; NYMARK, T.; OHNO, M.; OHSUGI, T.; OKUMURA, A.; OMODEI, N.; ORLANDO, E.; S. PACIESAS, W.; H. PANETTA, J.; PARENT, D.; PESCE-ROLLINS, M.; PETROSIAN, V.; PIERBATTISTA, M.; PIRON, F.; PIVATO, G.; POON, H.; PORTER, T.A.; PREECE, R.; RAINÒ, S.; RANDO, R.; RAZZANO, M.; RAZZAQUE, S.; REIMER, A.; REIMER, O.; RITZ, S.; SBARRA, C.; A SCHWARTZ, R.; SGRÒ, C.; H. SHARE, G.; J. SISKIND, E.; SPINELLI, P.; TAKAHASHI, H.; TANAKA, T.; TANAKA, Y.; B. THAYER, J.; TIBALDO, L.; TINIVELLA, M.; K. TOLBERT, A.; TOSTI, G.; TROJA, E.; UCHIYAMA, Y.; L. USHER, T.; VANDENBROUCKE, J.; VASILEIOU, V.; VIANELLO, G.; VITALE, V.; VON KIENLIN, A.; P. WAITE, A.; WILSON-HODGE, C.; L. WOOD, D.; S. WOOD, K.; YANG, Z.

doi:10.1088/0004-637X/745/2/144

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The Astrophysical Journal. 2012, vol. 745, p. 144

American Astronomical Society

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The Geostationary Operational Environmental Satellite (GOES) M2-class solar flare, SOL2010-06-12T00:57, was modest in many respects yet exhibited remarkable acceleration of energetic particles. The flare produced an ~50 s impulsive burst of hard X- and γ-ray emission up to at least 400 MeV observed by the Fermi Gamma-ray Burst Monitor and Large Area Telescope experiments. The remarkably similar hard X-ray and high-energy γ-ray time profiles suggest that most of the particles were accelerated to energies gsim300 MeV with a delay of ~10 s from mildly relativistic electrons, but some reached these energies in as little as ~3 s. The γ-ray line fluence from this flare was about 10 times higher than that typically observed from this modest GOES class of X-ray flare. There is no evidence for time-extended >100 MeV emission as has been found for other flares with high-energy γ-rays.< Réduire

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acceleration of particles

Sun: flares

Sun: particle emission

Sun: X-rays

gamma rays

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Fermi Detection of γ-Ray Emission from the M2 Soft X-Ray Flare on 2010 June 12

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