Authors
Markus Ackermann, Marco Ajello, Andrea Albert, A Allafort, Luca Baldini, Guido Barbiellini, Denis Bastieri, K Bechtol, R Bellazzini, Elisabetta Bissaldi, Emanuele Bonamente, E Bottacini, A Bouvier, TJ Brandt, J Bregeon, M Brigida, Pascal Bruel, R Buehler, Sara Buson, GA Caliandro, RA Cameron, PA Caraveo, Claudia Cecchi, E Charles, A Chekhtman, Q Chen, J Chiang, G Chiaro, S Ciprini, R Claus, J Cohen-Tanugi, Jan Conrad, S Cutini, Filippo D'Ammando, Alessandro de Angelis, F De Palma, CD Dermer, Rachele Desiante, SW Digel, L Di Venere, E do Couto e Silva, PS Drell, A Drlica-Wagner, C Favuzzi, SJ Fegan, WB Focke, A Franckowiak, Y Fukazawa, S Funk, Piergiorgio Fusco, F Gargano, D Gasparrini, S Germani, N Giglietto, Francesco Giordano, M Giroletti, T Glanzman, G Godfrey, IA Grenier, JE Grove, S Guiriec, D Hadasch, M Hayashida, E Hays, D Horan, RE Hughes, Y Inoue, Miranda S Jackson, T Jogler, G Jóhannesson, WN Johnson, T Kamae, T Kawano, J Knödlseder, M Kuss, J Lande, Stefan Larsson, L Latronico, M Lemoine-Goumard, Francesco Longo, Francesco Loparco, B Lott, MN Lovellette, P Lubrano, M Mayer, MN Mazziotta, JE McEnery, PF Michelson, T Mizuno, AA Moiseev, C Monte, ME Monzani, Elena Moretti, A Morselli, IV Moskalenko, S Murgia, R Murphy, R Nemmen, E Nuss, M Ohno, T Ohsugi, A Okumura, N Omodei, M Orienti, E Orlando, JF Ormes, D Paneque, JH Panetta, JS Perkins, M Pesce-Rollins, V Petrosian, F Piron, Giovanna Pivato, TA Porter, Silvia Raino, Riccardo Rando, M Razzano, A Reimer, O Reimer, S Ritz, A Schulz, C Sgrò, EJ Siskind, G Spandre, P Spinelli, H Takahashi, Y Takeuchi, Y Tanaka, JG Thayer, JB Thayer, DJ Thompson, L Tibaldo, M Tinivella, Gino Tosti, E Troja, V Tronconi, TL Usher, J Vandenbroucke, V Vasileiou, G Vianello, V Vitale, M Werner, BL Winer, DL Wood, KS Wood, M Wood, Zhaoyu Yang
Publication date
2014/4/29
Journal
The Astrophysical Journal
Volume
787
Issue
1
Pages
15
Publisher
IOP Publishing
Description
We present the detections of 18 solar flares detected in high-energy γ-rays (above 100 MeV) with the Fermi Large Area Telescope (LAT) during its first 4 yr of operation. This work suggests that particle acceleration up to very high energies in solar flares is more common than previously thought, occurring even in modest flares, and for longer durations. Interestingly, all these flares are associated with fairly fast coronal mass ejections (CMEs). We then describe the detailed temporal, spatial, and spectral characteristics of the first two long-lasting events: the 2011 March 7 flare, a moderate (M3. 7) impulsive flare followed by slowly varying γ-ray emission over 13 hr, and the 2011 June 7 M2. 5 flare, which was followed by γ-ray emission lasting for 2 hr. We compare the Fermi LAT data with X-ray and proton data measurements from GOES and RHESSI. We argue that the γ-rays are more likely produced through pion decay …
Scholar articles
M Ackermann, M Ajello, A Albert, A Allafort, L Baldini… - The Astrophysical Journal, 2014