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 similar to 50 s impulsive burst of hard X-and gamma-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 gamma-ray time profiles suggest that most of the particles were accelerated to energies greater than or similar to 300 MeV with a delay of similar to 10 s from mildly relativistic electrons, but some reached these energies in as little as similar to 3 s. The gamma-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 gamma-rays.

Fermi detection of γ-ray emission from the M2 soft x-ray flare on 2010 June 12 / Ackermann, M., Ajello, M., Allafort, A., Atwood, W.B., Baldini, L., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bhat, P.N., Blandford, R.D., Bonamente, E., Borgland, A.W., Bregeon, J., Briggs, M.S., Brigida, M., Bruel, P., Buehler, R., Burgess, J.M., Buson, S., et al.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 745:2(2012). [10.1088/0004-637X/745/2/144]

Fermi detection of γ-ray emission from the M2 soft x-ray flare on 2010 June 12

FAVUZZI, Cecilia;GIGLIETTO, Nicola;
2012

Abstract

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 similar to 50 s impulsive burst of hard X-and gamma-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 gamma-ray time profiles suggest that most of the particles were accelerated to energies greater than or similar to 300 MeV with a delay of similar to 10 s from mildly relativistic electrons, but some reached these energies in as little as similar to 3 s. The gamma-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 gamma-rays.
2012
Fermi detection of γ-ray emission from the M2 soft x-ray flare on 2010 June 12 / Ackermann, M., Ajello, M., Allafort, A., Atwood, W.B., Baldini, L., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bhat, P.N., Blandford, R.D., Bonamente, E., Borgland, A.W., Bregeon, J., Briggs, M.S., Brigida, M., Bruel, P., Buehler, R., Burgess, J.M., Buson, S., et al.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 745:2(2012). [10.1088/0004-637X/745/2/144]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/52087
Citazioni
  • Scopus 77
  • ???jsp.display-item.citation.isi??? 67
social impact