Physics of ion acceleration in the solar flare on 2005 September 7 determines γ-ray and neutron production
| Autor: | J. F. Valdés-Galicia, Luis Xavier Gonzalez, Gerald H. Share, T. Sakai, H. Tokuno, N. Martinic, P. Miranda, M. J. Harris, Yutaka Matsubara, R. Ticona, A. Hurtado, Takashi Sako, O. Musalem, Shoichi Ogio, Shoichi Shibata, Robert P. Lin, Yasushi Muraki, Ronald J. Murphy, Fumio Kakimoto, A. Velarde, Yoshiki Tsunesada, Säm Krucker, M. Gros, Kyoko Watanabe |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Physics
Atmospheric Science Solar flare Solar energetic particles Neutron emission Astrophysics::High Energy Astrophysical Phenomena Gamma ray Aerospace Engineering Astronomy and Astrophysics Cosmic ray Astrophysics law.invention Nuclear physics Geophysics Space and Planetary Science law Physics::Space Physics Solar particle event Astrophysics::Solar and Stellar Astrophysics General Earth and Planetary Sciences Neutron Flare |
| Zdroj: | Advances in Space Research. 44(No. 7):789-793 |
| Popis: | Relativistic neutrons were observed by the neutron monitors at Mt. Chacaltaya and Mexico City and by the solar neutron telescopes at Chacaltaya and Mt. Sierra Negra in association with an X17.0 flare on 2005 September 7. The neutron signal continued for more than 20 min with high statistical significance. Intense emissions of γ -rays were also registered by INTEGRAL , and during the decay phase by RHESSI . We analyzed these data using the solar-flare magnetic-loop transport and interaction model of Hua et al. [Hua, X.-M., Kozlovsky, B., Lingenfelter, R.E. et al. Angular and energy-dependent neutron emission from solar flare magnetic loops, Astrophys. J. Suppl. Ser. 140, 563–579, 2002], and found that the model could successfully fit the data with intermediate values of loop magnetic convergence and pitch-angle scattering parameters. These results indicate that solar neutrons were produced at the same time as the γ -ray line emission and that ions were continuously accelerated at the emission site. |
| Databáze: | OpenAIRE |
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