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Impact of magnetic environment on the generation of high-energy neutrons at the sun

Kocharov, L. G. and Torsti, J. and Tang, F. and Zirin, H. and Kovaltsov, G. A. and Usoskin, I. G. (1997) Impact of magnetic environment on the generation of high-energy neutrons at the sun. Solar Physics, 172 (1-2). pp. 271-278. ISSN 0038-0938. doi:10.1023/a:1004986526577.

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This paper demonstrates the important interplanetary manifestation of strongly tilted magnetic fields at the flare site. We start with analysis of Big Bear Solar Observatory (BBSO) observations of magnetic structures at sites of two flares responsible for >100 MeV neutron events. Based on these observations, a model of neutron production is considered. This model takes into account the observed large tilt of magnetic field lines at footpoints of flare magnetic loops. Results of the new calculations are compared with both previous calculations and observations. The tilt of magnetic field lines at the flare site is proved to be the most important parameter limiting anisotropy of high-energy secondary emission in solar flares.

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Additional Information:© 1997 Kluwer Academic Publishers. Received 5 July 1996; accepted 11 October 1996. We thank D. Barat for useful comments on PHEBUS data. The Academy of Finland is thanked for the financial support for the University of Turku. L.K. and F.T. were partially supported by NASA Grant NAG5-2761 (Compton GRO Cycle 4 Guest Investigator Program). G.K. was supported by Scholarship of the Nordic Council of Ministers for research in Finland. BBSO is supported by NASA Grant NAGW-1972, NSF Grant ATM-9525971, and ONR Grant N00014-89-J-1069.
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Nordic Council of MinistersUNSPECIFIED
Office of Naval Research (ONR)N00014-89-J-1069
Subject Keywords:Magnetic Field, Anisotropy, Flare, Magnetic Structure, Solar Flare
Issue or Number:1-2
Record Number:CaltechAUTHORS:20200723-174404300
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Official Citation:Kocharov, L.G., Torsti, J., Tang, F. et al. Impact of Magnetic Environment on the Generation of High-Energy Neutrons at the Sun. Solar Physics 172, 271–278 (1997).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104554
Deposited By: Rebecca Minjarez
Deposited On:28 Jul 2020 20:09
Last Modified:16 Nov 2021 18:32

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