Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T16:56:38.636Z Has data issue: false hasContentIssue false
  • English
  • Français

On Proton and Electron Acceleration by Shock Waves during Large Solar Flares

Published online by Cambridge University Press:  25 April 2016

V. M. Gubchenko  and
V. V. Zaitsev
V. M. Gubchenko
Affiliation:
Applied Physics Institute, Gorky, USSR
V. V. Zaitsev
Affiliation:
Applied Physics Institute, Gorky, USSR
Get access Rights & Permissions [Opens in a new window]

Extract

Lin and Hudson (1976) have recently analysed non-thermal processes in proton flares, using observations of a series of major events in August 1972. They concluded that the 10–100 keV electrons accelerated during the flash phase account for the bulk of the total energy of a large proton flare (about 1032 – 1033 ergs); that most protons are accelerated later than the 10 — 100 keV electrons; and that most energetic protons escape to the interplanetary medium. Their conclusions with regard to proton acceleration are supported firstly by the delay of the maximum of γ-ray emission by 3-5 minutes after the maximum of X-ray emission, and secondly by the satisfactory agreement between the 7-ray spectrum and the thin-target model of emission. The energetic protons contain a very small fraction of the total flare energy (of the order of 10-5).

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 3 , Issue 3 , 1978 , pp. 236 - 238
Copyright
Copyright © Astronomical Society of Australia 1978

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Dum, C., Chodura, R., and Biscamp, D., Phys. Rev. Lett., 32, 1231 (1974).CrossRefGoogle Scholar
Gaponov, A. V., and Miller, M. A., Zh. E.T.P., 34, 242 (in Russian), (1958).Google Scholar
Gubchenko, V. M., and Zaitsev, V. V. (submitted to Solar Phys.), (1978).Google Scholar
Lin, R., and Hudson, H. S., Solar Phys., 50, 153 (1976).CrossRefGoogle Scholar
Sagdeev, R. Z., Voprosy Teorii Plazmy, ed. M. A. Leontovich, 4, 20 (in Russian); English translation Reviews of Plasma Physics, 4, 23 (Consultants Bureau, New York, N.Y., 1966) (1964).Google Scholar
Svestka, Z., Flares, Solar, D. Reidel Publ. Co., Dordrecht-Holland/Boston, U.S.A. (1976).Google Scholar
Vekshtein, G. E., Ryntov, D. D., and Sagdeev, R. Z., Pis’ma Zh. E.T.P., 12, 419 (in Russian), (1970).Google Scholar