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Gamma-Ray Precursors of Solar Flares

Published online by Cambridge University Press:  12 April 2016

E. Rieger
E. Rieger*
Affiliation:
Max-Planck-Institut für Extraterrestrische Physik, 8046 Garching, Germany

Abstract

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Bursts have been observed by the gamma-ray spectrometer on SMM at medium- and high-energy gamma-rays that precede the flare maximum. The negligible contribution of nuclear lines in the spectra of these events and their impulsive appearance suggests that they are hard-electron-dominated events superposed on the flares. Spatial resolution at gamma-ray energies will be necessary to decide whether this kind of bursts is cospatial with the flares or whether they occur in the flares’ vicinity.

Subject headings: Sun: flares — Sun: X-rays, gamma rays

Type
Solar Flares
Information
International Astronomical Union Colloquium , Volume 142: Particle Acceleration Phenomena in Astrophysical Plasmas , 1994 , pp. 645 - 648
Copyright
Copyright © The American Astronomical Society 1994

References

Bai, T., & Dennis, B.R. 1985, ApJ, 292, 699 CrossRefGoogle Scholar
Bai, T., & Ramaty, R. 1979, ApJ, 227, 1072 CrossRefGoogle Scholar
Chupp, E.L. 1990a, ApJS, 73, 213 CrossRefGoogle Scholar
Chupp, E.L. 1990b, Science, 250, 229 CrossRefGoogle Scholar
Forrest, D.J., & Chupp, E.L. 1983, Nature, 305, 291 CrossRefGoogle Scholar
Hulot, E., Vilmer, N., Chupp, E.L., Dennis, B.R., & Kane, S.R. 1992 A&A, 256, 273 Google Scholar
Hulot, E., Vilmer, N., & Trottet, G. 1989, A&A, 213, 383 Google Scholar
Kane, S.R., Chupp, E.L., Forrest, D.J., Share, G.H., & Rieger, E. 1986, ApJL, 300, L 95 CrossRefGoogle Scholar
Marschhäuser, H. 1993, Ph.D. thesis, Ludwigs-Maximilians-Universität, München Google Scholar
Pelaez, F., et al. 1992, Sol. Phys., 140, 121 CrossRefGoogle Scholar
Preliminary Report and Forecast of Solar Geophysical Data. 1981, PRF320 (Boulder: NOAA)Google Scholar
Preliminary Report and Forecast of Solar Geophysical Data. 1982, PRF353 (Boulder: NOAA)Google Scholar
Preliminary Report and Forecast of Solar Geophysical Data. 1983, PRF401 (Boulder: NOAA)Google Scholar
Rieger, E. 1982, in Proc. Hinotori Symp. on Solar Flares, ed. Tanaka, Y. Tokyo Inst. Space Astronautical Sci. 246 Google Scholar
Rieger, E. 1989, Sol. Phys., 121, 323 CrossRefGoogle Scholar
Rieger, E. 1991, in IAU Colloq. 133, Lecture Notes in Physics, vol. 399, Eruptive Solar Flares, ed. Svestka, Z., Jackson, B.V., & Machado, M. E., (Berlin: Springer), 161 CrossRefGoogle Scholar
Rieger, E., & Marschhäuser, H. 1990, in Proc. of MAX 91 Workshop 3, ed. Winglee, R.M. & Kiplinger, A.L. (Boulder: Univ. of Colorado) 68 Google Scholar
Rieger, E., Reppin, C., Kanbach, G., Forrest, D.J., Chupp, E.L., & Share, G.H. 1982, in Accreting Neutron Stars, MPE Rep 177, ed. Brinkmann, W. & Trümper, J. (München: MPE), 229 Google Scholar
Share, G.H., Matz, S.M., Messina, D.C., Nolan, P.L., Chupp, E.L., Forrest, D.J., & Cooper, J.F. 1986, Adv. Space Res., 6 (No. 4), 15 CrossRefGoogle Scholar
Share, G.H., Messina, D.C., Iadicicco, A., Matz, S.M., Rieger, E., & Forrest, D.J. 1991, in Gamma-Ray Bursts: Observation, Analysis, and Theories, ed. Ho, C., Fenimore, E., & Epstein, R. (Cambridge Univ. Press), 249 Google Scholar
Vestrand, W.T., Forrest, D.J., Chupp, E.L., Rieger, E., & Share, G.H. 1987, ApJ, 322, 1010 CrossRefGoogle Scholar
Vilmer, N. 1993, ApJS, 000, 000Google Scholar
Vilmer, N., Kane, S.R., & Trottet, G. 1982, A&A, 108, 306 Google Scholar
Vlahos, L., Machado, M.E., Ramaty, R., Murphy, R.J., et al. 1986, in Energetic Phenomena on the Sun, ed. Kundu, M. & Woodgate, B. (NASA CP 2439), 2–1 Google Scholar
Yoshimori, M. 1990, ApJS, 73, 227 CrossRefGoogle Scholar
Yoshimori, M. 1993, ApJS, 00Google Scholar
Yoshimori, M., Okudaira, K., Hirasima, Y., & Kondo, I. 1983, Sol. Phys., 86, 375 CrossRefGoogle Scholar
Yoshimori, M., Okudaira, K., & Yanagimachi, T. 1986, J. Phys. Soc. Japan, 55, No. 10, 3683 CrossRefGoogle Scholar
Yoshimori, M., Takai, Y., Morimoto, K., Suga, K., & Ohki, K. 1993, PASJ, 44, L107 Google Scholar