AbstractThe energy content of nonthermal particles in solar flares is shared between accelerated electrons and ions. It isimportant for understanding the particle acceleration mechanism in solar flares. Yohkoh observed a few intense flares which produced both strong gamma-ray lines and electron bremsstrahlung continuum. We analyze energy spectra of X-class solar flares on October 27, 1991(X6.1), November 6, 1997 (X9.4), July 14, 2000 (X5.7) and November 24, 2000 (X2.3). The accelerated electron and proton spectra are derived from a spectral analysis of their high-energy photon emission and the energy contents in >1 MeV electrons and >10 MeV protons are estimated to be 6×l028 – 4×1030 and 2×1028 – 5×1029 erg, respectively. We study the flare to flare variation in the energy content of >1 MeV electrons and >10 MeV protons for the four Yohkoh gamma-ray flares. Ratios of >1 MeV electron energy content to >10 MeV proton energy content are roughly within an order of magnitude.


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    Titel :

    Energy content of accelerated electrons and ions in intense solar flares


    Beteiligte:
    Yoshimori, M. (Autor:in) / Hirayama, H. (Autor:in) / Mori, S. (Autor:in) / Share, G.H. (Autor:in) / Murphy, R.J. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 32 , 12 ; 2465-2470


    Erscheinungsdatum :

    2003-07-10


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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