Simultaneous acceleration of electrons and ions in solar flares
Simultaneous acceleration of electrons and ions in solar flares
复制标题
太阳耀斑中电子和离子的同时加速
作者：
D. Forrest;E. Chupp
1980 年 6 月 7 日至 21 日，观测到两次非常强烈的脉冲核 γ 射线和电子轫致辐射 X 射线发射的太阳耀斑，其时间分辨率小于 2 秒。这些观测使我们能够首次研究高能离子和电子与太阳大气相互作用的相对起始时间。 X 射线 >40 keV 和 γ 射线发射的同时启动时间表明电子和离子在几秒钟内彼此加速。几乎同时的峰值，加上对 >400 MeV 中子的观测，表明太阳耀斑加速过程可以在 <5 s 的时间尺度内产生电子 (>1 MeV) 和离子 (>102 MeV) 的完整强度和光谱。这些结果与广泛接受的太阳耀斑粒子加速概念直接矛盾。
Two very intense and impulsive nuclear γ-ray and electron bremsstrahlung X-ray emitting solar flares, on 7 and 21 June 1980, were observed with <2 s time resolution. These observations have allowed us to study, for the first time, the relative starting times of energetic ion and electron interactions with the solar atmosphere. The simultaneous starting times of X rays >40 keV and γ-ray emission show that electrons and ions were accelerated within seconds of each other. The near simultaneous peaking, together with the observation of >400-MeV neutrons, show that the solar flare acceleration process can produce the full intensity and spectrum of electrons (>1 MeV) and ions (>102 MeV) in a time scale of <5 s. These results are in direct contradiction to the widely accepted concept of solar flare particle acceleration.