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首页> 外文期刊>The Astrophysical journal >DOUBLE-POWER-LAW ENERGY SPECTRA OF ELECTRONS FROM SOLAR ~3He-RICH EVENTS
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DOUBLE-POWER-LAW ENERGY SPECTRA OF ELECTRONS FROM SOLAR ~3He-RICH EVENTS

机译：约3He富电子事件中电子的双功率法能谱

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摘要

A possible explanation is proposed for the double-power-law energy spectrum of electrons from solar ~3He-rich events. According to the two-stage acceleration model that was developed by Zhang for the heating and acceleration of ions and electrons in solar ~3He-rich events, the energy spectrum of electrons in the thermal to power law energy range is derived. Tt is shown that the electron flux generally includes a thermal component at low energies and a nonthermal component with a power-law spectrum at high energies. To have the double-power-law energy spectrum of electrons at the high energies, three empirical models are proposed in terms of the dependences of the spectral power index, the electron temperature, and the threshold energy on the electron energy. The numerical result obtained by this study for the energy spectrum of electrons at energies ～1-200 keV fits very well with the double-power-law spectrum measurement given by Reames, von Rosenvinge, & Lin.
机译：对于来自富含3He的太阳事件的电子的双幂律能量谱，提出了一种可能的解释。根据Zhang为在太阳〜3He富集事件中离子和电子的加热和加速而开发的两阶段加速模型，得出了热能定律能量范围内电子的能谱。 Tt表明，电子通量通常包括在低能量时的热分量和在高能量时具有幂律谱的非热分量。为了使电子具有高能量的双幂律能谱，根据谱功率指数，电子温度和阈值能量对电子能量的依赖性，提出了三个经验模型。这项研究获得的关于能量为1-200 keV时电子能谱的数值结果与Reames，von Rosenvinge和Lin给出的双幂律谱测量结果非常吻合。

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