太阳宏观电场测量进展

太阳耀斑爆发时,日冕中磁自由能通过磁重联在短时间内转换成其他形式的能量,并伴随等离子体的加速和加热,以及带电粒子的加速。在这些过程中,宏观电场的出现起到关键的作用。但是到目前为止,由于太阳上宏观电场的探测比较困难,对电场的研究较少。近几年来随着一系列空间探测卫星被投入使用,加深了人们对日地空间事件发生、发展的物理过程的认识。但是太阳爆发和日冕加热机制等磁活动现象没有得到本质上的认识。太阳宏观电场的探测对突破这一瓶颈具有重要作用。综述了国内外在太阳宏观电场测量上的进展,并提出中国巨型望远镜(ChineseGiant Solar Telescope)在宏观电场观测上可能的科学目标。

Advances in Measurement of Solar Macroscopic Electric Fields

The macroscopic electric field plays a central role in solar flares and filament eruptions for magnetic energy conversion to plasma acceleration and heating,and energetic particle acceleration. Their distribution on the Sun is essential for quantitative studies of how energy flows from the Sun's photosphere,through the corona,into the heliosphere.However,so far more efforts have been made to detect the magnetic field on the Sun instead of the electric field.In recent years,with more and more space-exploring...