观测表明耀斑中电子加速发生在软x射线耀斑环上方的磁重联区域.在重联电流片中被super-Dreicer电场直接加速似乎是产生能量在10keV—10MeV之间高能电子的最直接的方式.本文的结果证明纵向电磁场可以有效地将电子“锁”在重联电流片上,使得横向电场得以直接加速电子.对于解释产生相对论性粒子的脉冲式耀斑,这可能是一个有效的机制.
Observations show that electron acceleration in solar flares occurs in magnetic reconnection regions above the soft X-ray flare loops in the corona. Acceleration by a super-Dreicer electric field in a reconnecting current sheet appears to be the most direct way of producing electrons in the energy range of lOkeV to IOMeV. The results of this study demonstrate that the longitudinal magnetic field efficiently "locks" electrons in the reconnecting current sheet, thus allowing the acceleration by the transverse electric field. This mechanism may be useful to interpret the generation of relativistic ions in large impulsive flares.