太阳射电IV型爆发及伴随现象与白光耀斑的关系  

The Relation between Type IV Solar Radio Bursts and Associated Phenomena and White Light Flares

作　　者：谢瑞祥[1] 汪敏[1] 

机构地区：[1]中国科学院云南天文台,昆明650011

出　　处：《天体物理学报》2000年第1期74-84,共11页

基　　金：中国科学院天文委员会资助

摘　　要：通过1991年6月6日共生太阳白光耀斑（WLF）的射电运动IV型爆发及其伴随现象（包括耀斑后环、爆发衰减相的射电脉动、多波段射电辐射和太阳物质抛射等）观测资料的分析，定性地探讨了WLF的起源、加热机制和发射地点的问题．假设了WLF和射电运动IV型射电爆发可能有共同起源的低日冕电子加速区，讨论了WLF的能量传输可能是通过二步加速过程，即来自低日冕的非热电子沉降能量于色球层，产生色球层的压缩波或向下的辐射场进而使上光球层温度增加导致WLF此外，提出WLF可能会伴有耀斑后环和射电精细结构的对应物．Based on a qualitative analysis of the data of the type IV radio burst and accompanying phenomena (post flare loops, radio pulsation in the decaying phase, multi-band emissions and mass ejection etc.) associated with the white light flare (WLF) of 1991 June 6, it is proposed that the WLF and radio burst come from the same electron accelerating area in the low corona. The energy transfer of the WLF may be a two-step process, the energy of nonthermal electrons from the corona is precipitated in the chromosphere, producing compression waves or a downward radiative field, and then the temperature of the upper photosphere is increased and the WLF is initiated. Moreover, the post-flare loops and radio fine structures may be the counterparts of the WLF.

关 键 词：太阳射电爆发 白光耀斑 耀斑后环 

分 类 号：P182.52[天文地球—天文学]