Numerical Simulation for the 16 August 1999 EUV Brightenings
- 出版年：2008
- 作者：SHA Xiaoming；FAN Quanlin
- 单位1：State Key Laboratory of Space Weather, Center for Space Science and Applied Research,Chinese Academy of Sciences
- 单位2：Graduate University of Chinese Academy of Sciences
- 语种：中文
- 作者关键词：Explosive events；Magnetic reconnection；Coalescence instability；EUV brightenings；Bi-directional reconnection jets
- 起始页：507
- 总页数：6
- 刊名：空间科学学报
- 是否内版：否
- 刊频：双月刊
- 创刊时间：1981
- 主管单位：中国科学院
- 主办单位：中国科学院空间科学与应用研究中心；中国空间科学学会
- 主编：肖佐
- 卷：28
- 期：6
- 期刊索取号：P280.66326
摘要
The 16 August 1999 EUV brightenings are numerically simulated by a third-order upwindcompact scheme, basing on the TRACE observation. The present simulation can give a possibleexplanation to its formation and evolution. The numerical results show that the initial reconnectionjets at around X-point are responsible for the occurrence of EUV brightening. The strong andsuperposed ejections caused by the first and second coalescence of magnetic islands are possiblyrelated to the lifted material which initially appeared as absorption features and Later EUV-emittingstructures respectively. The bi-directional reconnection jets may correspond to the lifted materialthat either continued to move upward along the apparently open field lines or fell down to the surface.