一个超级活动区在爆发事件前的感应电场、电流和能流分布  

Induction Electric Field,Vertical Component of Current and Non-potential Magnetic Energy of a Super Active Region

作　　者：刘继宏[1,2] 郝普[1] 马志春[1] 东艳晖[1] 封顺珍 张彩霞[1] 

机构地区：[1]石家庄学院物理系,河北石家庄050035 [2]中国科学院太阳活动重点实验室,北京100012

出　　处：《河北师范大学学报（自然科学版）》2010年第4期434-437,共4页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金(40804033);河北省自然科学基金(A2009000251A2010001942);石家庄市科学技术研究与发展指导计划课题(09155821);中国科学院太阳活动重点实验室开放课题(KLSA2010-06);河北省新型薄膜材料重点实验室开放课题;石家庄学院博士基金;石家庄学院科研启动基金

摘　　要：以超级非势活动区NOAA 10486为例,采用局部相关跟踪法,由光球磁场观测资料研究其感应电场、纵向电流和能流(坡印廷矢量),给出大耀斑爆发之前这些量的分布.研究过程采用局部相关跟踪技术法.由分析可见,爆发事件发生前,光球的磁场运动明显地传输了大量非势磁能到高层大气中.Using the optical flow techniques the induction electric field,vertical component of current and non-potential magnetic energy of a Super Active Region NOAA 10486 have been analyzed.Benefiting from the optical flow techniques,the transverse velocity fields of the magnetic features on the solar surface may be determined by a time sequence of high-quality images currently produced by high-resolution observations either from the ground or in space.Consequently,the induced electric field in the photosphere,and the non-potential magnetic energy（pointing flux）can be acquired.Then it comes to be possible to determine the energy flux across the photosphere,and subsequently to evaluate the energy budget.It is found that the flare relates closely to both the morphology changes of the transverse magnetic field due to surface motion and the effect of the flux emergence.

关 键 词：太阳 磁场 感应电场 非势性 

分 类 号：P182[天文地球—天文学]