太阳耀斑磁环动力学研究进展

Progress in Dynamic Research of Solar Flare Magnetic Loops

讨论了磁环（电流环）在耀斑的贮能和释能过程中的重要作用。贮存于环中的磁能可能通过两种方式经由磁重联而散逸，即磁环的相互作用和环的扭转，并给出一些观测证据和理论分析结果。

In this review the important role of magnetic loops (current loops) in energy storageand release process of soalr fiares is discussed. The observations by the Solar MaximumMission showed that the interaction of magnetic loops is an essential ingredient in thetriggering of the solar flares. Recent observaions have revealed that occasional transientenhancements in soft X- ray and visible light images are related to loop interactions inactive regions of solar flares. Observations with the VLA operating at 6cm, 2cm havealso provided evidences of interacting loops. Theoretical analyses have indicated thatthe magnetic energy stored in the loops may be dissipated through two ways: loop- loopinteractions and loop twists. The current loop coalescence is one of the main loop-loop interactions, which can rapidly dissipate magnetic energy through the explosivemagnetic field line reconnection in the region betweervo current loops. The currentloop coalescence may also occur in one current loop through the nonlinear kink instability.Some research results are given.