STUDY OF SOLAR FLARE MECHANISM AND ITS APPLICATION TO GAMMA RAY BURSTS

本研究的目的是通过研究太阳耀斑重联及其相关的物质抛射和粒子加速的基本机制，阐明太阳耀斑的能量释放机制，并将太阳耀斑机制应用于宇宙耀斑和伽马射线暴。主要研究成果如下：1)基于磁重联模型的耀斑硬x射线与H α图像表观差异解释。2)发现与耀斑硬x射线爆发有关的下流。3) H α和x射线同时观测莫尔顿波。4)发现与莫尔顿波相关的x射线膨胀特征（首次发现日冕快模激波的三维结构）。5)用MHD模拟方法模拟EIT波和Moreton波。6)大型街机快慢冲击的识别。7)重接流入的MHD建模。8)日冕加热与纳米耀斑的非线性Alfven波模型。9)发现日冕的“黎明-黄昏不对称性”。10)辐射测量-巨冠拱廊温度分析及耀斑/拱廊回路长度标度规律测试。11)太阳/恒星耀斑和日冕的“HR图”。12)吸积盘日冕重联加热模型。作为伽马射线暴模型的坍缩的广义相对论MHD模拟。14)日冕物质抛射/耀斑的对数正态分布与伽马暴新模型。

The purpose of this research is to clarify energy release mechanism of solar flares, by examining basic mechanism of reconnection and associated mass ejections and particle acceleration, and to apply solar flare mechanism to cosmic flares and gamma ray bursts. Main research results are as follows. 1)Explanation of apparent difference between hard X-rays and H alpha images of flares based on magnetic reconnection model. 2)Discovery of downflow associated with hard X-ray bursts of flares. 3)Simultaneous observation of Moreton wave with H alpha and X-rays. 4)Discovery of X-ray expanding features associated with Moreton wave (first discovery of 3D structure of coronal fast mode shock). 5)Modeling of EIT wave and Moreton wave with MHD simulations. 6)Identification of fast and slow shocks in giant arcade. 7)MHD modeling of reconnection inflow. 8)Nonlinear Alfven wave model of coronal heating and nanoflares. 9)Discovery of "dawn-dusk asymmetry" in the solar corona. 10)Emission measure -temperature analysis of giant coronal arcade and test of flare/arcade loop length scaling law. 11)"HR diagram" of solar/stellar flares and coronae. 12)Reconnection heating model of accretion disk corona. 13)General relativistic MHD simulation of collapsars as a model of gamma ray bursts. 14)Log-normal distribution of CME/flare and new model of gamma ray bursts.