日冕物质抛射和射电爆发

CORONAL MASS EJECTIONS AND SOLAR RADIO BURSTS

日冕物质抛射（ＣＭＥ） 是一个极为复杂的动力学过程本文基于开放场、闭合场的物理条件及射电爆发理论， 研究了ＣＭＥｓ 与相伴随的射电Ⅱ型、Ⅲ型、Ⅳ型爆发、软χ射线增强及太阳耀斑的关系给出了它们相伴随的条件： 当磁通量喷发， 能量释放时， 等离子体将被加速如果加速区在开放场， 可能会产生Ⅲ型爆发； 如果是闭合场， 被加速的高能质子和高能电子将被磁环捕获高能质子在磁环腿部呈损失锥分布， 当Ｅ≥ＥＴ 时会产生软χ射线增强随着磁环内的热压Ｐ和磁压Ｐｍ 的升高， 当β≥βＴ 时， 磁环将炸裂， 产生ＣＭＥｓ抛射出的高能相对论电子绕开放场线作螺旋飞行时， 会产生Ⅳ型爆发； 而亚相对论电子以零入射角沿开放磁场线逃逸时， 会产生Ⅲ型爆发高速飞行的等离子体产生激波时， 会产生Ⅱ型爆发当ＣＭＥｓ 源接近耀斑时，

CMEs are a very complicated dynamical process On the basis of the open and closed magnetic field and of the radio radiation theory,the relations between CMEs and associated radio burst and solar flare are studied in this paper When magnetic flux is injected and magnetic energy is released,the plasma in CME region will be accelerated If the accelerated region is open magnetic field,Type Ⅲ burst may be generated If it is closed,the accelerated energetic protons and electrons are trapped in a large magnetic loop The energetic protons present loss cone distribution in the loop leges When E≥E T ,soft X-ray enhancement can occur With the growth of heat pressure P and magnetic prossure P m  in the magnetic loop which later breaks open,when β≥β T as CME Ejected energetic relativistic electrons travelling in spirals round open field line can generate Type Ⅳ burst Subrelativistic electrons which escape along open field line with incident angle of zero can appear Type Ⅲ burst When shock wave are engendered by high-speed plasma,Type Ⅱ burst can produce If CME source is close by a flare region,the flare can be triggered