On structure of coronal mass ejections

Physical mechanisms of coronal mass ejections (CME) have not yet been sufficiently studied. There exist mathematical models, which explain expansion and speed variation of CME, however their internal structure practically was not considered. Possibility of the existence and stability of such equilibrium plasma configuration were not investigated. In this paper, which is a continuation of 2, CME is considered as a magnetic-vortical ring with a cloud of added mass. We study in detail the structure of magnetic-vortical plasmoid taking into account its finite dimensions, density variations, the presence of toroidal magnetic field along with poloidal field, and also influence of solar wind on its dimensions and dynamics. We demonstrate, that magnetic-vortical ring forms an equilibrium plasma configuration having its own speed, whose magnitude depends on the ratio of magnetic energy to kinetic energy, density distribution, magnitude of toroidal magnetic field. Comparison with data of observations is performed. It is demonstrated, that motion of ring and variation of its dimensions, obtained from the model, correspond to observation data. © 2007 by Begell House Inc.