Loop models of solar flares: Revisions and comparisons |
| |
| Authors: | D S Spicer |
| |
| Institution: | (1) E. O. Hulburt Center for Space Research, U.S. Naval Research Laboratory, 20735 Washington, D.C., U.S.A. |
| |
| Abstract: | Due to developments in solar flare observations which appear to show that a particular class of solar flares result from instabilities occurring in magnetic loops we re-examine the Alfvén-Carlqvist flare model to show that it is workable and we update the Spicer loop model of a flare. It is noted that the Alfvén-Carlqvist model of necessity requires an external current driver which must maintain the current driven instability at marginal stability during the duration of the flare. In addition, it is argued that if the Alfvén-Carlqvist model is to work the current density must rise in a time shorter than an MHD or resistive tearing mode time scale. Otherwise, the dominant flare mechanism must be an ideal MHD or tearing type instability. Further, the distinctions between the two models are highlighted and a new hybrid model of the Alfvén-Carlqvist and Spicer models is introduced. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
