A theory of filament eruptions before the impulsive phase of solar flares |
| |
| Authors: | Jun-Ichi Sakai Shinji Koide |
| |
| Institution: | (1) Laboratory for Plasma Astrophysics and Fusion Science, Department of Electronics and Information, Faculty of Engineering, Toyama University, 930 Toyama, Japan |
| |
| Abstract: | We present a theory of filament eruption before the impulsive phase of solar flares. We show that the upward motion of the magnetic X-point tracing the filament eruption begins several minutes before the impulsive phase of the flare, where the explosive magnetic reconnection starts at the X-point magnetic field configuration located under the filament. No change occurs in the character of the motion of the X-point during the onset of the explosive magnetic reconnection. The upward speed of the X-point is about 110 km s-1 at the onset of the impulsive phase. We give an important condition leading to filament eruptions, which relate to the state of the current sheet under the filament, where the magnetic energy can be released. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
