Hydromagnetic stability of coronal arcade structures: The effects of photospheric line tying |
| |
Authors: | Alak Ray Gerard Van Hoven |
| |
Institution: | (1) Department of Physics, University of California, 92717 Irvine, Calif., U.S.A. |
| |
Abstract: | A model is given of the magnetic-field equilibrium and possible dynamic excitations of a solar coronal arcade. Such structures are well observed in the spectral range from H to X-rays and often give rise to two-ribbon flares. However, the preflare state must be stable to ideal magnetohydrodynamic disturbances, and we treat this problem with particular attention to the necessary foot-point boundary conditions. Having devised a reasonably general perturbation set, we use an energy-principle analysis to show the strong stabilizing influence of inertial field-line tying at the photosphere.Address from October 1981: Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400005, India. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|