Whistlers in the solar corona and their relevance to fine structures of type IV radio emission |
| |
Authors: | G P Chernov |
| |
Institution: | (1) Izmiran, 142092 Troitsk, Moscow Region, U.S.S.R. |
| |
Abstract: | This short report concerns a general consideration of whistler manifestations in fine structures, including possible trajectories of obliquely propagating whistlers, the role of quasilinear diffusion and an interpretation of new observations. A whistler ray tracing and kinetic whistler growth rates under arbitrary angles to the magnetic field in the solar corona were calculated. Different regimes of a whistler instability yield divers elements of fine structures: different stripes in emission and absorption or millisecond pulsations, moreover, zebra-stripes can convert into fiber bursts and inversely. A new explanation of low-frequency absorption in fibers is proposed: it is connected with an attenuation of plasma-wave instability due to the fast electron diffusion by whistlers. Rope-like chains of fiber bursts are explained by a periodic whistler instability in a magnetic reconnection region. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|