The dynamical coupling of cosmic rays and magnetic field in galactic disks

被引：0

作者：

M. Hanasz

H. Lesch

机构：

[1] Nicholas Copernicus University PL-87-148 Piwnice/Toruń,Centre for Astronomy

[2] University Observatory,undefined

来源：

Astrophysics and Space Science | 2002年 / 281卷

关键词：

Interstellar medium; magnetic field; cosmic rays;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this paper we demonstrate the importance of cosmic rays for the dynamics of the interstellar medium. We present the first 3D-MHD numerical simulations of the Parker instability triggered by cosmic rays accelerated in supernova remnants. We show that in the presence of galactic rotation a net radial magnetic field is produced as a result of the cosmic ray injection. This process provides a very efficient magnetic field amplification within the general frame of so called fast galactic dynamo proposed by Parker (1992).

引用

页码：289 / 292

页数：3

共 50 条

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