Galactic dynamo simulations

被引：0
|
作者：
Elstner, Detlef [1 ]
Gressel, Oliver [1 ]
Ruediger, Guenther [1 ]
机构：
[1] Astrophys Inst Potsdam, D-14482 Potsdam, Germany
来源：
COSMIC MAGNETIC FIELDS: FROM PLANETS, TO STARS AND GALAXIES | 2009年 / 259期
关键词：
ISM: magnetic fields; galaxies: magnetic fields; MAGNETIC SPIRAL ARMS; BARRED GALAXIES; MAGNETOROTATIONAL INSTABILITY; FIELDS; DRIVEN; TURBULENCE; DISKS; SUPERNOVAE; STABILITY; SHEAR;
D O I：
10.1017/S1743921309031135
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recent simulations of supernova-driven turbulence within the ISM support the existence of a large-scale dynamo. With a growth time of about two hundred million years, the dynamo is quite fast - in contradiction to many assertions in the literature. We here present details oil the scaling of the dynamo effect. within the simulations and discuss global mean-field models based on the adopted turbulence coefficients. The results are compared to global simulations of the magneto-rotational instability.
引用
收藏
页码：467 / 478
页数：12
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