TURBULENTLY GENERATED MAGNETIC-FIELDS IN CLUSTERS OF GALAXIES

被引:39
作者
GOLDMAN, I
REPHAELI, Y
机构
[1] Raymond Beverly Sackler Fac. E., School of Physics and Astronomy, Tel Aviv University
关键词
GALAXIES; CLUSTERING; INTERGALACTIC MEDIUM; MAGNETIC FIELDS; TURBULENCE;
D O I
10.1086/170593
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The typical scale and velocity of the dominant, turbulent eddies excited by the motion of galaxies in clusters are determined from basic considerations which are valid if a steady state is attained. Hydrodynamic turbulence in the intracluster plasma presumably generates magnetic fields; our estimates of the typical scale and mean strength of these fields in cluster cores are about 10 kpc and at most a few 10(-7) G. We discuss implications of fields with these properties on the detectability of diffuse hard X-ray emission from clusters, and on transport properties in the intracluster space.
引用
收藏
页码:344 / 350
页数:7
相关论文
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