MAGNETIC-FIELDS IN THE HYDRA-A CLUSTER

被引：159

作者：

TAYLOR, GB ^{[1
]}

PERLEY, RA ^{[1
]}

机构：

[1] NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 416卷 / 02期

关键词：

GALAXIES; CLUSTERS; INDIVIDUAL; (HYDRA-A); INTERGALACTIC MEDIUM; MAGNETIC FIELDS; POLARIZATION;

D O I：

10.1086/173257

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Sensitive, high-resolution VLA polarimetric observations are presented for the radio galaxy Hydra A, an outstanding example of a high-luminosity radio source embedded within a cooling flow cluster. We find extremely high Faraday rotation measures (RMs), throughout the central regions of this source, with a strong asymmetry between the north and south lobes. Simple models for the high RMs are discussed and compared with the observations. To explain the north-south asymmetry in RM requires a magnetic field of strength approximately 6 muG organized over a scale of approximately 100 kpc. On smaller scales we find a tangled magnetic field with a strength of approximately 30 muG.

引用

页码：554 / &

共 37 条

[1] EXTENDED OPTICAL-LINE-EMITTING GAS IN RADIO GALAXIES - BROAD-BAND OPTICAL NARROW-BAND OPTICAL, AND RADIO IMAGING OF A REPRESENTATIVE SAMPLE [J].