VLA OBSERVATIONS OF 3C 295 - A YOUNG RADIO GALAXY

被引：141

作者：

PERLEY, RA ^{[1
]}

TAYLOR, GB ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

来源：

ASTRONOMICAL JOURNAL | 1991年 / 101卷 / 05期

关键词：

D O I：

10.1086/115792

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present VLA observations of the luminous radio galaxy 3C 295 at 2, 3.6, 6, and 20 cm. The combination of its extreme luminosity with small physical size results in a very high energy density and equipartition magnetic field strengths of approximately 500-mu-G. The spectrum is unusually steep for a radio galaxy, and shows curvature at all frequencies. In addition, we find the largest Faraday rotation measures (RMs) yet measured in an extragalactic source, exceeding 20 000 radians m-2 in places. We believe these RMs are caused by cluster gas and magnetic fields of strength approximately 30-mu-G, and are not produced within the source or at its boundary. We suggest that this is a young radio galaxy, less than 2 million years old.

引用

页码：1623 / 1631

页数：9

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