Extended X-ray emission around four 3C quasars at 0.55<z<0.75 observed with Chandra

被引:41
作者
Crawford, CS [1 ]
Fabian, AC [1 ]
机构
[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
关键词
galaxies : clusters : general; quasars : general; X-rays : galaxies;
D O I
10.1046/j.1365-8711.2003.06268.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report on the detection of a soft spatially extended component of X-ray emission around four intermediate-redshift 3C quasars observed with Chandra: 3C 254, 3C 263, 3C 275.1 and 3C 281. The bolometric luminosity of this emission ranges over 0.3-1.6 x 10(44) erg s(-1), and extends to length-scales of over 350 kpc at the redshift of the quasar. The X-rays are most likely thermal emission from the intracluster medium of a cluster of galaxies around each quasar, which provides the working surface for the powerful radio lobes. Some X-ray emission is also seen to be associated with the radio plasma.
引用
收藏
页码:1163 / 1169
页数:7
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