The dynamics of the giant radio galaxy 3C 457
The dynamics of the giant radio galaxy 3C 457
复制标题
巨型射电星系3C 457的动力学
DOI：
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Australia.
中科院分区：
文献类型：
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作者：
C. Konar;M. Hardcastle;J. Croston;D. J. S. Iucaa;Pune;India.;U. Hertfordshire;Hatfield;UK.;U. Southampton;Southampton;Ncra;Tifr;Atnf;Csiro;Marsfield;Australia.
我们目前的多频射电观测与巨型米波射电望远镜和甚大阵，X射线观测与X射线多镜使命（XMM-牛顿）望远镜的巨型射电源（GRS）3C 457。利用X射线探测了大射电暴的核、叶和环境。我们检查无线电和X射线发射之间的关系，确定在一个大的频率范围内的无线电频谱和属性的X射线发射从瓣宇宙微波背景光子的逆康普顿散射。波瓣的磁场强度非常接近均分值。两个凸起在热点附近处于压力平衡状态，并且明显地向核心低压。GRS核心的X射线光谱由未吸收的软幂律成分和被严重吸收的硬幂律成分组成。未被吸收的软成分可能与射电喷流有关。在我们的实验数据中没有发现Fe Kα发射线的强有力证据。
We present multifrequency radio observations with the Giant Metrewave Radio Telescope and Very Large Array, and X-ray observations with the X-ray Multi-Mirror Mission (XMM-Newton) telescope of the giant radio source (GRS) 3C 457. We have detected the core, lobes and the environment of the GRS in X-ray. We examine the relationships between the radio and X-ray emission, determine the radio spectrum over a large frequency range and attribute the X-ray emission from the lobes to the inverse Compton scattering of cosmic microwave background photons. The magnetic field strength of the lobes is very close to the equipartition value. Both the lobes are in pressure balance near the hotspots and apparently underpressured towards the core. The X-ray spectrum of the core of the GRS consists of an unabsorbed soft power-law component and a heavily absorbed hard power-law component. The soft unabsorbed component is likely to be related to the radio jets. There is no strong evidence of Fe Kα emission line in our data.
DOI：
10.1111/j.1365-2966.2008.13162.x
发表时间：
2008-02
影响因子：
4.8
作者：
J. Croston;M. Hardcastle;M. Birkinshaw;D. Worrall;R. Laing
通讯作者：
J. Croston;M. Hardcastle;M. Birkinshaw;D. Worrall;R. Laing