Anisotropic inverse Compton emission in the radio galaxy 3C 265
Anisotropic inverse Compton emission in the radio galaxy 3C 265
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射电星系 3C 265 中的各向异性逆康普顿发射
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
G. Setti
中科院分区：
文献类型：
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作者：
M. Bondi;G. Brunetti;A. Comastri;G. Setti
我们展示了钱德拉对强大射电星系 3C 265 的观测结果。我们检测到来自原子核、射电热点和裂片的 X 射线发射。特别是，波瓣 X 射线发射可以很好地解释为射电波瓣中相对论性电子对核光子的各向异性逆康普顿散射；无线电同步加速器和 IC 发射之间的比较得出的磁场强度比最小能量条件下计算的磁场强度低 ≃ 2 倍。原子核的 X 射线光谱与强大的强吸收类星体的 X 射线光谱一致，假设磁场略低于均分，则可以通过同步自康普顿发射和逆康普顿发射的组合成功地再现东南热点的 X 射线发射。
We present the results from a Chandra observation of the powerful radio galaxy 3C 265. We detect X-ray emission from the nucleus, the radio hotspots and lobes. In particular, the lobe X-ray emission is well explained as anisotropic inverse Compton scattering of the nuclear photons by the relativistic electrons in the radio lobes; the comparison between radio synchrotron and IC emission yields a magnetic field strength a factor ≃ 2 lower than that calculated under minimum energy conditions. The X-ray spectrum of the nucleus is consistent with that of a powerful, strongly absorbed quasar and the X-ray emission of the south-eastern hotspot can be successfully reproduced by a combination of synchro-self Compton and inverse Compton emission assuming a magnetic field slightly lower than equipartition.