X-ray synchrotron emission from the oblique shock in the jet of the powerful radio galaxy 3C 346
X-ray synchrotron emission from the oblique shock in the jet of the powerful radio galaxy 3C 346
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DOI：
10.1111/j.1365-2966.2005.09082.x
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发表时间：
2005-04
影响因子：
4.8
通讯作者：
D. Worrall;M. Birkinshaw
中科院分区：
文献类型：
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作者：
D. Worrall;M. Birkinshaw
我们报告的第一次检测，钱德拉，X射线发射的强大的窄线射电星系3C 346的喷气机。X射线是从明亮的射电和光学结中探测到的，在那里喷流明显弯曲了大约70°。钱德拉的观测还揭示了先前已知的星团内明亮的星系尺度大气，并为3C 346明亮的核心提供了良好的X射线光谱。从结中发射的X射线是同步辐射，就像在低功率源中看到的那样。与这些来源一样，有证据表明射电/光学和X射线结构之间存在形态差异，并且光谱与单组分连续注入模型不一致。我们认为，X射线亮结与中等相对论性的轻喷流中的强斜激波有关，与视线成0.20 °，这种激波是由喷流与伴星系3C 346后面的星团介质中的尾流相互作用引起的。一般的射流曲率可以由星团大气中的压力梯度引起。
We report the first detection, with Chandra, of X-ray emission from the jet of the powerful narrow-line radio galaxy 3C 346. X-rays are detected from the bright radio and optical knot at which the jet apparently bends by approximately 70°. The Chandra observation also reveals a bright galaxy-scale atmosphere within the previously known cluster and provides a good X-ray spectrum for the bright core of 3C 346. The X-ray emission from the knot is synchrotron radiation, as seen in lower-power sources. In common with these sources, there is evidence of morphological differences between the radio/optical and X-ray structures, and the spectrum is inconsistent with a one-component continuous-injection model. We suggest that the X-ray-bright knot is associated with a strong oblique shock in a moderately relativistic, light jet, at ∼ 20° to the line of sight, and that this shock is caused by the jet interacting with the wake in the cluster medium behind the companion galaxy of 3C 346. The general jet curvature can result from pressure gradients in the cluster atmosphere.