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arXiv 0803.1545astro-ph
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高红移巨射电星系6C 0905+39的逆康普顿X射线发射叶

The inverse-Compton X-ray-emitting lobes of the high-redshift giant radio galaxy 6C 0905+39

M. C. Erlund, A. C. Fabian, Katherine M. Blundell

摘要:

我们提出了新的XMM-牛顿数据的高红移(z=1.883),百万pc大小的巨型射电星系6C 0905+39。更大的收集面积和更长的观测时间,我们的新数据意味着我们可以更好地解释扩展的X射线发射,特别是它的光谱,这是由宇宙微波背景光子散射到X射线波段的高能电子在用过的同步等离子体的(大部分)无线电安静瓣6C 0905+39。我们计算了在过去的3 × 10^7年里,它的喷射等离子体向周围环境中倾倒的能量,并讨论了类似的,甚至更极端的,耗尽的无线电安静叶的例子对周围环境的影响。有趣的是,有迹象表明,从热点的发射比其余的扩展发射和核心,这意味着它是由于同步辐射。我们证实了我们先前在6C 0905+39东部热点中检测到的低能量周转。

英文摘要:

We present new XMM-Newton data of the high-redshift (z=1.883), Mpc-sized giant radio galaxy 6C 0905+39. The larger collecting area and longer observation time for our new data means that we can better characterise the extended X-ray emission, in particular its spectrum, which arises from cosmic microwave background photons scattered into the X-ray band by the energetic electrons in the spent synchrotron plasma of the (largely) radio-quiet lobes of 6C 0905+39. We calculate the energy that its jet-ejected plasma has dumped into its surroundings in the last 3 X 10^7 years and discuss the impact that similar, or even more extreme, examples of spent, radio-quiet lobes would have on their surroundings. Interestingly, there is an indication that the emission from the hotspots is softer than the rest of the extended emission and the core, implying it is due to synchrotron emission. We confirm our previous detection of the low-energy turnover in the eastern hotspot of 6C 0905+39.

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