Galaxy gas ejection in radio galaxies: the case of 3C 35

Galaxy gas ejection in radio galaxies: the case of 3C 35
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射电星系中的星系气体喷射:3C 35 的案例

DOI:
10.1093/mnras/stt215
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发表时间:
2013
影响因子:
4.8
通讯作者:
Mannering E
Mannering E
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Mannering E

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我们报道了对附近(z= 0.067)巨射电星系3C 35的XMM-牛顿和钱德拉观测结果。我们发现了一个X射线发射气体带的证据,垂直于3C 35的叶片之间,我们解释为化石组气体向外扩张的射电叶驱动。我们还检测到微弱的发射,从第二个,更广泛的组型环境,以及逆康普顿X射线发射的射电瓣。射电瓣和气体带的形态结构表明它们是共同演化的。此外,射电源的功率足以将星系尺度的气体喷射到100千秒差距的距离,而且两个特征的年龄相当(tsynch = 1.4亿年,tbelt = 8.0亿年)。3C 35大气层的破坏可能会提供化石系统如何调节的线索:射电星系需要具有与3C 35相当的能量来取代和调节化石群气体。我们讨论的气体带在3C 35的活动星系核燃料和反馈方面的影响。
We report results fromXMM–NewtonandChandraobservations of the nearby (z= 0.067) giant radio galaxy 3C 35. We find evidence for an X-ray-emitting gas belt, orthogonal to and lying between the lobes of 3C 35, which we interpret as fossil-group gas driven outwards by the expanding radio lobes. We also detect weak emission from a second, more extended group-type environment, as well as inverse-Compton X-ray emission from the radio lobes. The morphological structure of the radio lobes and gas belt point to co-evolution. Furthermore, the radio source is powerful enough to eject galaxy-scale gas out to distances of 100 kpc, and the ages of the two features are comparable (tsynch≈ 140 Myr,tbelt≈ 80 Myr). The destruction of 3C 35's atmosphere may offer clues as to how fossil systems are regulated: radio galaxies need to be of power comparable to 3C 35 to displace and regulate fossil-group gas. We discuss the implications of the gas belt in 3C 35 in terms of active galactic nuclei fuelling and feedback.
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