Buoyancy-driven inflow to a relic cold core: the gas belt in radio galaxy 3C 386
Buoyancy-driven inflow to a relic cold core: the gas belt in radio galaxy 3C 386
复制标题
浮力驱动流入遗迹冷核:射电星系 3C 386 中的气体带
DOI:
10.1093/mnras/stw944
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发表时间:
2016
影响因子:
4.8
通讯作者:
Duffy R
中科院分区:
文献类型:
--
作者:
Duffy R
We report measurements from anXMM–Newtonobservation of the low-excitation radio galaxy 3C 386. The study focusses on an X-ray-emitting gas belt, which lies between and orthogonal to the radio lobes of 3C 386 and has a mean temperature of 0.94 ± 0.05 keV, cooler than the extended group atmosphere. The gas in the belt shows temperature structure with material closer to the surrounding medium being hotter than gas closer to the host galaxy. We suggest that this gas belt involves a ‘buoyancy-driven inflow’ of part of the group-gas atmosphere where the buoyant rise of the radio lobes through the ambient medium has directed an inflow towards the relic cold core of the group. Inverse-Compton emission from the radio lobes is detected at a level consistent with a slight suppression of the magnetic field below the equipartition value.
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通讯作者:
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影响因子:
4.8
作者:
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通讯作者:
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