星系团中 X 射线空洞的形成
星系团中的一小部分活动星系核周围存在巨大的 X 射线空洞，X 射线观测发现这些空洞的内能为 1048 ~ 1055 J。一般认为这些空洞的能量来自活动星系核的喷流。MS 0735+7421 是已知内能最高的一个 X 射线空洞，包含的能量为 1055 J，由观测数据估计出其中央黑洞质量为5 ? 109Md，射电观测发现其目前的喷流活动性较弱，喷流的活动时间大约为 108 a。利用最新建立的随机吸积-喷流模型对该源 X 射线空洞的形成过程进行研究，发现随机吸积产生的喷流能很好地解释空洞总能量及中央黑洞质量等重要观测现象。
he giant X-ray cavities, with typical internal energy around 1049 1055 J have been found around some active galactic nuclei (AGNs) in galaxy cluster. Generally, these cavities are thought to be powered by the strong jets of AGNs. MS 0735 ` 7421 hosts the most energetic AGN outburst known with the total energy around 1055 J. Observations show that the central black mass is about 5 109Md and the timespan of the jet activity is about 108 a. Recent radio data revealed that the jet activity of this source is relatively weak. In this work, we study the formation of this giant X-ray cavity using a model combining jet with chaotic accretion process. The total energy of the cavity and the mass of the central super massive black hole derived in our work are qualitatively consistent with the observational data.
刘京浩1,2，李佳文3，曹新伍3
10.3969/j.issn.1000-8349.2022.01.06
天文学
活动星系核X 射线空洞喷流吸积
刘京浩1,2，李佳文3，曹新伍3.星系团中 X 射线空洞的形成[EB/OL].(2023-06-07)[2025-08-04].https://chinaxiv.org/abs/202306.00375.点此复制
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