The large-scale jet-powered radio nebula of Circinus X-1
The large-scale jet-powered radio nebula of Circinus X-1
复制标题
圆规座 X-1 大型喷射动力射电星云
DOI：
10.1111/j.1365-2966.2006.10873.x
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发表时间：
2006
影响因子：
4.8
通讯作者：
Manchester
中科院分区：
文献类型：
--
作者：
V. Tudose;R. Fender;C. Kaiser;A. Tzioumis;M. Klis;R. Amsterdam;Bucharest;Southampton;Atnf;Manchester
我们提出了多时代的观测射电星云周围的中子星星X射线双星Circinus X-1在1.4和2.5 GHz的澳大利亚望远镜紧凑阵列之间2000年10月和2004年9月。星云可以被看作是来自系统的喷流与星际介质之间相互作用的结果，很可能我们实际上是通过喷流驱动的射电瓣向中央X射线双星系统看去。因此，对该星云的研究提供了一个独特的机会，可以首次使用量热法来估计一个明确被确定为中子星星的物体的喷流能量。提出了一个广泛的讨论复杂的能量：第一种方法是基于最小能量估计，而第二个采用自相似模型的射流和周围介质之间的相互作用。结果表明，该星云的年龄≤ 10 5年，相应的时均喷流功率≥ 10 35 erg s-1。在周期性耀斑发作期间，瞬时喷流功率可能达到与X射线光度类似的量值。
We present multi-epoch observations of the radio nebula around the neutron star X-ray binary Circinus X-1 made at 1.4 and 2.5 GHz with the Australia Telescope Compact Array between 2000 October and 2004 September. The nebula can be seen as a result of the interaction between the jet from the system and the interstellar medium and it is likely that we are actually looking toward the central X-ray binary system through the jet-powered radio lobe. The study of the nebula thus offers a unique opportunity to estimate for the first time using calorimetry the energetics of a jet from an object clearly identified as a neutron star. An extensive discussion on the energetics of the complex is presented: a first approach is based on the minimum energy estimation, while a second one employs a self-similar model of the interaction between the jets and the surrounding medium. The results suggest an age for the nebula of ≤ 10 5 yr and a corresponding time-averaged jet power ≥ 10 35 erg s -1 . During periodic flaring episodes, the instantaneous jet power may reach values of similar magnitude to the X-ray luminosity.