The hybrid radio/X-ray correlation of the black hole transient MAXI J1348–630
The hybrid radio/X-ray correlation of the black hole transient MAXI J1348–630
复制标题
DOI：
10.1093/mnrasl/slab049
复制
发表时间：
2021-05
期刊：
影响因子：
--
通讯作者：
F. Carotenuto;S. Corbel;E. Tremou;T. Russell;A. Tzioumis;R. Fender;P. Woudt;S. Motta;J. Miller-Jone
中科院分区：
文献类型：
--
作者：
F. Carotenuto;S. Corbel;E. Tremou;T. Russell;A. Tzioumis;R. Fender;P. Woudt;S. Motta;J. Miller-Jone
黑洞低质量X射线双星在其硬光谱状态下，在致密喷流的射电辐射和内部吸积流的X射线辐射之间表现出两种不同的关联。在这里，我们介绍了最近发现的吸积黑洞MAXI J1348-630在2019/2020年爆发期间的准同步射电和X射线观测的大型数据集。我们的结果跨越了几乎六个数量级的X射线光度，使我们能够探测从爆发的最亮阶段到最暗阶段的吸积-抛射耦合。我们发现MAXI J1348-630在最高观测光度处属于不断增长的离群值群体。有趣的是，MAXI J1348-630在LX偏离了异常值轨道。7×10(D/2.2kpc)erg S−1，并最终在lx‘10(D/2.2kpc)erg S−1重新加入标准径迹，显示了仅在少数震源中观察到的混合射电/X射线关联。然而，对于MAXI J1348-630，这些转变发生在比类似来源(至少一个数量级)低得多的亮度下。我们根据目前提出的情景讨论了MAXI J1348-630的行为，并强调了未来对混合关联源进行深入监测的重要性，特别是在接近跃迁和低光度区域。
Black hole low mass X-ray binaries in their hard spectral state are found to display two different correlations between the radio emission from the compact jets and the X-ray emission from the inner accretion flow. Here, we present a large data set of quasi-simultaneous radio and X-ray observations of the recently discovered accreting black hole MAXI J1348–630 during its 2019/2020 outburst. Our results span almost six orders of magnitude in X-ray luminosity, allowing us to probe the accretionejection coupling from the brightest to the faintest phases of the outburst. We find that MAXI J1348–630 belongs to the growing population of outliers at the highest observed luminosities. Interestingly, MAXI J1348–630 deviates from the outlier track at LX . 7× 10(D/2.2 kpc) erg s−1 and ultimately rejoins the standard track at LX ' 10(D/2.2 kpc) erg s−1, displaying a hybrid radio/X-ray correlation, observed only in a handful of sources. However, for MAXI J1348–630 these transitions happen at luminosities much lower than what observed for similar sources (at least an order of magnitude). We discuss the behaviour of MAXI J1348–630 in light of the currently proposed scenarios and we highlight the importance of future deep monitorings of hybrid correlation sources, especially close to the transitions and in the low luminosity regime.