论文标题
X射线变异性的快速变化和黑洞瞬态最大J1820+070的射流弹射
A rapid change in X-ray variability and a jet ejection in the black hole transient MAXI J1820+070
论文作者
论文摘要
我们提出了中子星的内部组成探索器X射线和弧形的Microkelvin成像仪大型阵列无线电观测值，该观测值是黑洞X射线瞬态Maxi J1820+070的快速难以柔软状态过渡。在从硬状态到软状态的过渡过程中，在两种特定类型的准碘振荡（QPO）之间进行了X射线功率密度光谱（从T type-C到B型）的转换，以及宽带X射线变异性的强度下降，在7-12 KEV频段中有短暂的火炬。在此开关（〜1.5-2.5小时）后不久，观察到与超亮射流的发射相对应的强无线电耀斑。尽管在其他黑洞X射线瞬变中已经看到了QPO过渡和无线电耀斑之间连接的提示，但我们的观察结果构成了迄今为止最强的观察证据，因为迄今为止，B Type-B QPO与离散喷气式喷射弹射的启动之间存在联系。
We present Neutron Star Interior Composition Explorer X-ray and Arcminute Microkelvin Imager Large Array radio observations of a rapid hard-to-soft state transition in the black hole X-ray transient MAXI J1820+070. During the transition from the hard state to the soft state a switch between two particular types of quasiperiodic oscillations (QPOs) was seen in the X-ray power density spectra, from type-C to type-B, along with a drop in the strength of the broadband X-ray variability and a brief flare in the 7-12 keV band. Soon after this switch (~1.5-2.5 hr) a strong radio flare was observed that corresponded to the launch of superluminal ejecta. Although hints of a connection between QPO transitions and radio flares have been seen in other black hole X-ray transients, our observations constitute the strongest observational evidence to date for a link between the appearance of type-B QPOs and the launch of discrete jet ejections.
