状态转换时日冕的抛射：微类星体中的一种常见行为？
Ejection of the corona at State transitions: a common behaviour in microquasars?
摘要：
大多数微类星体爆发的特征是在低/硬态（LHS）和高/软态（HSS）之间的状态转换。除了剧烈的光谱和时间变化，这种转变往往显示了一个离散的喷射事件在无线电范围内可检测到。然而，喷射物质的确切性质和产生这些现象的机制尚未解开。最近对几个来源同时进行的无线电和X射线观测表明，喷出的物质具有日冕性质。在GRS 1915+105、XTE J1550-564和2002年GX 339-4爆发的情况下，康普顿分量的通量在射电范围内检测到喷射之前急剧下降。最后，在H1743-322的例子中，日冕在状态转换之前发生了剧烈的物理变化，这与这种介质的一部分消失是一致的。因此，至少有4个微类星体的行为指向日冕在状态转换时喷射的方向，这一特征在其他可用来源的情况下还有待证实（或证实）。
英文摘要：
The onset of most microquasar outbursts is characterized by a state transition between a Low/Hard State (LHS) and a High/Soft State (HSS). Besides drastic spectral and timing changes, this transition often shows a discrete ejection event detectable in the radio range. However, the exact nature of the ejected material and the mechanisms that give birth to these phenomena are yet to be unraveled. Recent simultaneous radio and X-ray observations on several sources point to a coronal nature of the ejected material. In the cases of GRS 1915+105, XTE J1550-564, and the 2002 outburst of GX 339-4, the flux of the Compton component decreases sharply just before an ejection is detected in the radio range. Finally, in the case of H1743-322, drastic physical changes occurred in the corona just before the state transition, compatible with the disappearance of part of this medium. Thus, the behaviour of at least 4 microquasars points in the direction of an ejection of the corona at the state transition, feature that is yet to be confirmed (or infirmed) in the case of other available sources.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
