论文标题
无线电Nebulæ来自超级X射线二进制的无线电，作为常见的信封前体和持续的快速无线电爆发的对应物
Radio Nebulæ from Hyper-Accreting X-ray Binaries as Common Envelope Precursors and Persistent Counterparts of Fast Radio Bursts
论文作者
论文摘要
Roche Lobe从供体恒星到黑洞或中子星二进制伴侣可以演变为不稳定的失控质量转移的阶段，持续的持续数百个轨道（$ \ sillesim 10^{2} $ yr对于巨型供体来说），并最终在普通的eNvelope事件中加剧。在此短期阶段达到的高度超级埃德丁顿积分率（$ \ dot {m} \ gtrsim 10^{5} \ dot {m} _ {\ rm edd}）$伴随着磁盘，类似的，比超极端的超级巨大质量，但比超级x-ray（ulumuinity x-ray（Ulumuinity x-ray）（Ulumunitiase x-ray（Ulumunity x-ray））conderse（Ulumulinus）（Ulumunious x-ray（Ulumiulinus））（Ulumunious x-ray（UL）（UL）（UL）（Ulumuity x-ray（Ulumulinus））。同样与观察到的ULX相比，这种扩展的流出将使血浆的能量“气泡”膨胀到环形介质中。嵌入在这个气泡中的是一个相对论电子的星云，该星云是在更快的$ v \ gtrsim 0.1 c $风/射流中从内部积聚流中加热的。我们提出了一种时间依赖性的单区模型，用于同步射电发射和这种ULX``hyper-nebulae''的其他可观察性能。如果ULX喷气机是最近提出的重复快速无线电爆发（FRB）的来源，那么这种超源器可以产生持久的无线电发射，并对爆发产生较大的和时间变化的旋转措施，与FRB 20121102和FRB 190520b所看到的爆发一致。可以在无线电调查（例如vlass）中与FRB关联（例如核对方点源）中的FRB关联而发现的ULX超根，例如，其通量可以在短短几年的时间范围内显着演变，可能会从普通象形界合并中预示能量瞬变。
Roche lobe overflow from a donor star onto a black hole or neutron star binary companion can evolve to a phase of unstable runaway mass-transfer, lasting as short as hundreds of orbits ($\lesssim 10^{2}$ yr for a giant donor), and eventually culminating in a common envelope event. The highly super-Eddington accretion rates achieved during this brief phase ($\dot{M} \gtrsim 10^{5}\dot{M}_{\rm Edd})$ are accompanied by intense mass-loss in disk winds, analogous but even more extreme than ultra-luminous X-ray (ULX) sources in the nearby universe. Also in analogy with observed ULX, this expanding outflow will inflate an energetic `bubble' of plasma into the circumbinary medium. Embedded within this bubble is a nebula of relativistic electrons heated at the termination shock of the faster $v \gtrsim 0.1 c$ wind/jet from the inner accretion flow. We present a time-dependent, one-zone model for the synchrotron radio emission and other observable properties of such ULX `hyper-nebulae'. If ULX jets are sources of repeating fast radio bursts (FRB), as recently proposed, such hyper-nebulae could generate persistent radio emission and contribute large and time-variable rotation measure to the bursts, consistent with those seen from FRB 20121102 and FRB 190520B. ULX hyper-nebulae can be discovered independent of an FRB association in radio surveys such as VLASS, as off-nuclear point-sources whose fluxes can evolve significantly on timescales as short as years, possibly presaging energetic transients from common envelope mergers.
