论文标题
准 - 星系核的周期性喷发
Quasi--Periodic Eruptions from Galaxy Nuclei
论文作者
论文摘要
我认为星系核中的准周期喷发（QPE）。所有已知的病例都自然地适合于高度偏心轨道中的白色矮人（WDS）的增值，这些轨道围绕着中央黑洞，这些轨道通过重力波发射而腐烂。我认为ESO 243-39 HLX-1是该进化的早期阶段的QPE来源，具有相应的更长的时期，更极端的偏心率和更大的WD供体。我明确地表明，尽管文献中有相反的说法，尽管QPE系统中的传质始终是高度稳定的。这种稳定性可以解释某些QPE来源中看到的交替长期爆发。随着WD轨道的衰变，喷发占据了轨道的较大部分并变得更明亮，从而搜索了明亮的低质量星系核中的准周期性 - 潜在的富有成果。
I consider quasi--periodic eruptions (QPEs) from galaxy nuclei. All the known cases fit naturally into a picture of accretion from white dwarfs (WDs) in highly eccentric orbits about the central black holes which decay through gravitational wave emission. I argue that ESO 243-39 HLX--1 is a QPE source at an earlier stages of this evolution, with correspondingly a longer period, more extreme eccentricity, and significantly more massive WD donor. I show explicitly that mass transfer in QPE systems is always highly stable, despite recent claims to the contrary in the literature. This stability may explain the alternating long--short eruptions seen in some QPE sources. As the WD orbit decays, the eruptions occupy larger fractions of the orbit and become brighter, making searches for quasi--periodicities in bright low--mass galaxy nuclei potentially fruitful.
