论文标题
Nova后V1363 CYG在长时间尺度上的活性
The activity of the post-nova V1363 Cyg on long timescales
论文作者
论文摘要
V1363 CYG是灾难性变量（CV）和Nova后。我们对其长期光学活性的分析使用了来自AAVSO数据库和文献的档案数据。我们表明，至少在一部分时间里，V1363 CYG的积聚磁盘暴露于热粘液不稳定性（TVI）。在数十年的时间范围内，在高州或爆发中花费的时间急剧发生了变化。 V1363 CYG的高度可变亮度显示了TVI区域的凉爽磁盘上的几集强烈的亮度（光曲线中的颠簸）。在解释中，他们非常差异的衰减率表明，只有其中一些颠簸才能归因于矮人的爆发，而没有热白矮人对磁盘的强烈辐照。如果归因于V1363 CYG的DN爆发，则Bailey的关系表示赞成其轨道时期$ p _ {\ rm orb} $，非常长时间为CV，约20-40小时。即使磁盘在TVI区域内，亮度始终存在约435 d的主要周期长度。我们将其解释为通过活性区域的差异旋转来调制伴侣的质量流出。
V1363 Cyg is a cataclysmic variable (CV) and a post-nova. Our analysis of its long-term optical activity used the archival data from the AAVSO database and literature. We showed that the accretion disk of V1363 Cyg is exposed to the thermal-viscous instability (TVI) for at least part of the time. The time fraction spent in the high state or the outbursts dramatically changed on the timescale of decades. Highly variable brightness of V1363 Cyg displayed several episodes of a strong brightening (bumps in the light curve) from a cool disk in the TVI zone. In the interpretation, their vastly discrepant decay rates show that only some of these bumps can be attributed to the dwarf nova outbursts without strong irradiation of the disk by the hot white dwarf. The Bailey relation of the decay rate, if ascribed to a DN outburst of V1363 Cyg, speaks in favor of its orbital period $P_{\rm orb}$ very long for a CV, about 20-40 hr. A dominant cycle length of about 435 d was present in the brightness changes all the time, even when the disk was well inside the TVI zone. We interpret it as modulation of the companion's mass outflow by differential rotation of the active region(s).
