论文标题
通过磁性限制的积聚流动触发微斑型在吸收白矮人中
Triggering micronovae through magnetically confined accretion flows in accreting white dwarfs
论文作者
论文摘要
已经报道了几个积聚白矮人的光波长处的快速爆发，其中光光度可以在不到一个小时的时间尺度淡入几个小时的时间内增加30个因子，而能量释放可以达到$ \ of of of of of y of y of of y of of of y of y of y of y of of of of y og \ of。几个系统还表明，在几天到几个月的时间尺度上，这些爆发是半出现的，这些爆发的时间曲线非常类似于在积聚中子星中I型X射线爆发中观察到的那些爆发。已经提出，观察到的微诺病可能是积聚白矮人的表面层上局部热核逃亡者的结果。在这里，我们提出了一个模型，其中吸积流磁性限制为吸收磁白矮人可能会触发局部的热核逃亡者。提出的触发微诺物的模型似乎偏爱具有高白色矮人质量和高质量转移速率的磁系统。
Rapid bursts at optical wavelengths have been reported for several accreting white dwarfs, where the optical luminosity can increase by up to a factor 30 in less than an hour fading on timescales of several hours, and where the energy release can reach $\approx10^{39}$ erg ("micronovae"). Several systems have also shown these bursts to be semi-recurrent on timescales of days to months and the temporal profiles of these bursts strongly resemble those observed in Type-I X-ray bursts in accreting neutron stars. It has been suggested that the observed micronovae may be the result of localised thermonuclear runaways on the surface layers of accreting white dwarfs. Here we propose a model where magnetic confinement of the accretion stream on to accreting magnetic white dwarfs may trigger localised thermonuclear runaways. The proposed model to trigger micronovae appears to favour magnetic systems with both high white dwarf masses and high mass-transfer rates.
