论文标题
调查六个中间杆中的低通量状态
Investigating the low-flux states in six Intermediate Polars
论文作者
论文摘要
我们提出了六个中间杆的光学测定法，这些中间杆表现出向低通量状态的过渡。对于这些系统中的四个，DW CNC，V515和V1223 SGR和RX J2133.7+5107，我们能够在低状态中和外出进行定时分析。我们发现，对于DW CNC和V515，并且随着通量的减少，光曲线中的主要周期性发生变化，表明在过渡到低状态时，来源的积聚性能发生了变化。对于V1223 SGR，我们发现该变异性几乎完全在最低通量下完全淬灭，但找不到变化的积聚几何形状的证据。对于RX J2133.7+5107，时间属性在低状态下不会变化，但是我们确实看到了一个增强的积聚时期，这与Beat频率上的可变性增加一致，我们与系统中的积分机制的变化不变。
We present optical photometry of six intermediate polars that exhibit transitions to a low-flux state. For four of these systems, DW Cnc, V515 And, V1223 Sgr and RX J2133.7+5107, we are able to perform timing analysis in and out of the low states. We find that, for DW Cnc and V515 And, the dominant periodicities in the light curves change as the flux decreases, indicating a change in the sources' accretion properties as they transition to the low state. For V1223 Sgr we find that the variability is almost completely quenched at the lowest flux, but do not find evidence for a changing accretion geometry. For RX J2133.7+5107, the temporal properties do not change in the low state, but we do see a period of enhanced accretion that is coincident with increased variability on the beat frequency, which we do not associate with a change in the accretion mechanisms in the system.
