论文标题
来自大力神X-1的Astrosat Laxpc观察结果（她的X-1）
Results from AstroSat LAXPC Observations of Hercules X-1 (Her X-1)
论文作者
论文摘要
大面积比例计数器（LAXPC）仪器上载了Astrosat天文台的X射线二元系统在Astrosat观察会话AO2，AO3和TO2期间的X射线二元系统。这些包括观察结果，而她的X-1处于其35天周期的不同阶段：低状态，转弯至主要高州，主要高州的高峰和主要高州的早期下降。这些观察结果还包括许多蘸酱和一颗中子恒星日食。在这里，我们为这些观测值提供了光曲线和柔软度比分析，并通过35天相和轨道相讨论了光谱变化的新特征。我们在主要高状态下发现了一种新现象：随着计数率降低，大约一半的倾角显示出恒定的柔软比率，这是以前从未见过的，可能是由高度电离的物质或非常密集的冷物质引起的。倾角的另一半显示，随着计数率降低，柔软度比正常降低。这些是由冷物质吸收引起的，以前是已知的。
The Large Area Proportional Counter (LAXPC) instruments onboard the AstroSat Observatory has observed the X-ray binary system Her X-1 during AstroSat observing sessions AO2, AO3 and TO2. These include observations while Her X-1 is in different stages of its 35 day cycle: Low State, Turn-on to Main High State, peak of Main High State and early decline of Main High State. These observations also include a number of dips and one egress of neutron star eclipse. Here we present light curves and softness ratio analysis for these observations and discuss new features of the spectral changes with 35-day phase and orbital phase. We find a new phenomenon for dips during Main High state: About half of the dips show constant softness ratio as count rate decreases, which has not been seen before, and could be caused by highly ionized matter or very dense cold matter. The other half of the dips show the normal decrease of softness ratio as count rate decreases. These are caused by cold matter absorption and were previously known.
