论文标题
扩展SMC X-1的旋转和轨道行为的基线
Extending the baseline for SMC X-1's spin and orbital behavior with NuSTAR stray light
论文作者
论文摘要
nustar流浪光观测的目录中包含来自明亮的X射线源的数据，这些数据源于拥挤的源区域内。这些观察结果提供了独特的附加数据，可以使用这些数据来监视X射线二进制文件，显示出可变的时序行为。在这项工作中，我们介绍了高质量X射线二进制SMC X-1的流量光数据的时序分析，这是对Straycats项目的单个源的第一个科学分析。我们描述了筛选杂散的光数据的过程，以进行科学分析，验证轨道象征，并创建时间和能量解析的脉冲曲线。我们发现，SMC X-1的轨道胚片没有变化，并确认了$ \dotν=（2.52 \ pm0.03）\ times10^{ - 11} $ hz s $^{ - 1} $的长期旋转率。我们还注意到，SMC X-1的脉冲轮廓的形状虽然剩余双峰，但随时间而变化，并且仅在能量时略有变化。
StrayCats, the catalog of NuSTAR stray light observations, contains data from bright X-ray sources that fall within crowded source regions. These observations offer unique additional data with which to monitor sources like X-ray binaries that show variable timing behavior. In this work, we present a timing analysis of stray light data of the high mass X-ray binary SMC X-1, the first scientific analysis of a single source from the StrayCats project. We describe the process of screening stray light data for scientific analysis, verify the orbital ephemeris, and create both time and energy resolved pulse profiles. We find that the orbital ephemeris of SMC X-1 is unchanged and confirm a long-term spin up rate of $\dotν=(2.52\pm0.03)\times10^{-11}$ Hz s$^{-1}$. We also note that the shape of SMC X-1's pulse profile, while remaining double-peaked, varies significantly with time and only slightly with energy.
