Is Superorbital Modulation in SMC X-1 Caused by Absorption in a Warped Precessing Accretion Disk?

@article{Pradhan2020IsSM,
  title={Is Superorbital Modulation in SMC X-1 Caused by Absorption in a Warped Precessing Accretion Disk?},
  author={Pragati Pradhan and Chandreyee Maitra and Biswajit Paul},
  journal={arXiv: High Energy Astrophysical Phenomena},
  year={2020}
}
We present a broadband spectral-timing analysis of SMC X-1 at different intensity states of its super-orbital variation using 10 Suzaku and 6 NuSTAR observations. The spectrum in all the states can be described by an absorbed powerlaw with a high energy cutoff and a black-body component along with an iron emission line. Compared to other supergiant HMXBs, the Fe K$\alpha$ line equivalent width is low in SMC X-1 - from less than 10 eV in high state to up to $\sim$ 270 eV in the low states. The… 
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