NuSTAR and Suzaku Observations of the Hard State in Cygnus X-1: Locating the Inner Accretion Disk

@article{Parker2015NuSTARAS,
  title={NuSTAR and Suzaku Observations of the Hard State in Cygnus X-1: Locating the Inner Accretion Disk},
  author={M. Parker and J. Tomsick and J. Miller and K. Yamaoka and A. Lohfink and M. Nowak and A. Fabian and W. Alston and S. Boggs and F. Christensen and W. Craig and F. Fuerst and P. Gandhi and B. Grefenstette and V. Grinberg and C. Hailey and F. Harrison and E. Kara and A. L. King and D. Stern and D. Walton and J. Wilms and W. Zhang},
  journal={The Astrophysical Journal},
  year={2015},
  volume={808},
  pages={9}
}
We present simultaneous Nuclear Spectroscopic Telescope Array (NuSTAR ) and Suzaku observations of the X-ray binary Cygnus X-1 in the hard state. This is the first time this state has been observed in Cyg X-1 with NuSTAR, which enables us to study the reflection and broadband spectra in unprecedented detail. We confirm that the iron line cannot be fit with a combination of narrow lines and absorption features, instead requiring a relativistically blurred profile in combination with a narrow… Expand
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