THE SOFT STATE OF CYGNUS X-1 OBSERVED WITH NuSTAR: A VARIABLE CORONA AND A STABLE INNER DISK

We present a multi-epoch hard X-ray analysis of Cygnus X-1 in its soft state based on four observations with the Nuclear Spectroscopic Telescope Array (NuSTAR). Despite the basic similarity of the observed spectra, there is clear spectral variability between epochs. To investigate this variability,...

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Bibliographic Details
Main Authors: Walton, D. J., Tomsick, J. A., Madsen, K. K., Barret, D., Boggs, S. E., Christensen, F. E., Clavel, M., Craig, W. W., Fabian, A. C., Fuerst, F., Hailey, C. J., Harrison, F. A., Miller, J. M., Parker, M. L., Rahoui, F., Stern, D., Tao, L., Wilms, J., Zhang, W., Grinberg, Victoria
Other Authors: MIT Kavli Institute for Astrophysics and Space Research
Format: Article
Language:en_US
Published: IOP Publishing 2016
Online Access:http://hdl.handle.net/1721.1/106131
https://orcid.org/0000-0003-2538-0188