The Spin of the Supermassive Black Hole in MCG-05-23-16
Abstract
We present the results of a multi-epoch and multi-instrument study of the supermassive black hole at the center of the galaxy MCG-05-23-16 aiming at the determination of its spin. We have analyzed high quality X-ray data of MCG-05-23-16 from XMM-Newton, Suzaku, and NuSTAR obtained over a period of about 10~years. We have built a double-reflection spectral model that well describes the observed spectrum based on prior results suggesting that the iron K$\alpha$ line includes both a broad component from the disk's reflection spectrum and a narrow component due to fluorescence and scattering off material by more distant matter. Our measurement of the black hole spin parameter is $a_* = 0.856\pm0.006$ (99\% confidence level).
Additional Information
This work was supported by the National Natural Science Foundation of China (Grants No. 11103057, U1531117, and 11305038) and the Thousand Young Talents Program. M.G.-N. also acknowledges the support from the China Scholarship Council (Grant No. 2014GXZY08). C.B. also acknowledges the support from the Alexander von Humboldt Foundation.Attached Files
Submitted - 1703.07182.pdf
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Additional details
- Eprint ID
- 75404
- Resolver ID
- CaltechAUTHORS:20170327-085856062
- Created
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2017-03-27Created from EPrint's datestamp field
- Updated
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2023-06-02Created from EPrint's last_modified field
- Caltech groups
- NuSTAR