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arXiv · 1405.3674

Observations of MCG-5-23-16 with Suzaku, XMM-Newton and NuSTAR: Disk tomography and Compton hump reverberation

A. Zoghbi·E. M. Cackett·C. Reynolds·E. Kara·F. A. Harrison·A. C. Fabian·A. Lohfink·G. Matt·M. Balokovic·S. E. Boggs·F. E. Christensen·W. Craig·C. J. Hailey·D. Stern·W. W. Zhang
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Abstract

MCG-5-23-16 is one of the first AGN where relativistic reverberation in the iron K line originating in the vicinity of the supermassive black hole was found, based on a short XMM-Newton observation. In this work, we present the results from long X-ray observations using Suzaku, XMM-Newton and NuSTAR designed to map the emission region using X-ray reverberation. A relativistic iron line is detected in the lag spectra on three different time-scales, allowing the emission from different regions around the black hole to be separated. Using NuSTAR coverage of energies above 10 keV reveals a lag between these energies and the primary continuum, which is detected for the first time in an AGN. This lag is a result of the Compton reflection hump responding to changes in the primary source in a manner similar to the response of the relativistic iron K line.

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A. Zoghbi, E. M. Cackett, C. Reynolds, E. Kara, F. A. Harrison, A. C. Fabian, A. Lohfink, G. Matt, M. Balokovic, S. E. Boggs, F. E. Christensen, W. Craig, C. J. Hailey, D. Stern, W. W. Zhang. 2014-05-14. Observations of MCG-5-23-16 with Suzaku, XMM-Newton and NuSTAR: Disk tomography and Compton hump reverberation. https://doi.org/10.1088/0004-637x%2F789%2F1%2F56

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