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, Finn Erland 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 active galactic nuclei (AGNs) 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 timescales, 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.
Original languageEnglish
JournalAstrophysical Journal
Volume789
Issue number56
Number of pages8
ISSN0004-637X
DOIs
Publication statusPublished - 2014

Bibliographical note

© 2014. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

Keywords

  • galaxies: active
  • X-rays: galaxies
  • X-rays: individual (MCG-5-23-16)

Cite this

Zoghbi, A., Cackett, E. M., Reynolds, C., Kara, E., Harrison, F. A., Fabian, A. C., Lohfink, A., Matt, G., Balokovic, M., Boggs, S. E., Christensen, F. E., Craig, W., Hailey, C. J., Stern, D., & Zhang, W. W. (2014). Observations of MCG-5-23-16 with Suzaku, XMM-Newton and Nustar: Disk Tomography and Compton Hump Reverberation . Astrophysical Journal, 789(56). https://doi.org/10.1088/0004-637X/789/1/56