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

Journal Article · Tue Jul 01 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/789/1/56· OSTI ID:22356492

Zoghbi, A.; Reynolds, C.; Lohfink, A. ^[1]; Cackett, E. M. ^[2]; Kara, E.; Fabian, A. C. ^[3]; Harrison, F. A.; Balokovic, M. ^[4]; Matt, G. ^[5]; Boggs, S. E.; Craig, W. ^[6]; Christensen, F. E. ^[7]; Hailey, C. J. ^[8]; Stern, D. ^[9]

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1. Department of Astronomy, University of Maryland, College Park, MD 20742-2421 (United States)
2. Department of Physics and Astronomy, Wayne State University, 666 W. Hancock St, Detroit, MI 48201 (United States)
3. Institute of Astronomy, Madingley Road, Cambridge CB3 0HA (United Kingdom)
4. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125 (United States)
5. Dipartimento di Matematica e Fisica, Universita degli Studi Roma Tre, via della Vasca Navale 84, I-00146 Roma (Italy)
6. Space Science Laboratory, University of California, Berkeley, CA 94720 (United States)
7. DTU Space. National Space Institute, Technical University of Denmark, Elektrovej 327, 2800 Lyngby (Denmark)
8. Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States)
9. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)

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.

• OSTI ID: 22356492
• Journal Information: Astrophysical Journal, Vol. 789, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BLACK HOLES
EMISSION
GALAXY NUCLEI
IRON
MAPS
REFLECTION
RELATIVISTIC RANGE
SPECTRA
X RADIATION
X-RAY GALAXIES