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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29063
Title: Measuring the Obscuring Column of a Disk Megamaser AGN in a Nearby Merger
Authors: Masini, A.
COMASTRI, Andrea 
Hickox, R. C.
Koss, M.
Civano, F.
Brigthman, M.
Brusa, M.
LANZUISI, Giorgio 
Issue Date: 2019
Journal: THE ASTROPHYSICAL JOURNAL 
Number: 882
Issue: 2
First Page: 83
Abstract: Active galactic nuclei (AGNs) hosting disk water megamasers are well known to be obscured by large amounts of gas, likely due to the presence along the line of sight of an almost edge-on disky structure orbiting the supermassive black hole. Correcting for the high obscuration is crucial to infer parameters intrinsic to the source, like its luminosity. We present a broadband X-ray spectral analysis of a water megamaser AGN in an early merger (NGC 5765B), combining Chandra and NuSTAR data. NGC 5765B is highly Compton-thick and reflection-dominated, following the general trend among disk megamasers. Combining the exquisite black hole mass from masers with our X-ray spectroscopy, the Eddington ratio of the megamaser is estimated to be in the 2%-14% range, and its robustness is confirmed through SED fitting.
URI: http://hdl.handle.net/20.500.12386/29063
URL: https://iopscience.iop.org/article/10.3847/1538-4357/ab3214
ISSN: 0004-637X
DOI: 10.3847/1538-4357/ab3214
Bibcode ADS: 2019ApJ...882...83M
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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