Measuring the Obscuring Column of a Disk Megamaser AGN in a Nearby Merger

被引：9

作者：

Masini, A. ^{[1
]}

Comastri, A. ^{[2
]}

Hickox, R. C. ^{[1
]}

Koss, M. ^{[3
]}

Civano, F. ^{[4
]}

Brigthman, M. ^{[5
]}

Brusa, M. ^{[2
,6
]}

Lanzuisi, G. ^{[2
]}

机构：

[1] Dartmouth Coll, Dept Phys & Astron, 6127 Wilder Lab, Hanover, NH 03755 USA

[2] INAF, Osservatorio Astrofis & Sci Spazio, Via Gobetti 93-3, I-40129 Bologna, Italy

[3] Eureka Sci, 2452 Delmer St Suite 100, Oakland, CA 94602 USA

[4] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[5] CALTECH, Cahill Ctr Astrophys, 1216 East Calif Blvd, Pasadena, CA 91125 USA

[6] Univ Bologna, Dipartimento Fis & Astron DIFA, Via Gobetti 93-2, I-40129 Bologna, Italy

来源：

ASTROPHYSICAL JOURNAL | 2019年 / 882卷 / 02期

基金：

美国国家航空航天局;

关键词：

galaxies: active; methods: observational; techniques: spectroscopic; X-rays: general; SUPERMASSIVE BLACK-HOLES; ACTIVE GALACTIC NUCLEI; COMPTON-THICK AGN; INFRARED-EMISSION; GALAXY MERGERS; GROWTH; MODEL; QUASARS;

D O I：

10.3847/1538-4357/ab3214

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 reflectiondominated, 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.

引用

页数：8

共 7 条

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ASTRONOMISCHE NACHRICHTEN, 2016, 337 (1-2) : 96 - 100
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Merhi, Maya
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MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 518 (01) : 1407 - 1417
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Beaulieu, Damien
Petric, Andreea
Robert, Carmelle
Alatalo, Katherine
Heckman, Timothy
Merhi, Maya
Rousseau-Nepton, Laurie
Rowlands, Kate
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 518 (01) : 1407 - 1417
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ASTROPHYSICAL JOURNAL LETTERS, 2019, 884 (02)

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