Varstrometry for Off-nucleus and Dual Subkiloparsec Active Galactic Nuclei (VODKA): Investigating the Nature of SDSS J0823+2418 at z = 1.81, A Likely Lensed Quasar

Dual quasars at small physical separations are an important precursor phase of galaxy mergers, ultimately leading to the coalescence of the two supermassive black holes. Starting from a sample of dual and/or lensed quasar candidates discovered using astrometric jitter in Gaia data, we present a pilo...

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Bibliographic Details
Published in:	The Astrophysical journal Vol. 956; no. 2; pp. 117 - 136
Main Authors:	Gross, Arran C., Chen, Yu-Ching, Foord, Adi, Liu, Xin, Shen, Yue, Oguri, Masamune, Goulding, Andy, Hwang, Hsiang-Chih, Zakamska, Nadia L., Ma, Yilun, Nolan, Liam
Format:	Journal Article
Language:	English
Published:	Philadelphia The American Astronomical Society 01.10.2023 IOP Publishing
Subjects:	Active galactic nuclei Astrophysics Black holes Coalescence Double quasars Galaxies Galaxy mergers & collisions Gravitational lensing Near infrared radiation Quasars Sky surveys (astronomy) Spectroscopy Spectrum analysis Supermassive black holes Time lag Vodka X-ray astronomy X-ray fluxes
ISSN:	0004-637X, 1538-4357
Online Access:	Get full text
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