VODKA-JWST: Synchronized Growth of Two Supermassive Black Holes in a Massive Gas Disk? A 3.8 kpc Separation Dual Quasar at Cosmic Noon with the NIRSpec Integral Field Unit

The search for dual supermassive black holes (SMBHs) is of immense interest in modern astrophysics. Galaxy mergers may fuel and produce SMBH pairs. Actively accreting SMBH pairs are observed as dual quasars, which are vital probes of SMBH growth. Dual quasars at cosmic noon are not well characterize...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:The Astrophysical journal Ročník 982; číslo 1; s. 22 - 38
Hlavní autori: Ishikawa, Yuzo, Zakamska, Nadia L., Shen, Yue, Liu, Xin, Chen, Yu-Ching, Hwang, Hsiang-Chih, Vayner, Andrey, Rupke, David S. N., Veilleux, Sylvain, Wylezalek, Dominika, Gross, Arran C., Sankar, Swetha, Diachenko, Nadiia
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Philadelphia The American Astronomical Society 01.03.2025
IOP Publishing
Predmet:
Active galactic nuclei
Astrophysics
Black holes
Centroids
Coalescence
Double quasars
Galaxies
Galaxy mergers
Galaxy mergers & collisions
H alpha line
Ionization
James Webb Space Telescope
Kinematics
Numerical simulations
Quasars
Rotating disks
Separation
Spectral analysis
Spectroscopy
Spectrum analysis
Star & galaxy formation
Star formation
Supermassive black holes
ISSN:0004-637X, 1538-4357
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Popis
Shrnutí:The search for dual supermassive black holes (SMBHs) is of immense interest in modern astrophysics. Galaxy mergers may fuel and produce SMBH pairs. Actively accreting SMBH pairs are observed as dual quasars, which are vital probes of SMBH growth. Dual quasars at cosmic noon are not well characterized. Gaia observations have enabled a novel technique to identify dual quasars at kiloparsec scales based on the small jitters of the light centroid as the two quasars vary stochastically. We present the first detailed study of a z = 2.17, 0 . ″ 46, 3.8 kpc separation dual quasar, J0749+2255, using JWST/NIRSpec integral field unit spectroscopy. Identified by Gaia, J0749+2255 is one of the most distant small-separation dual quasars known. We detect the faint ionized gas of the host galaxy, traced by the narrow H α emission. Line ratios indicate ionization from the two quasars and from intense star formation. Spectral analysis of the two quasars suggests that they have similar black hole properties, hinting at the possible synchronized accretion activity or lensed quasar images. Surprisingly, the ionized gas kinematics suggest a rotating disk rather than the disturbed system expected in a major gas-rich galaxy merger. Numerical simulations show that this is a plausible outcome of a major gas-rich galaxy merger several tens of Myr before coalescence. Whether J0749+2255 reflects an interesting phase of dual quasar evolution or is a lensed quasar remains unclear. Thus, this study underscores the challenges in definitively distinguishing between dual and lensed quasars, with observations supporting either scenario.
Bibliografia:AAS53652
Galaxies and Cosmology
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/adb4ee