2019ApJ...886...92L

Query : 2019ApJ...886...92L

2019ApJ...886...92L - Astrophys. J., 886, 92-92 (2019/December-1)

Growth of massive black holes at high-z via accretion predominantly driven by magnetic outflows.

LI J. and CAO X.

Abstract (from CDS):

Luminous quasars powered by accreting supermassive black holes (SMBHs) have been found in the early universe at z≳7.5, which set a strong constraint on both the seed black hole (BH) mass and the rapid growth of the SMBHs. In this work, we explore how the SMBHs grow through Eddington-limited accretion driven predominantly by magnetic outflows. Most angular momentum and the released gravitational energy in the disk can be removed by magnetic outflows, therefore the mass-accretion rate of the BH can be high even if the disk is radiating at sub-Eddington luminosity. It is found that the SMBH with several billion solar masses discovered at z≳7 may be grown through chaotic accretion predominantly driven by magnetic outflows from a stellar mass BH, when the disks are radiating at moderate luminosity (∼0.5 Eddington luminosity) with mild outflows. We find that most SMBHs are spinning at moderate values of spin parameter a*, which implies only a small fraction of quasars may have radio jets.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Accretion - Magnetic fields - Quasars - Supermassive black holes - Jets

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO J1342+0928 QSO 13 42 08.100 +09 28 38.36           ~ 145 0

Query : 2019ApJ...886...92L

Basic data :
QSO J1342+0928 -- Quasar
Other object types: otypes_help 		QSO (2020ApJ,QSO,...), NIR (ULAS)
ICRS coord. (ep=J2000) : 		13 42 08.100 +09 28 38.36 (mm) [ 170 100 90 ] C 2020ApJ...904..130V
FK4 coord. (ep=B1950 eq=1950) : 		13 39 39.153 +09 43 44.97 [ 170 100 90 ]
Gal coord. (ep=J2000) : 		339.451426 +68.674792 [ 170 100 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 291685 [210] / z(spectroscopic) 7.5413 [0.0007] / cz 2260825 [210]
   (NIR) C 2021ApJ...923..262Y
Fluxes (3) :
J (AB) 20.30 [0.02] C 2021ApJ...923..262Y
H (AB) 20.010 [0.1177] D 2020MNRAS.494..789R
K (AB) 20.010 [0.1194] D 2020MNRAS.494..789R
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Identifiers (3) :
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QSO J1342+0928 ULAS J134208.10+092838.6 [YWF2021] J134208.10+092838.6

References (145 between 1850 and 2026) (Total 145)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Velocities : 2   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : QSO J1342+0928

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ULAS J134208.10+092838.6

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