scholarly journals Backflows by active galactic nuclei jets: global properties and influence on supermassive black hole accretion

2017 ◽  
Vol 467 (4) ◽  
pp. 4526-4539 ◽  
Author(s):  
S. Cielo ◽  
V. Antonuccio-Delogu ◽  
J. Silk ◽  
A. D. Romeo
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Supermassive Black Hole ◽  
Black Hole Accretion ◽  
Global Properties ◽  
Active Galactic Nuclei Jets ◽  
Hole Accretion

scholarly journals BINARY ACTIVE GALACTIC NUCLEI IN STRIPE 82: CONSTRAINTS ON SYNCHRONIZED BLACK HOLE ACCRETION IN MAJOR MERGERS

2015 ◽  
Vol 815 (1) ◽  
pp. L6 ◽  
Author(s):  
Hai Fu ◽  
J. M. Wrobel ◽  
A. D. Myers ◽  
S. G. Djorgovski ◽  
Lin Yan
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Black Hole Accretion ◽  
Hole Accretion

The cosmic history of the X–ray background

2005 ◽  
Vol 363 (1828) ◽  
pp. 685-694 ◽  
Author(s):  
Amy J. Barger
Keyword(s):  
Black Hole ◽  
Galactic Nuclei ◽  
X Ray ◽  
Supermassive Black Hole ◽  
Black Hole Accretion ◽  
History Of ◽  
Dominant Period ◽  
X Ray Background ◽  
Hole Accretion ◽  
Cosmic History

The Chandra and XMM–Newton X–ray observatories have detected obscured active galactic nuclei (AGN) and almost fully resolved the X–ray background into discrete sources. Ground–based observations of the X–ray sources enable the reconstruction of the history of supermassive black hole accretion from the earliest times to the present. A dramatic cosmic downsizing of AGN luminosities is seen at recent times. Correspondingly, the production rate of the AGN radiation drops rapidly, and the dominant period of supermassive black hole production is seen to be at redshifts near z = 1.

Exploring Black Hole Accretion in Active Galactic Nuclei with Simbol-X

2009 ◽  
Author(s):  
R. W. Goosmann ◽  
M. Dovčiak ◽  
M. Mouchet ◽  
B. Czerny ◽  
V. Karas ◽  
...  
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Black Hole Accretion ◽  
Hole Accretion

2.9. Microlens mapping of disks in active galactic nuclei

1998 ◽  
Vol 184 ◽  
pp. 75-76 ◽  
Author(s):  
A. Yonehara ◽  
S. Mineshige ◽  
J. Fukue ◽  
M. Umemura ◽  
E.L. Turner
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Accretion Disk ◽  
Central Region ◽  
Galactic Nuclei ◽  
Direct Information ◽  
Supermassive Black Hole ◽  
Disk Size

Generally, it is believed that there is a supermassive black hole and a surrounding accretion disk in a central region of active galactic nuclei (AGN). However, it is quite difficult to obtain direct information about the center of AGN, because the accretion disk size is far too small to resolve.

Determination of supermassive black hole spins in active galactic nuclei

2020 ◽  
Vol 35 (02n03) ◽  
pp. 2040054
Author(s):  
M. Yu. Piotrovich ◽  
V. L. Afanasiev ◽  
S. D. Buliga ◽  
T. M. Natsvlishvili
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Active Galactic Nuclei ◽  
Accretion Disk ◽  
Galactic Nuclei ◽  
Supermassive Black Holes ◽  
Disk Model ◽  
Supermassive Black Hole

Based on spectropolarimetry for a number of active galactic nuclei in Seyfert 1 type galaxies observed with the 6-m BTA telescope, we have estimated the spins of the supermassive black holes at the centers of these galaxies. We have determined the spins based on the standard Shakura-Sunyaev accretion disk model. More than 70% of the investigated active galactic nuclei are shown to have Kerr supermassive black holes with a dimensionless spin greater than 0.9.

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