scholarly journals On the Relationship between Radio Emission and Black Hole Mass in Galactic Nuclei

2002 ◽  
Vol 564 (1) ◽  
pp. 120-132 ◽  
Author(s):  
Luis C. Ho
Keyword(s):  
Black Hole ◽  
Radio Emission ◽  
Galactic Nuclei ◽  
Black Hole Mass ◽  
The Relationship

scholarly journals On the relationship between black hole mass and X-ray variability amplitude in the low-mass regime of active galactic nuclei

2014 ◽  
Vol 10 (S312) ◽  
pp. 73-74
Author(s):  
H. Pan ◽  
W. Yuan ◽  
X.-L. Zhou ◽  
X. Dong ◽  
B. Liu
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Power Spectrum Density ◽  
Black Hole Mass ◽  
X Ray ◽  
Spectrum Density ◽  
Simple Extrapolation ◽  
Low Mass ◽  
The Relationship

AbstractRecent studies of active galactic nuclei (AGN) found a statistical inverse scaling between the X-ray normalized excess variance σrms2 (variability amplitude) and the black hole mass spanning over MBH = 106 − 109M⊙. We present a study of this relation by including AGN with MBH = 105 − 106M⊙. It is found that the relation is no longer a simple extrapolation of the known inverse proportion, but starts to flatten around 106M⊙. This behavior can be understood by the shape of the power spectrum density of AGN and its dependence on the black hole mass.

scholarly journals The relationship between X-ray variability amplitude and black hole mass in active galactic nuclei

2005 ◽  
Vol 358 (4) ◽  
pp. 1405-1416 ◽  
Author(s):  
Paul M. O'Neill ◽  
Kirpal Nandra ◽  
Iossif E. Papadakis ◽  
T. J. Turner
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Black Hole Mass ◽  
X Ray ◽  
The Relationship

The Relationship Between Black Hole Mass and Velocity Dispersion in Seyfert 1 Galaxies

2004 ◽  
Vol 615 (2) ◽  
pp. 652-661 ◽  
Author(s):  
Charles H. Nelson ◽  
Richard F. Green ◽  
Gary Bower ◽  
Karl Gebhardt ◽  
Donna Weistrop
Keyword(s):  
Black Hole ◽  
Velocity Dispersion ◽  
Black Hole Mass ◽  
The Relationship

scholarly journals The Black Hole Mass vs Bulge Mass Relationship in Spiral Galaxies

2001 ◽  
Vol 205 ◽  
pp. 58-61
Author(s):  
Alessandro Marconi ◽  
David Axon ◽  
John Atkinson ◽  
James Binney ◽  
Alessandro Capetti ◽  
...  
Keyword(s):  
Black Hole ◽  
Spatial Resolution ◽  
Mass Concentration ◽  
Rotation Curve ◽  
Spiral Galaxies ◽  
Surface Photometry ◽  
Black Hole Mass ◽  
Limited Sample ◽  
First Results ◽  
The Relationship

We describe an on-going HST program aimed at determining the relationship between the nuclear black hole mass and bulge mass in spiral galaxies. We have selected a volume limited sample of 54 nearby spiral galaxies for which we already have ground based emission line rotation curves, CCD surface photometry and radio maps. We are now obtaining HST/STIS longslit observations of each of the galaxies in the sample in order to determine the nuclear Hα rotation curve at high (∼ 0.1) spatial resolution. We will use these data to measure the unresolved dark mass concentration at the nucleus of each object. Here we show the first results from observations of objects in the sample.

The Relationship between Stellar and Black Hole Mass in Submillimeter Galaxies

2005 ◽  
Vol 635 (2) ◽  
pp. 853-863 ◽  
Author(s):  
C. Borys ◽  
Ian Smail ◽  
S. C. Chapman ◽  
A. W. Blain ◽  
D. M. Alexander ◽  
...  
Keyword(s):  
Black Hole ◽  
Black Hole Mass ◽  
Submillimeter Galaxies ◽  
The Relationship
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