scholarly journals The Relation between Mid-Infrared Emission and Black Hole Mass in Active Galactic Nuclei: A Direct Way to Probe Black Hole Growth?

2002 ◽  
Vol 571 (1) ◽  
pp. L1-L5 ◽  
Author(s):  
Almudena Alonso-Herrero ◽  
Valentin D. Ivanov ◽  
Ray Jayawardhana ◽  
Takashi Hosokawa
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Infrared Emission ◽  
Black Hole Mass ◽  
Mid Infrared ◽  
Black Hole Growth ◽  
Hole Growth

scholarly journals The Hard X‐Ray Spectrum as a Probe for Black Hole Growth in Radio‐Quiet Active Galactic Nuclei

2008 ◽  
Vol 682 (1) ◽  
pp. 81-93 ◽  
Author(s):  
Ohad Shemmer ◽  
W. N. Brandt ◽  
Hagai Netzer ◽  
Roberto Maiolino ◽  
Shai Kaspi
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
X Ray ◽  
Black Hole Growth ◽  
Hole Growth

scholarly journals A CENSUS OF BROAD-LINE ACTIVE GALACTIC NUCLEI IN NEARBY GALAXIES: COEVAL STAR FORMATION AND RAPID BLACK HOLE GROWTH

2013 ◽  
Vol 763 (2) ◽  
pp. 133 ◽  
Author(s):  
Jonathan R. Trump ◽  
Alexander D. Hsu ◽  
Jerome J. Fang ◽  
S. M. Faber ◽  
David C. Koo ◽  
...  
Keyword(s):  
Black Hole ◽  
Star Formation ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Broad Line ◽  
Black Hole Growth ◽  
Nearby Galaxies ◽  
Hole Growth

scholarly journals BLACK HOLE GROWTH AND ACTIVE GALACTIC NUCLEI OBSCURATION BY INSTABILITY-DRIVEN INFLOWS IN HIGH-REDSHIFT DISK GALAXIES FED BY COLD STREAMS

2011 ◽  
Vol 741 (2) ◽  
pp. L33 ◽  
Author(s):  
Frédéric Bournaud ◽  
Avishai Dekel ◽  
Romain Teyssier ◽  
Marcello Cacciato ◽  
Emanuele Daddi ◽  
...  
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
High Redshift ◽  
Galactic Nuclei ◽  
Disk Galaxies ◽  
Black Hole Growth ◽  
Hole Growth

scholarly journals High-Ionization Mid-Infrared Lines as Black Hole Mass and Bolometric Luminosity Indicators in Active Galactic Nuclei

2008 ◽  
Vol 674 (1) ◽  
pp. L9-L12 ◽  
Author(s):  
K. M. Dasyra ◽  
L. C. Ho ◽  
L. Armus ◽  
P. Ogle ◽  
G. Helou ◽  
...  
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Black Hole Mass ◽  
Mid Infrared ◽  
Bolometric Luminosity ◽  
High Ionization

scholarly journals Compton Thick AGN

2013 ◽  
Vol 9 (S304) ◽  
pp. 112-118
Author(s):  
N. A. Levenson
Keyword(s):  
Active Galactic Nuclei ◽  
Geometric Distribution ◽  
Galactic Nuclei ◽  
Infrared Emission ◽  
Nuclear Activity ◽  
X Ray ◽  
Central Engine ◽  
Black Hole Growth ◽  
Hole Growth ◽  
X Ray Background

AbstractCompton thick active galactic nuclei (AGN), which are obscured by column density NH > 1.5 × 104 cm−2, can be difficult to identify. They are certainly cosmically significant, both in producing the observed cosmic X-ray background, and in providing a location where black hole growth is hidden from view. Here I review some recent results from surveys that provide indications of Compton thick AGN, considering X-ray, radio, and infrared selection techniques. I also offer a caution against using mid-infrared silicate features to measure line-of-sight obscuration to active galactic nuclei. Instead, these features better indicate the geometric distribution of dust that the central engine heats. I conclude that the outstanding problem of Compton thick AGN is not the cases where the obscuration is directly associated with the environment of the active nucleus itself, even in the most obscured examples. Instead, we still risk missing the completely buried AGN, which are obscured by large amounts of gas and dust over large solid angles. The solution to finding Compton thick AGN may be to begin the search based on infrared emission and star formation, and then select for nuclear activity.

scholarly journals OBSCURED GOODS ACTIVE GALACTIC NUCLEI AND THEIR HOST GALAXIES ATz< 1.25: THE SLOW BLACK HOLE GROWTH PHASE

2011 ◽  
Vol 734 (2) ◽  
pp. 121 ◽  
Author(s):  
B. D. Simmons ◽  
J. Van Duyne ◽  
C. M. Urry ◽  
E. Treister ◽  
A. M. Koekemoer ◽  
...  
Keyword(s):  
Black Hole ◽  
Active Galactic Nuclei ◽  
Growth Phase ◽  
Galactic Nuclei ◽  
Host Galaxies ◽  
Black Hole Growth ◽  
Hole Growth
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