scholarly journals X-RAY PROPERTIES OF INTERMEDIATE-MASS BLACK HOLES IN ACTIVE GALAXIES. II. X-RAY-BRIGHT ACCRETION AND POSSIBLE EVIDENCE FOR SLIM DISKS

2009 ◽  
Vol 698 (2) ◽  
pp. 1515-1522 ◽  
Author(s):  
Louis-Benoit Desroches ◽  
Jenny E. Greene ◽  
Luis C. Ho
Keyword(s):  
Black Holes ◽  
Active Galaxies ◽  
Intermediate Mass ◽  
X Ray ◽  
Intermediate Mass Black Holes

scholarly journals A NEW SAMPLE OF CANDIDATE INTERMEDIATE-MASS BLACK HOLES SELECTED BY X-RAY VARIABILITY

2012 ◽  
Vol 751 (1) ◽  
pp. 39 ◽  
Author(s):  
Naoya Kamizasa ◽  
Yuichi Terashima ◽  
Hisamitsu Awaki
Keyword(s):  
Black Holes ◽  
Intermediate Mass ◽  
X Ray ◽  
Intermediate Mass Black Holes

scholarly journals Observational evidence for intermediate-mass black holes

2017 ◽  
Vol 26 (11) ◽  
pp. 1730021 ◽  
Author(s):  
Mar Mezcua
Keyword(s):  
Black Holes ◽  
Galaxy Formation ◽  
Globular Clusters ◽  
High Redshift ◽  
Galactic Nuclei ◽  
Observational Evidence ◽  
Intermediate Mass ◽  
X Ray ◽  
Mass Scaling ◽  
Intermediate Mass Black Holes

Intermediate-mass black holes (IMBHs), with masses in the range [Formula: see text]–[Formula: see text][Formula: see text]M[Formula: see text], are the link between stellar-mass BHs and supermassive BHs (SMBHs). They are thought to be the seeds from which SMBHs grow, which would explain the existence of quasars with BH masses of up to 10[Formula: see text][Formula: see text]M[Formula: see text] when the Universe was only 0.8 Gyr old. The detection and study of IMBHs has thus strong implications for understanding how SMBHs form and grow, which is ultimately linked to galaxy formation and growth, as well as for studies of the universality of BH accretion or the epoch of reionization. Proving the existence of seed BHs in the early Universe is not yet feasible with the current instrumentation; however, those seeds that did not grow into SMBHs can be found as IMBHs in the nearby Universe. In this review, I summarize the different scenarios proposed for the formation of IMBHs and gather all the observational evidence for the few hundreds of nearby IMBH candidates found in dwarf galaxies, globular clusters, and ultraluminous X-ray sources, as well as the possible discovery of a few seed BHs at high redshift. I discuss some of their properties, such as X-ray weakness and location in the BH mass scaling relations, and the possibility to discover IMBHs through high velocity clouds, tidal disruption events, gravitational waves, or accretion disks in active galactic nuclei. I finalize with the prospects for the detection of IMBHs with up-coming observatories.

scholarly journals Ultraluminous X-Ray Sources as Intermediate-Mass Black Holes Fed by Tidally Captured Stars

2004 ◽  
Vol 604 (2) ◽  
pp. L101-L104 ◽  
Author(s):  
Clovis Hopman ◽  
Simon F. Portegies Zwart ◽  
Tal Alexander
Keyword(s):  
Black Holes ◽  
Intermediate Mass ◽  
X Ray ◽  
Intermediate Mass Black Holes

scholarly journals X‐Ray Emission from Active Galactic Nuclei with Intermediate‐Mass Black Holes

2008 ◽  
Vol 689 (2) ◽  
pp. 762-774 ◽  
Author(s):  
G. C. Dewangan ◽  
S. Mathur ◽  
R. E. Griffiths ◽  
A. R. Rao
Keyword(s):  
Black Holes ◽  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Intermediate Mass ◽  
X Ray ◽  
Intermediate Mass Black Holes

scholarly journals Do Ultraluminous X-Ray Sources Really Contain Intermediate-Mass Black Holes?

2006 ◽  
Vol 58 (5) ◽  
pp. 915-923 ◽  
Author(s):  
Kiki Vierdayanti ◽  
Shin Mineshige ◽  
Ken Ebisawa ◽  
Toshihiro Kawaguchi
Keyword(s):  
Black Holes ◽  
Intermediate Mass ◽  
X Ray ◽  
Intermediate Mass Black Holes
Sign in / Sign up

Export Citation Format

Share Document