Stellar and Intermediate-Mass Black Holes in the Milky Way and Nearby Galaxies

2010 ◽  
Author(s):  
Jimmy Irwin ◽  
Renato Dupke ◽  
Jailson Alcaniz ◽  
Ramiro de la Reza ◽  
Simone Daflon
Keyword(s):  
Black Holes ◽  
Milky Way ◽  
Intermediate Mass ◽  
Nearby Galaxies ◽  
Intermediate Mass Black Holes

scholarly journals Introducing the Search for Intermediate-mass Black Holes in Nearby Galaxies (SIBLING) Survey

2020 ◽  
Vol 889 (2) ◽  
pp. 113 ◽  
Author(s):  
Jorge Martínez-Palomera ◽  
Paulina Lira ◽  
India Bhalla-Ladd ◽  
Francisco Förster ◽  
Richard M. Plotkin
Keyword(s):  
Black Holes ◽  
Intermediate Mass ◽  
Nearby Galaxies ◽  
Intermediate Mass Black Holes

scholarly journals On the Dynamical Capture of a MSP by an IMBH in a Globular Cluster

2007 ◽  
Vol 3 (S246) ◽  
pp. 359-360
Author(s):  
B. Devecchi ◽  
M. Colpi ◽  
M. Mapelli ◽  
A. Possenti
Keyword(s):  
Black Holes ◽  
Globular Cluster ◽  
Globular Clusters ◽  
Milky Way ◽  
Radio Telescopes ◽  
Next Generation ◽  
Intermediate Mass ◽  
Millisecond Pulsars ◽  
Intermediate Mass Black Holes

AbstractGlobular clusters (GCs) are rich of millisecond pulsars (MSPs) and might also host single or binary intermediate–mass black holes (IMBHs). We simulate 3- and 4-body encounters in order to test the possibility that an IMBH captures a MSP. The newly formed system could be revealed from the timing signal of the MSP, providing an unambiguous measure of the BH mass. In current surveys, the number of expected [IMBH,MSP] binaries in the Milky Way is ~0.1. If next-generation radio telescopes (e.g. SKA) will detect ~10 times more MSPs in GCs, we expect to observe at least one [IMBH,MSP] binary.

scholarly journals Black holes: from stars to galaxies

2006 ◽  
Vol 2 (S238) ◽  
pp. 309-314 ◽  
Author(s):  
I. Félix Mirabel
Keyword(s):  
Black Holes ◽  
Binary Systems ◽  
Stellar Mass ◽  
Supermassive Black Holes ◽  
Intermediate Mass ◽  
X Ray ◽  
Nearby Galaxies ◽  
Intermediate Mass Black Holes

AbstractWhile until recently they were often considered as exotic objects of dubious existence, in the last decades there have been overwhelming observational evidences for the presence of stellar mass black holes in binary systems, supermassive black holes at the centers of galaxies, and possibly, intermediate-mass black holes observed as ultraluminous X-ray sources in nearby galaxies. Black holes are now widely accepted as real physical entities that play an important role in several areas of modern astrophysics.Here I review the concluding remarks of the IAU Symposium No 238 on Black Holes, with particular emphasis on the topical questions in this area of research.

scholarly journals Tracing Intermediate-Mass Black Holes in the Galactic Centre

2007 ◽  
Vol 3 (S246) ◽  
pp. 367-368
Author(s):  
Ulf Löckmann ◽  
Holger Baumgardt
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
High Precision ◽  
Milky Way ◽  
New Method ◽  
Galactic Centre ◽  
Stellar Systems ◽  
Intermediate Mass ◽  
Massive Black Hole ◽  
Intermediate Mass Black Holes

AbstractWe have developed a new method for post-Newtonian, high-precision integration of stellar systems containing a super-massive black hole (SMBH), splitting the forces on a particle between a dominant central force and perturbations. We used this method to perform fully collisional N-body simulations of inspiralling intermediate-mass black holes (IMBHs) in the centre of the Milky Way.

scholarly journals Intermediate mass black holes in AGN discs - I. Production and growth

2012 ◽  
Vol 425 (1) ◽  
pp. 460-469 ◽  
Author(s):  
B. McKernan ◽  
K. E. S. Ford ◽  
W. Lyra ◽  
H. B. Perets
Keyword(s):  
Black Holes ◽  
Intermediate Mass ◽  
Intermediate Mass Black Holes

scholarly journals Formation of supermassive black holes in galactic nuclei – I. Delivering seed intermediate-mass black holes in massive stellar clusters

2021 ◽  
Vol 502 (2) ◽  
pp. 2682-2700
Author(s):  
Abbas Askar ◽  
Melvyn B Davies ◽  
Ross P Church
Keyword(s):  
Black Holes ◽  
Galactic Nuclei ◽  
Supermassive Black Holes ◽  
Stellar Clusters ◽  
Orbital Eccentricity ◽  
Intermediate Mass ◽  
Stellar Cluster ◽  
Wave Emission ◽  
Gas Accretion ◽  
Intermediate Mass Black Holes

ABSTRACT Supermassive black holes (SMBHs) are found in most galactic nuclei. A significant fraction of these nuclei also contains a nuclear stellar cluster (NSC) surrounding the SMBH. In this paper, we consider the idea that the NSC forms first, from the merger of several stellar clusters that may contain intermediate-mass black holes (IMBHs). These IMBHs can subsequently grow in the NSC and form an SMBH. We carry out N-body simulations of the simultaneous merger of three stellar clusters to form an NSC, and investigate the outcome of simulated runs containing zero, one, two, and three IMBHs. We find that IMBHs can efficiently sink to the centre of the merged cluster. If multiple merging clusters contain an IMBH, we find that an IMBH binary is likely to form and subsequently merge by gravitational wave emission. We show that these mergers are catalyzed by dynamical interactions with surrounding stars, which systematically harden the binary and increase its orbital eccentricity. The seed SMBH will be ejected from the NSC by the recoil kick produced when two IMBHs merge, if their mass ratio q ≳ 0.15. If the seed is ejected then no SMBH will form in the NSC. This is a natural pathway to explain those galactic nuclei that contain an NSC but apparently lack an SMBH, such as M33. However, if an IMBH is retained then it can seed the growth of an SMBH through gas accretion and tidal disruption of stars.

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