scholarly journals Supermassive black hole seed formation at high redshifts: long-term evolution of the direct collapse

2015 ◽  
Vol 456 (1) ◽  
pp. 500-511 ◽  
Author(s):  
Isaac Shlosman ◽  
Jun-Hwan Choi ◽  
Mitchell C. Begelman ◽  
Kentaro Nagamine
Keyword(s):  
Black Hole ◽  
Long Term Evolution ◽  
Seed Formation ◽  
Supermassive Black Hole ◽  
Term Evolution

Long‐Term Evolution of Massive Black Hole Binaries

2003 ◽  
Vol 596 (2) ◽  
pp. 860-878 ◽  
Author(s):  
Miloš Milosavljević ◽  
David Merritt
Keyword(s):  
Black Hole ◽  
Long Term Evolution ◽  
Massive Black Hole ◽  
Black Hole Binaries ◽  
Term Evolution

Supermassive black hole seed formation and the impact on black hole populations across cosmic time

2019 ◽  
Vol 15 (S356) ◽  
pp. 292-292
Author(s):  
Colin DeGraf
Keyword(s):  
Black Hole ◽  
Cosmic Time ◽  
Analysis Method ◽  
Seed Formation ◽  
Formation Pathway ◽  
Supermassive Black Hole ◽  
Luminosity Functions ◽  
Initial Seed ◽  
The Impact

AbstractAlthough it is well understood that supermassive black holes are found in essentially all galaxies, the mechanisms by which they initially form remain highly uncertain, despite the importance that the formation pathway can have on AGN and quasar behaviour at all redshifts. Using a post-processing analysis method combining cosmological simulations and analytic modeling, I will discuss how varying the conditions for formation of supermassive black hole seeds leads to changes in AGN populations. Looking at formation via direct collapse or from PopIII remnants, I will discuss the impact on black hole mass and luminosity functions, scaling relations, and black hole mergers, which each have effects at both high- and low-redshifts. In addition to demonstrating the importance of initial seed formation on our understanding of long-term black hole evolution, I will also show that the signatures of seed formation suggest multiple means by which upcoming electromagnetic and GW surveys (at both high- and low-z) can provide the data required to constrain initial supermassive black hole formation.

A new method to simulate long-term evolution of stars near a massive Black Hole

2019 ◽  
Vol 14 (S351) ◽  
pp. 434-437
Author(s):  
Y. Funato
Keyword(s):  
Black Hole ◽  
Galactic Center ◽  
Time Integration ◽  
Star Clusters ◽  
Long Term Evolution ◽  
Massive Black Hole ◽  
Simple Method ◽  
Time Integration Method ◽  
Term Evolution

AbstractN-body simulation is the necessary tool to investigate the evolution of star clusters. It is important to develop a time integration method which guarantees the appropriate accuracy and calculation cost.Here we present a new simple method for long term simulation of stars around a massive black hole in stellar systems. Usually the time integration orbits of stars revolving a massive black hole requires much simulation time. We introduce a time transformation which is a kind of ”inverse KS regularization” of time. Using our method, the integration of the long term evolution near a black hole (BH) becomes easier, especially applied to relatively large star clusters and the Galactic Center.

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