scholarly journals Black hole formation from the gravitational collapse of a nonspherical network of structures

2018 ◽  
Vol 97 (10) ◽  
Author(s):  
Ismael Delgado Gaspar ◽  
Juan Carlos Hidalgo ◽  
Roberto A. Sussman ◽  
Israel Quiros
Keyword(s):  
Black Hole ◽  
Gravitational Collapse ◽  
Hole Formation ◽  
Black Hole Formation

Gravitational collapse of dust fluid and dark energy in the presence of curvature: Black hole formation

2019 ◽  
Vol 34 (29) ◽  
pp. 1950240 ◽  
Author(s):  
Syed Zaheer Abbas ◽  
Hasrat Hussain Shah ◽  
Huafei Sun ◽  
Farook Rahaman ◽  
Faizuddin Ahmed
Keyword(s):  
Black Hole ◽  
Dark Energy ◽  
Equation Of State ◽  
Gravitational Collapse ◽  
Dust Cloud ◽  
Curvature Effect ◽  
Hole Formation ◽  
Black Hole Formation ◽  
State Formula ◽  
Dust Fluid

Study of gravitational collapse and black hole formation has got much interest in recent years after gravitational waves detection from mergers of black hole binaries. Here, we studied the gravitational collapse of a spherically symmetric clump of matter, constituted of dust fluid, [Formula: see text], in a background of dark energy, [Formula: see text]. We investigate the curvature effect [Formula: see text] on the gravitational collapsing process. Gravitational collapsing process for two different cases is discussed i.e. collapse of dust cloud only and collapse of dark energy. We used equation of state [Formula: see text], [Formula: see text]. For dark energy case, we discuss the collapsing process and curvature effect for different parameter values of equation of state.

scholarly journals Feeding and feedback from little monsters: AGN in dwarf galaxies

2020 ◽  
Vol 15 (S359) ◽  
pp. 238-242
Author(s):  
Mar Mezcua
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Early Universe ◽  
Dwarf Galaxies ◽  
Scaling Relations ◽  
Strong Impact ◽  
Hole Formation ◽  
Intermediate Mass ◽  
Black Hole Formation ◽  
Low Mass

AbstractDetecting the seed black holes from which quasars formed is extremely challenging; however, those seeds that did not grow into supermassive should be found as intermediate-mass black holes (IMBHs) of 100 – 105 M⊙ in local dwarf galaxies. The use of deep multiwavelength surveys has revealed that a population of actively accreting IMBHs (low-mass AGN) exists in dwarf galaxies at least out to z ˜3. The black hole occupation fraction of these galaxies suggests that the early Universe seed black holes formed from direct collapse of gas, which is reinforced by the possible flattening of the black hole-galaxy scaling relations at the low-mass end. This scenario is however challenged by the finding that AGN feedback can have a strong impact on dwarf galaxies, which implies that low-mass AGN in dwarf galaxies might not be the untouched relics of the early seed black holes. This has important implications for seed black hole formation models.

scholarly journals Quantum black hole formation in the BFSS matrix model

2015 ◽  
Vol 2015 (7) ◽  
Author(s):  
Sinya Aoki ◽  
Masanori Hanada ◽  
Norihiro Iizuka
Keyword(s):  
Black Hole ◽  
Matrix Model ◽  
Hole Formation ◽  
Quantum Black Hole ◽  
Black Hole Formation
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