Trapping a geon: Black hole formation by an imploding gravitational wave

1992 ◽  
Vol 46 (10) ◽  
pp. R4117-R4121 ◽  
Author(s):  
Andrew M. Abrahams ◽  
Charles R. Evans
Keyword(s):  
Black Hole ◽  
Gravitational Wave ◽  
Hole Formation ◽  
Black Hole Formation

A Conversation among Young Astrophysicists

2021 ◽  
Vol 30 (6) ◽  
pp. 20-29
Author(s):  
Young-Min KIM ◽  
Miok PARK ◽  
Yeong-Bok BAE ◽  
Sungwook E HONG ◽  
Chan PARK
Keyword(s):  
Black Hole ◽  
Gravitational Wave ◽  
Daily Life ◽  
Physical Significance ◽  
Hole Formation ◽  
Formation Theory ◽  
Black Hole Formation ◽  
Supermassive Black Hole ◽  
Nobel Prizes

Recently, many Nobel Prizes in Physics have been awarded in the field of astrophysics. Gravitational wave observations and contributions to LIGO in 2017, cosmology and exoplanets in 2019, and black hole formation theory and discovery of a supermassive black hole in 2020. Surprisingly, that these topics, which are somewhat distant from our daily life, have great physical significance and are being actively studied worldwide. We invited young astrophysicists at the forefront of astrophysic research to share their thoughts on astrophysics. That conversation took place online on June 2, 2021.

scholarly journals Inferring prompt black-hole formation in neutron star mergers from gravitational-wave data

2020 ◽  
Vol 101 (4) ◽  
Author(s):  
Michalis Agathos ◽  
Francesco Zappa ◽  
Sebastiano Bernuzzi ◽  
Albino Perego ◽  
Matteo Breschi ◽  
...  
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Gravitational Wave ◽  
Hole Formation ◽  
Black Hole Formation ◽  
Wave Data

GRAVITATIONAL SIGNALS EMITTED IN CORE COLLAPSES LEADING TO BLACK HOLE FORMATION

1998 ◽  
Vol 07 (06) ◽  
pp. 825-848 ◽  
Author(s):  
VALERIA FERRARI ◽  
CRISTIANO PALOMBA
Keyword(s):  
Black Hole ◽  
Gravitational Wave ◽  
Gravitational Radiation ◽  
Energy Spectra ◽  
Hole Formation ◽  
Gravitational Wave Detection ◽  
Black Hole Formation ◽  
Wave Detection ◽  
Numerical Studies

In this paper, we review the results of numerical studies on the gravitational radiation emitted in collapses of compact cores ending in a black hole. We compare the waveforms and the energy spectra obtained by using either perturbative or fully relativistic approaches, and discuss the preminent features that characterize these signals and their detectability by current experiments on gravitational wave detection.

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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