BLACK HOLE FORMATION VIA TACHYON CONDENSATION

2008 ◽  
Vol 23 (14n15) ◽  
pp. 2176-2177
Author(s):  
TAKAO SUYAMA
Keyword(s):  
Black Hole ◽  
Tachyon Condensation ◽  
Closed String ◽  
Space Time ◽  
Low Energy ◽  
The Other ◽  
Effective Theory ◽  
Classical Solutions ◽  
Hole Formation ◽  
Black Hole Formation

We investigate a possibility for a black hole to be created during closed string tachyon condensation. For the case of a bulk closed string tachyon, we find classical solutions of a low energy effective theory which has a black hole in the space-time. On the other hand, for the case of a localized closed string tachyon, a black hole, if created, would be of the string size and it would quickly evaporate.

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

scholarly journals Systematics of prompt black-hole formation in neutron star mergers

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Andreas Bauswein ◽  
Sebastian Blacker ◽  
Georgios Lioutas ◽  
Theodoros Soultanis ◽  
Vimal Vijayan ◽  
...  
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Hole Formation ◽  
Black Hole Formation

scholarly journals Magnetorotational collapse of supermassive stars: Black hole formation, gravitational waves, and jets

2017 ◽  
Vol 96 (4) ◽  
Author(s):  
Lunan Sun ◽  
Vasileios Paschalidis ◽  
Milton Ruiz ◽  
Stuart L. Shapiro
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
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.

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