Formation of Black hole-Disk System via PopIII Stellar Core Collapse in Full General Relativity

2010 ◽  
Author(s):  
Yucihiro Sekiguchi ◽  
Nobuyuki Kawai ◽  
Shigehiro Nagataki
Keyword(s):  
General Relativity ◽  
Black Hole ◽  
Core Collapse ◽  
Disk System ◽  
Stellar Core

scholarly journals Stellar Core Collapse and Exotic Matter

2011 ◽  
Vol 7 (S279) ◽  
pp. 367-368
Author(s):  
Ken'ichiro Nakazato ◽  
Kohsuke Sumiyoshi
Keyword(s):  
Black Hole ◽  
Degrees Of Freedom ◽  
Gamma Ray ◽  
Dense Matter ◽  
Gamma Ray Bursts ◽  
Core Collapse ◽  
Hole Formation ◽  
Stellar Core ◽  
Black Hole Formation ◽  
Hydrodynamical Simulations

AbstractSome supernovae and gamma-ray bursts are thought to accompany a black hole formation. In the process of a black hole formation, a central core becomes hot and dense enough for hyperons and quarks to appear. In this study, we perform neutrino-radiation hydrodynamical simulations of a stellar core collapse and black hole formation taking into account such exotic components. In our computation, general relativity is fully considered under spherical symmetry. As a result, we find that the additional degrees of freedom soften the equation of state of matter and promote the black hole formation. Furthermore, their effects are detectable as a neutrino signal. We believe that the properties of hot and dense matter at extreme conditions are essential for the studies on the astrophysical black hole formation. This study will be hopefully a first step toward a physics of the central engine of gamma-ray bursts.

scholarly journals Constraining the fraction of core-collapse supernovae harbouring choked jets with high-energy neutrinos

2020 ◽  
Vol 492 (1) ◽  
pp. 843-847
Author(s):  
Dafne Guetta ◽  
Roi Rahin ◽  
Imre Bartos ◽  
Massimo Della Valle
Keyword(s):  
Black Hole ◽  
Gamma Ray ◽  
High Energy ◽  
Gamma Ray Bursts ◽  
Core Collapse ◽  
Stellar Envelope ◽  
Jet Production ◽  
Stellar Core ◽  
High Fraction ◽  
High Energy Neutrinos

ABSTRACT The joint observation of core-collapse supernovae with gamma-ray bursts shows that jets can be launched in the aftermath of stellar core collapse, likely by a newly formed black hole that accretes matter from the star. Such gamma-ray bursts have only been observed accompanying Type Ibc supernovae, indicating a stellar progenitor that lost its hydrogen envelope before collapse. According to recent hypothesis, it is possible that jets are launched in core-collapse events even when the progenitors still retain their hydrogen envelopes; however, such jets are not able to burrow through the star and will be stalled into the interior of the progenitor star before escaping. These jets are called choked jets. High-energy neutrinos produced by such choked jets could escape the stellar envelope and could be observed. Here, we examine how multimessenger searches for high-energy neutrinos and core-collapse supernovae can detect or limit the fraction of stellar collapses that produce jets. We find that a high fraction of jet production is already limited by previous observational campaigns. We explore possibilities with future observations using Large Synoptic Survey Telescope, IceCube, and Km3NET.

scholarly journals Search for gravitational waves on short duration in TAMA300 data: stellar core collapse and black hole

2008 ◽  
Vol 120 (3) ◽  
pp. 032013
Author(s):  
R Honda ◽  
N Kanda ◽  
T Akutsu ◽  
M Ando ◽  
Y Tsunesada ◽  
...  
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Short Duration ◽  
Core Collapse ◽  
Stellar Core
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