scholarly journals Black Hole Hyperaccretion Inflow–Outflow Model. II. Long-duration Gamma-Ray Bursts and Supernova 56Ni Bumps

2019 ◽  
Vol 871 (1) ◽  
pp. 117 ◽  
Author(s):  
Cui-Ying Song ◽  
Tong Liu
2011 ◽  
Vol 7 (S279) ◽  
pp. 75-82
Author(s):  
Paolo A. Mazzali

AbstractThe properties of the Supernovae discovered in coincidence with long-duration Gamma-ray Bursts and X-Ray Flashes are reviewed, and compared to those of SNe for which GRBs are not observed. The SNe associated with GRBs are of Type Ic, they are brighter than the norm, and show very broad absorption lines in their spectra, indicative of high expansion velocities and hence of large explosion kinetic energies. This points to a massive star origin, and to the birth of a black hole at the time of core collapse. There is strong evidence for gross asymmetries in the SN ejecta. The observational evidence seems to suggest that GRB/SNe are more massive and energetic than XRF/SNe, and come from more massive stars. While for GRB/SNe the collapsar model is favoured, XRF/SNe may host magnetars.


Author(s):  
Andrew King

I consider various possibilities for making gamma-ray bursts, particularly from close binaries. In addition to the much-studied neutron star+neutron star and black hole+neutron star cases usually considered good candidates for short-duration bursts, there are also other possibilities. In particular, neutron star+massive white dwarf has several desirable features. These systems are likely to produce long-duration gamma-ray bursts (GRBs), in some cases definitely without an accompanying supernova, as observed recently. This class of burst would have a strong correlation with star formation and occur close to the host galaxy. However, rare members of the class need not be near star-forming regions and could have any type of host galaxy. Thus, a long-duration burst far from any star-forming region would also be a signature of this class. Estimates based on the existence of a known progenitor suggest that this type of GRB may be quite common, in agreement with the fact that the absence of a supernova can only be established in nearby bursts.


2021 ◽  
Vol 908 (2) ◽  
pp. 242
Author(s):  
Mei Du ◽  
Shuang-Xi Yi ◽  
Tong Liu ◽  
Cui-Ying Song ◽  
Wei Xie

2016 ◽  
Vol 458 (2) ◽  
pp. 1921-1926 ◽  
Author(s):  
Cui-Ying Song ◽  
Tong Liu ◽  
Wei-Min Gu ◽  
Jian-Xiang Tian

2016 ◽  
Vol 463 (1) ◽  
pp. 245-250 ◽  
Author(s):  
Da-Bin Lin ◽  
Zu-Jia Lu ◽  
Hui-Jun Mu ◽  
Tong Liu ◽  
Shu-Jin Hou ◽  
...  

2013 ◽  
Vol 773 (1) ◽  
pp. L7 ◽  
Author(s):  
Lucille H. Frey ◽  
Chris L. Fryer ◽  
Patrick A. Young

1999 ◽  
Vol 526 (1) ◽  
pp. 152-177 ◽  
Author(s):  
Chris L. Fryer ◽  
S. E. Woosley ◽  
Dieter H. Hartmann

2013 ◽  
Vol 87 (8) ◽  
Author(s):  
Nicholas Stone ◽  
Abraham Loeb ◽  
Edo Berger

2011 ◽  
Vol 7 (S279) ◽  
pp. 367-368
Author(s):  
Ken'ichiro Nakazato ◽  
Kohsuke Sumiyoshi

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.


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