Details

Autor(en) / Beteiligte

• Fujibayashi, Sho
• Takahashi, Koh
• Sekiguchi, Yuichiro
• Shibata, Masaru

Titel

Ultra-delayed Neutrino-driven Explosion of Rotating Massive-star Collapse

Ist Teil von

• The Astrophysical journal, 2021-10, Vol.919 (2), p.80

Ort / Verlag

Philadelphia: The American Astronomical Society

Erscheinungsjahr

2021

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Abstract Long-term neutrino-radiation hydrodynamics simulations in full general relativity are performed for the collapse of rotating massive stars that are evolved from He-stars with initial masses of 20 and 32 M ⊙ . It is shown that if the collapsing stellar core has sufficient angular momentum, the rotationally supported proto-neutron star (PNS) survives for seconds accompanying the formation of a massive torus of mass larger than 1 M ⊙ . Subsequent mass accretion onto the central region produces a massive and compact central object, and eventually enhances the neutrino luminosity beyond 10 53 erg s −1 , resulting in a very delayed neutrino-driven explosion, in particular toward the polar direction. The kinetic energy of the explosion can be appreciably higher than 10 52 erg for a massive progenitor star and compatible with that of energetic supernovae like broad-line type-Ic supernovae. By the subsequent accretion, the massive PNS collapses eventually into a rapidly spinning black hole, which could be a central engine for gamma-ray bursts if a massive torus surrounds it.