Galaxy-scale contributions of black hole hyperaccretions in the center of core-collapse supernovae

Abstract

Core-collapse supernovae (CCSNe) are dramatic explosions of the massive stars at the end of their lives, which produce most of neutron stars and stellar-mass black holes in the Universe. The explosions might be associated with long-duration gamma-ray bursts originating from the black hole fallback hyperaccretions or neutron stars with strong magnetic fields. CCSNe are also considered to be one of the main factories of the heavy elements. In this review, I briefly introduce our recent work on the black hole hyperaccretions in the center of CCSNe. We studied the effects of dark matter annihilation on the shapes of the light curves and spectra in the gamma-ray burst afterglows near the galaxy centers, which might be considered as a possible detection method for dark matter. We also studied nucleosynthesis of the disk outflows from neutrino-dominated accretion flows in the collapsar scenario, and their contributions to the chemical components and evolutions of the solar neighborhood and (active) galaxies. Finally, we simulated the explosions of CCSNe and demonstrated that the distributions of the explosion energies might lead to the lower mass gap of compact remnants.