Corpus ID: 233210071

Fallback Accretion Halted by R-process Heating in Neutron Star Mergers and Gamma-Ray Bursts

@inproceedings{Ishizaki2020FallbackAH,
  title={Fallback Accretion Halted by R-process Heating in Neutron Star Mergers and Gamma-Ray Bursts},
  author={Wataru Ishizaki and Kenta Kiuchi and Kunihito Ioka and Shinya Wanajo},
  year={2020}
}
The gravitational wave event GW170817 with a macronova/kilonova shows that a merger of two neutron stars ejects matter with radioactivity including r-process nucleosynthesis. A part of the ejecta inevitably falls back to the central object, possibly powering long-lasting activities of a short gammaray burst (sGRB), such as extended and plateau emissions. We investigate the fallback accretion with the r-process heating by performing one-dimensional hydrodynamic simulations and developing a semi… Expand