ausblenden:
Schlagwörter:
Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE,General Relativity and Quantum Cosmology, gr-qc
Zusammenfassung:
We performed the longest numerical-relativity neutrino-radiation
magnetohydrodynamics simulation for a binary neutron star merger that extends
to $\approx1.5\mathrm{\,s}$ after the merger. We consider the binary model that
undergoes the prompt collapse to a black hole after the merger with asymmetric
mass 1.25$\,M_{\odot}$ and 1.65$\,M_{\odot}$ and SFHo equation of state. We
find the Poynting flux-driven collimated outflow as well as the gravitational
wave emission, neutrino emission, dynamical mass ejection, and post-merger mass
ejection facilitated by magnetorotational instability-driven turbulent
viscosity in a single self-consistent binary neutron star merger simulation. A
magnetosphere dominated by the aligned global magnetic field penetrating the
black hole develops along the black-hole spin axis after the turbulence in the
remnant disk is enhanced. A jet with the Poynting flux with
isotropic-equivalent luminosity of $\sim10^{49}\mathrm{\,erg/s}$ is launched,
and the duration of the high luminosity is expected to be $O(1)\mathrm{\,s}$.
