2020MNRAS.494.4665P -
Mon. Not. R. Astron. Soc., 494, 4665-4675 (2020/June-1)
Three-dimensional core-collapse supernova simulations of massive and rotating progenitors.
POWELL J. and MULLER B.
Abstract (from CDS):
We present 3D simulations of the core-collapse of massive rotating and non-rotating progenitors performed with the general relativistic neutrino hydrodynamics code COCONUT-FMT. The progenitor models include Wolf-Rayet stars with initial helium star masses of 39 M☉ and 20 M☉, and an 18 M☉ red supergiant. The 39 M☉ model is a rapid rotator, whereas the two other progenitors are non-rotating. Both Wolf-Rayet models produce healthy neutrino-driven explosions, whereas the red supergiant model fails to explode. By the end of the simulations, the explosion energies have already reached 1.1×1051 and 0.6×1051 erg for the 39 M☉ and 20 M☉ model, respectively. They produce neutron stars of relatively high mass, but with modest kicks. Due to the alignment of the bipolar explosion geometry with the rotation axis, there is a relatively small misalignment of 30° between the spin and the kick in the rapidly rotating 39 M☉ model. For this model, we find that rotation significantly changes the dependence of the characteristic gravitational-wave frequency of the f-mode on the proto-neutron star parameters compared to the non-rotating case. Its gravitational-wave amplitudes would make it detectable out to almost 2 Mpc by the Einstein Telescope. The other two progenitors have considerably smaller detection distances, despite significant low-frequency emission in the most sensitive frequency band of current gravitational-wave detectors.
Abstract Copyright:
© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
Journal keyword(s):
gravitational waves - hydrodynamics
Simbad objects:
3
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