General relativistic simulations of magnetic field-induced explosions from stellar core collapse

Details General relativistic simulations of magnetic field-induced explosions from stellar core collapse General relativistic simulations of magnetic field-induced explosions from stellar core collapse

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aps..apr.m8005l&link_type=abstract

American Physical Society, APS April Meeting, April 14-17, 2007, abstract #M8.005

Physics

Scientific paper

The explosion mechanism behind core-collapse supernovae remains an active area of research. In order to explore the role of magnetohydrodynamic (MHD) effects in the explosion, we perform axisymmetric simulations of magnetized, rotating cores collapsing to proto-neutron stars (PNSs) in full general relativity (dynamical spacetime). We confirm that significant differential rotation results even when the rotation of the progenitor is initially uniform. Consequently, the magnetic field is amplified both by magnetic winding and the magnetorotational instability (MRI). Following PNS formation, strong MHD outflows lead to losses of rest mass, energy, and angular momentum from the system which could play a role in rejuvenating a stalled supernova shock.

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