Magnetorotational Explosions of Core-Collapse Supernovae

Authors

  • Gennady S. Bisnovatyi-Kogan Space Research Institute, Profsoyuznaya str. 84/32, Moscow 117997, Russia, and National Research Nuclear University "MEPHI", Kashirskoye Shosse, 31, Moscow 115409
  • Sergey G. Moiseenko Space Research Institute, Profsoyuznaya str. 84/32, Moscow 117997, Russia
  • Nikolay V. Ardeljan Department of Computational Mathematics and Cybernetics, Moscow State University, Vorobjevy Gory, Moscow B-234, Russia

DOI:

https://doi.org/10.14311/APP.2014.01.0181

Abstract

Core-collapse supernovae are accompanied by formation of neutron stars. The gravitation energy is transformed into the energy of the explosion, observed as SN II, SN Ib,c type supernovae. We present results of 2-D MHD simulations, where the source of energy is rotation, and magnetic eld serves as a "transition belt" for the transformation of the rotation energy into the energy of the explosion. The toroidal part of the magnetic energy initially grows linearly with time due to dierential rotation. When the twisted toroidal component strongly exceeds the poloidal eld, magneto-rotational instability develops, leading to a drastic acceleration in the growth of magnetic energy. Finally, a fast MHD shock is formed, producing a supernova explosion. Mildly collimated jet is produced for dipole-like type of the initial field. At very high initial magnetic field no MRI development was found.

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Published

2014-12-04

Issue

Vol. 1 No. 1 (2014): FRASCATI WORKSHOP 2013

Section

Articles

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