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Turbulent magnetic field amplification from spiral SASI modes in core-collapse supernovae

Journal Article · · Journal of Physics. Conference Series
 [1];  [2];  [3];  [4]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division, and Joint Inst. for Heavy Ion Research; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division, and Physics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
We describe the initial implementation of magnetohydrodynamics (MHD) in our astrophysical simulation code GENASIS. Then, we present MHD simulations exploring the capacity of the stationary accretion shock instability (SASI) to generate magnetic fields by adding a weak magnetic field to an initially spherically symmetric fluid configuration that models a stalled shock in the post-bounce supernova environment. Upon perturbation and nonlinear SASI development, shear flows associated with the spiral SASI mode contributes to a widespread and turbulent field amplification mechanism. While the SASI may contribute to neutron star magnetization, these simulations do not show qualitatively new features in the global evolution of the shock as a result of SASI-induced magnetic field amplification.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI ID:
1567298
Alternate ID(s):
OSTI ID: 22084347
Journal Information:
Journal of Physics. Conference Series, Journal Name: Journal of Physics. Conference Series Vol. 402; ISSN 1742-6588
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Turbulence and magnetic field amplification from spiral SASI modes in core-collapse supernovae journal July 2013
Genasis: General Astrophysical Simulation System. i. Refinable mesh and Nonrelativistic Hydrodynamics journal January 2014
GenASiS: General Astrophysical Simulation System. II. Nonrelativistic Hydrodynamics preprint January 2012

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