Turbulent magnetic field amplification from spiral SASI modes in core-collapse supernovae
Journal Article
·
· Journal of Physics. Conference Series
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
- 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
- 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
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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