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| Paper: |
Simulations of the Magneto-rotational Instability in Core-Collapse Supernovae |
| Volume: |
429, Numerical Modeling of Space Plasma Flows, Astronum-2009 |
| Page: |
136 |
| Authors: |
Obergaulinger, M.; Cerdá -Durán, P.; Müller, E.; Aloy, M. A. |
| Abstract: |
We assess the importance of the magneto-rotational instability in
core-collapse supernovae by an analysis of the growth rates of
unstable modes in typical post-collapse systems and by numerical
simulations of simplified models. The interplay of differential
rotation and thermal stratification defines different instability
regimes which we confirm in our simulations. We investigate the
termination of the growth of the MRI by parasitic instabilities,
establish scaling laws characterising the termination amplitude, and
study the long-term evolution of the saturated turbulent state. |
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