Schedule Feb 07, 2006
Asymmetric Supernovae
Thomas Janka (MPA, Garching)

Hydrodynamic instabilities -- of convective nature or based on the action of a vortical-acoustic cycle or pressure-wave amplification -- in the neutrino-heated postshock layer during the phase of shock stagnation can grow to global asymmetries of neutrino-driven supernova explosions. The talk discusses the status of the numerical modeling andthe possible implications of these instabilities for pulsar kicks and observable anisotropies of core-collapse supernovae. In particular, simulations are presented which demonstrate that major observational properties of SN 1987A may be explained by such instabilities without invoking rapid rotation in the core of the exploding star.

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