S E M I N A R I

Departament d'Astronomia i Astrofísica
Universitat de València

    Termination of the magnetorotational instability via the parasitic Kelvin-Helmholtz instability in core-collapse supernovae

Tomasz Rembiasz

Max Planck Institut fuer Astrophysik, Garching, Alemanya


Seminari del departament d'Astronomia i Astrofisica

Dimecres 04 febrer 2015

12:30


Resum

Magnetorotational instability (MRI) is one of the most promising agents significantly amplifying magnetic fields in (resulting from rapidly rotating progenitors) core-collapse supernovae (CC-SNe). The initial phase of the MRI (of the exponential growth) is well understood, however its exact termination mechanism remains unknown. In this talk, we present our newest results clearly indicating that the MRI, given CC-SN conditions, is terminated by the parasitic Kelvin-Helmholtz instability. This allows us to set the limit on the maximum magnetic field amplification by the MRI.