Neutrino transport and hydrodynamic stability of rotating proto-neutron stars
نویسنده
چکیده
Aims. We study stability of differentially rotating non-magnetic proto-neutron stars. Methods. Linear stability properties are considered taking into account neutrino transport. Results. If neutrino transport is efficient, the star can be subject to a diffusive instability that can occur even in the convectively stable region. The instability arises on the time-scale comparable to the time-scale of thermal diffusion. Conclusions. Hydrodynamic motions driven by the instability can lead to anisotropy in the neutrino flux since the instability is suppressed near the equator and rotation axis.
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