Neutrino transport in gravitationnal supernovæ simulations : a simplified treatment via a leakage scheme

Details Neutrino transport in gravitationnal supernovæ simulations : a simplified treatment via a leakage scheme Neutrino transport in gravitationnal supernovæ simulations : a simplified treatment via a leakage scheme

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sf2a.conf..601p&link_type=abstract

SF2A-2011: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: G. Alecian, K. Belkacem,

Astronomy and Astrophysics

Astrophysics

Supernova, Neutrino, Numerical Methods

Scientific paper

We present a leakage scheme, a simplified model for the treatment of the neutrinos in core collapse supernovæ simulations. In the leakage scheme, the neutrinos are considered either fully at equilibrium with the fluid or streaming out freely. This approach is a quite rough approximation compared to a full transport scheme (Boltzmann solver), but it is much less CPU time consuming and hence is well suited, e.g., for parameter studies. This scheme has been written for CoCoNuT, a general relativistic hydrodynamics code which uses Godunov type methods.

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