Flux-limited neutrino diffusion for moving media.

Details Flux-limited neutrino diffusion for moving media. Flux-limited neutrino diffusion for moving media.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...298..863v&link_type=abstract

Astronomy and Astrophysics, v.298, p.863

Astronomy and Astrophysics

Astrophysics

2

Elementary Particles, Hydrodynamics, Supernovae: General Methods: Analytical

Scientific paper

We formulate a spectral flux-limited neutrino transport scheme for hydrodynamical media such as type-II supernovae. It is special-relativistic to O(v/c), retains all Doppler terms, and is momentum conserving through the inclusion of static and dynamic artificial opacity. Our numerical transport calculations on a stellar background model illustrate how the material velocity field affects the neutrino flux and energy transfer to the matter. In particular, the transport scheme yields higher neutrino energy deposition in matter moving inward. The Doppler terms are found to be the main contribution to the dynamic artificial opacity and to lead to significant spectral shifts.

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