T. Fischer, M. Liebendörfer, F. -K. Thielemann, G. Martínez-Pinedo, B. Ziebarth, K. Langanke
We examine simulations of core-collapse supernovae in spherical symmetry. Our
model is based on general relativistic radiation hydrodynamics with
three-flavor Boltzmann neutrino transport. We discuss the different supernova
phases, including the long-term evolution up to 20~seconds after the onset of
explosion during which the neutrino fluxes and mean energies decrease
continuously. In addition, the spectra of all flavors become increasingly
similar, indicating the change from charged- to neutral-current dominance.
Furthermore, it has been shown recently by several groups independently, based
on sophisticated supernova models, that collective neutrino flavor oscillations
are suppressed during the early mass-accretion dominated post-bounce evolution.
Here we focus on the possibility of collective flavor flips between electron
and non-electron flavors during the later, on the order of seconds, evolution
after the onset of an explosion with possible application for the
nucleosynthesis of heavy elements.
View original:
http://arxiv.org/abs/1112.5528
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