Abstract
We continue our investigation of plane-parallel neutrino atmospheres in hydrostatic equilibrium by relaxing one of the assumptions made in Paper I and allowing transport by all the flavors of neutrinos: electron, ..mu.., and tau. As in Paper I, we assume that the gas through which the neutrinos flow consists of free, nondegenerate, nonrelativistic nucleons, extreme relativistic positrons and electrons of arbitrary degeneracy, and photons. We do not allow for the presence of muons and tauons, since typical temperatures and chemical potentials are well below their rest energies. The atmosphere is constrained to be in hydrostatic equilibrium, and energy flux and the three lepton number fluxes are required to be conserved. The numerical method used is that described in Paper II, with the added constraints that ..mu.. and tau lepton number fluxes are constant throughout the atmosphere. Since ..mu.. and tau neutrinos are allowed to interact only via scattering and pair production-absorption processes, lepton number conservation is imposed only at the base of the atmosphere, and should be automatically conserved in layers above the base.
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