Some Astrophysical Implications of Experimentally Favored Neutrino Masses and Mixings

Positive evidence for neutrino oscillations is mounting from the solar and atmospheric neutrino anomalies and the LSND experiment. Accordingly, the neutrino mass differences appear to lie in the sub-eV range and at least some of the mixing angles appear to be large. We explore some of the consequences of this picture for supernova (SN) physics and cosmology. In particuler, we discuss if a conflict between the solar vacuum solution and the SN 1987A signal can be avoided, and the role of future cosmic microwave background measurements to reveal the presence of a cosmological hot dark matter component.