New vistas in neutrino astrophysics

Abstract

Neutrinos produced by thermonuclear reactions in the core of the Sun can get out of it unaffected. Observing these neutrions in Earth-based experiments enables one to study how the SUD generates its energy and verify the theories of neutrino astrophysics. Neutrinos from the collapse ofSN1987A are not only important for what they have taught us about them but also for the confirmation of the principal features of the theoretical picture of the star collapse. These observations indicate the possibility that neutrinos may not be exactly zero-mass particles but may possess very small mass and magnetic moments. Extension of standard model is needed to accommodate massive neutrinos with magnetic moment