Phenomenological Aspects of Supernova Neutrinos

por Ricard Tomas (IFIC)

miércoles 1 mar. 2006 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Core-collapse Supernovae (SNe) are one of the most energetic explosive events known. These occur at the end of a massive ($M \gtrsim 8 M_\odot$) star's lifetime, and implies an energy release of the order of $O(10^{53})~erg$. From a particle physics point of view neutrinos turn out to be essential in such events. First they are thought to play a key role during the explosion phase and in the posterior cooling and deleptonization of the star. On the other hand they are responsible to carry away around $99\%$ of the total energy emitted. Therefore these neutrinos could be easily detected in the case of a nearby supernova in the existent or planned neutrino detectors, what could provide a lot of information about both neutrino properties and the supernova itself. In this talk I will give an overview on the phenomenology involving these neutrinos. I will review the main features of the neutrino spectra and their propagation through the SN envelope, as well as the current related uncertainties. Then I will describe the expected signal in the case of a future galactic SN, and its implications in the determination of neutrino properties and SN physics.