Neutrino physics and astrophysics with the MACRO experiment at the Gran Sasso lab

The results of the MACRO experiment on atmospheric neutrino oscillations are presented and discussed. The data concern different event topologies with average neutrino energies of ~ 4 and ~50 GeV. The Multiple Coulomb Scattering of muons in the MACRO absorbers was used to estimate the neutrino energy of each event of the higher energy sample. The angular distributions, the absolute fluxes and the L/E distribution strongly favour n m ® n t oscillations with maximal mixing and deltam² = 0:0025 eV². Results are presented on the searches for ast...