  It is understood that the Supernovae (SNe) associated to Gamma Ray Bursts
(GRBs) are of type Ib/c. The temporal coincidence of the GRB and the SN
represents still a major enigma of Relativistic Astrophysics. We elaborate
here, from the earlier paradigm, that the concept of induced gravitational
collapse is essential to explain the GRB-SN connection. The specific case of a
close (orbital period <1 h) binary system composed of an evolved star with a
Neutron Star (NS) companion is considered. We evaluate the accretion rate onto
the NS of the material expelled from the explosion of the core progenitor as a
type Ib/c SN, and give the explicit expression of the accreted mass as a
function of the nature of the components and binary parameters. We show that
the NS can reach, in a few seconds, the critical mass and consequently
gravitationally collapses to a Black Hole. This gravitational collapse process
leads to the emission of the GRB.
