We present here a simple and generic model for the luminous ( Q _ { \gamma } \geq 10 ^ { 51 } erg ) and long duration ( t _ { \gamma } \sim 10 s ) Gamma Ray Bursts ( GRBs ) based on the fundamental fact that the General Theory of Relativity ( GTR ) suggests the existence of Ultra Compact Objects ( UCOs ) having surface gravitational red-shift z _ { s } \leq 0.615 even when most stringent constraint is imposed on the equation of state .
This simple model may explain the genesis of an electromagnetic fireball ( FB ) of energy as high as Q _ { FB } \sim 5 \times 10 ^ { 53 } erg and an initial bulk Lorentz Factor as high as \eta \sim 10 ^ { 3 } .