High common residual velocities of remnants of supernovae is observable fact. This my scenario of supernova explosion completely contradicts to the general accepted ideas of collapse of supernova into black hole. I exclude the black holes in the form of a funnel. But I do not exclude the black holes in the form of a bubble. If we move from this radius r to the center, the pressure and density of the matter will decreased.
Quasars are the galactic cores with the holes in the shell.
They look like the above mentioned supernovae, but their dimensions are much more bigger. The shell of quasar has constant, slightly variable holes. The radiation inside of the shell of quasar has the temperature, less then the temperature of supernova radiation. Through the holes of quasar's shell the radiation and high temperature ionized gas strives outside. As a result, we can see huge jets, extended far from some galaxies.