Ratio of energies radiated in the universe through accretive processes and nucleosynthesis
Abstract
We present here a new determination of the ratio of energies radiated by active galactic nuclei and by stars and discuss the reasons for the apparently conflicting results found in previous studies. We conclude that the energy radiated by accretion processes onto super massive black holes is about 1 to 5% of the energy radiated by stars. We also estimate that the total mass accreted on average by a super massive black hole at the centre of a typical 1011 Msol galaxy is of about 7 107 Msol.
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