Ratio of energies radiated in the universe through accretive processes and nucleosynthesis

Details Ratio of energies radiated in the universe through accretive processes and nucleosynthesis Ratio of energies radiated in the universe through accretive processes and nucleosynthesis

2003-11-06

arxiv.org/abs/astro-ph/0311146v1

Astron.Astrophys. 411 (2003) 71-76

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures, accepted by Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20031334

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 10^11 Msol galaxy is of about 7 10^7 Msol.

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