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| Paper: |
The radio dichotomy of quasars in cosmological simulations of galaxy formation |
| Volume: |
290, Active Galactic Nuclei: from Central Engine to Host Galaxy |
| Page: |
603 |
| Authors: |
Cattaneo, A. |
| Abstract: |
I have studied the mass and spin evolution of supermassive black holes in Monte Carlo simulations of galaxy formation based on the Press-Schechter formalism. In field galaxies the black holes acquire most of their mass in a single accretion event, while refuellings and mergers with other black holes become more important in groups and clusters. I have also investigated if the assumption that radio jets are powered by the black hole rotation can explain the observed dichotomy in the radio properties of quasars. The simulations can reproduce a good agreement with the data but only if the accretion disc structure is such that effective despinning is still possible at high accretion rates close to the Eddington limit. The scenario considered in this study predicts that radio-loud quasars accrete matter at a lower fraction of the Eddington limit than radio-quiet ones. |
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