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The spin evolution of supermassive black hole

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If you have a question about this talk, please contact Tobias Baldauf.

Astrophysical (supermassive) black holes (SMBHs) are ultimately characterised by mass and spin. However, virtually all state-of-the-art hydrodynamical simulations of the assembly of galaxies neglect the spin due to limitations in resolving the gas flow in the proximity of the BH. Nonetheless, spin plays a crucial role in modulating both mass accretion and power emission, driving jet feedback, and determining recoil velocity of coalescing SMBH binaries in response to gravitational wave emission. In this talk, I will describe the new results from the recent implementation of a new accretion model that accounts for spin evolution in hydrodynamical simulations of galactic nuclei. I will also discuss some preliminary results on the dynamics and spin evolution in SMBH binaries surrounded by self-gravitating circumbinary discs.

This talk is part of the Cosmology Lunch series.

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