2024-10-18 Abstract
Title: The Mass Assembly of High-Redshift Central Black Holes and the Emergence of Jetted AGN
Speaker: Dr. Olmo Piana (NTNU)
Date: October 18 at 14:30
Location: R521, General Building II
Abstract:
Multiple questions about the early accretion rates and feedback of high-redshift supermassive black holes are still open. Most numerical simulations and semi-analytic models are able to reproduce the available high-z observables despite implementing different models of early (z>10) black hole growth and feedback. Using a comprehensive cosmological model of galaxy and black hole formation and evolution (DELPHI), we aim to break this degeneracy by showing how different black hole growth models impact quasar and galaxy observables at z>5 in the intermediate-mass range. This can provide guidance for future observational surveys carried out by upcoming missions such as LISA and ATHENA. Adding physically-motivated assumptions on the spin and magnetic flux of the black hole, we can also study the emergence of jetted AGN, focusing on their duty cycle across a wide halo mass range, achieving a better understanding of the role jets play in galaxy evolution.