Winds and feedback from supermassive black holes accreting at low rates

Mar 07, 2023 - 10:40 am to 11:30 am

Campus, PAB 102/103

Ivan Almeida (Universidade de Sao Paulo) In Person and zoom

Zoom info:

Outflows produced by a supermassive black hole (SMBH) can have significant feedback effects on its host galaxy. Two unresolved questions are: "the nature and properties of winds from SMBHs accreting at low rates in low-luminosity active galactic nuclei (LLAGNs)" and "estimating the impact of these winds". Using numerical simulations, we studied how outflows can be produced in the innermost parts of the accretion disc. Calculating their energy and momentum, we found these winds could carry ~1% of the accreted energy away. The energy carried by the outflows must be deposited in the host galaxy. We built a simplistic model of the interaction between winds and the host galaxy's gas. Our estimates suggest that a long-lived LLAGN can heat the available gas and contribute to the star formation quenching of the galaxy.