Kavli Affiliate: Debora Sijacki
| First 5 Authors: Rosie Y. Talbot, Debora Sijacki, Martin A. Bourne, ,
| Summary:
Recent observations of Seyfert galaxies indicate that low power, misaligned
jets can undergo significant interaction with the gas in the galactic disc and
may be able to drive large-scale, multiphase outflows. We apply our novel
sub-grid model for Blandford-Znajek jets to simulations of the central regions
of Seyferts, in which a black hole is embedded in a dense, sub-kpc
circumnuclear disc (CND) and surrounded by a dilute circumgalactic medium
(CGM). We find that the variability of the accretion flow is highly sensitive
both to the jet power and to the CND thermodynamics and, ultimately, is
determined by the complex interplay between jet-driven outflows and backflows.
Even at moderate Eddington ratios, AGN jets are able to significantly alter the
thermodynamics and kinematics of CNDs and entrain up to 10% of their mass in
the outflow. Mass outflow rates and kinetic powers of the warm outflowing
component are in agreement with recent observations for black holes with
similar bolometric luminosities, with outflow velocities that are able to reach
500 km/s. Depending on their power and direction, jets are able to drive a wide
variety of large-scale outflows, ranging from light, hot and collimated
structures to highly mass-loaded, multiphase, bipolar winds. This diversity of
jet-driven outflows highlights the importance of applying physically motivated
models of AGN feedback to realistic galaxy formation contexts. Such simulations
will play a crucial role in accurately interpreting the wealth of data that
next generation facilities such as JWST, SKA and Athena will provide.
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