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7–11 Jul 2025
Teaching and Learning Centre (TLC)
Europe/London timezone
Reminder - registration deadline for poster and talk presenters is 6th June (20th June for all other participants).

The FLARES view of early AGN

9 Jul 2025, 10:00
10m
TLC033

TLC033

Talk Active Galactic Nuclei – from ISCO to CGM and from cosmic dawn to the present day Active Galactic Nuclei – from ISCO to CGM and from cosmic dawn to the present day

Speaker

Aswin Payyoor Vijayan (University of Sussex)

Description

A key question in our understanding of super-massive black holes (SMBHs) and active galactic nuclei (AGN) is how they first formed and how they subsequently impacted their hosts. This is one of the objectives of the First Light And Reionisation Epoch Simulations (FLARES), a novel suite of hydrodynamical cosmological zoom simulations. The FLARES strategy allows us to simulate much larger effective volumes than possible with traditional periodic box methods, making it ideal to study the formation and evolution of AGN in the distant Universe.

In this talk I will introduce insights from the first iteration of FLARES (FLARES-EAGLE). I will begin by exploring predictions for the physical properties of SMBHs, and their hosts. I will also discuss the impact of SMBHs on their hosts using insights gained through matched simulations entirely without AGN feedback, or other modelling changes.

Finally, I will introduce a new AGN emission model, combining disc, BLR, NLR, and torus components, incorporated into the open-source synthesizer synthetic observations pipeline. When coupled with FLARES or other simulations, this allows us to predict the rest-frame X-ray to far-IR emission, including line emission. This enables us to make direct comparison with observational surveys, avoiding the need for complex and poorly motivated completeness corrections.

Primary author

Aswin Payyoor Vijayan (University of Sussex)

Co-author

Stephen Wilkins (University of Sussex)

Presentation materials

There are no materials yet.