[Astro] Seminar this week: Romeel Dave

[Jesse Golden-Marx (staff)]

Hi Everyone,
      This week's seminar speaker is Prof. Romeel Dave (Edinburgh).  Romeel will be arriving late on Tuesday evening then spending the day with our department.  He's planning to arrive to the CAPT building around 10 on Wednesday.

As always, the seminar will be in C4 on Wednesday at 15:45.  If you would like to join for lunch (~13:00 on Wednesday, likely at Lakeside Arts), please let me (Jesse) know by tomorrow afternoon.  As usual, we can sponsor a few postgraduates to join.  The schedule is listed below:

10:00 — Romeel arrives
13:00 — Lunch with the speaker
15:00 — Meeting with the seminar speaker for the postgraduates (A113)
15:45 — Seminar
16:45 — Wine and Cheese

The seminar and abstract can be found below.  Hope to see you all on Wednesday.

Cheers,
Jesse, Luke, and Tutku



How massive galaxies quench in the Simba simulations

Cosmological simulations of galaxy formation have matured rapidly in the last few years, with recent models combining structure formation, hydrodynamics, stellar and black hole growth, and associated feedback processes to accurately reproduce key demographical properties observed in the galaxy population.  Our group's Simba simulation suite includes unique input physics that have dramatic implications particularly for the growth and quenching of massive galaxies.  I will show how Simba's AGN jet feedback impacts the surrounding circum-galactic and intergalactic medium on surprisingly large scales.  Using the Hyenas zoom simulations based on Simba, I will further show how Simba's jets blow X-ray cavities as observed, depositing energy and evacuating halo gas, the first time this has been demonstrated within a full hierarchical galaxy formation context.  Such feedback also goes helps explain some puzzling trends seen in the stellar-to-halo mass relation and the matter power spectrum.



Jesse Golden-Marx, Ph.D.
Senior Research Associate

Centre for Astronomy & Particle Theory
School of Physics & Astronomy
University of Nottingham
University Park, Nottingham, UK
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