June 2024

27/06/24 (Thursday)
15:15, Auditorium Telescopium (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — SRG/eROSITA: highlights from the all-sky survey first data release
Andrea Merloni (MPE)

Abstract

Wide-area, sensitive X-ray surveys map the hot and energetic Universe to reveal key processes across many areas of astrophysics and Cosmology, including the most massive collapsed structures of the Universe
(clusters and groups of galaxies), the hot ISM and CGM of the Milky Way and the 
Supernova remnants that energise it, the atmospheres of neutron stars, 
the magnetic coronae of accretion discs around black holes, and many more.
eROSITA (extended ROentgen Survey with an Imaging Telescope Array), the 
soft X-ray instrument on the Russian-German Spektrum-Roentgen-Gamma 
(SRG) mission  is expanding the horizon of 
X-ray astronomy and delivering large legacy samples thanks to its high sensitivity, large field of view, high
spatial resolution and survey efficiency. I will present an overview of the instrument capabilities, the current status of the mission, and a few early science results from the survey program selected from the first data release.

July 2024

04/07/24 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — The circumgalactic medium: What is it and how does it affect the evolution of galaxies?
Claude-Andre Faucher-Giguere (Northwestern University)

Abstract

While galaxies stand out as the brightest lights observed by telescopes, most of the atoms in the Universe are in diffuse gas outside of galaxies. The circumgalactic medium, or CGM, refers to the massive gas halos surrounding galaxies. In addition to containing large quantities of matter, the CGM is where some of the main processes driving and regulating galaxy formation operate. This talk will begin with a broad introduction to the CGM, then focus on recent results from our group concerning a key phase transition in the CGM, known as "virialization," during which the CGM transforms from cold to hot. I will discuss theoretical predictions, based on a combination of analytic modeling and simulations, for how the CGM virializes. I will also summarize results on the connections between CGM virialization and the evolution of galaxies, including the transition from bursty to steady star formation and the emergence of disk galaxies similar to the Milky Way. The predicted bursty phase of star formation enhances the abundance of bright galaxies and, in our simulations, plays a critical role in explaining the luminosity function measured by the James Webb Space Telescope at very high redshift.

11/07/24 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — (topic to be announced)
Fabrizio Arrigoni Battaia (MPA)
18/07/24 (Thursday)
15:15, Auditorium Telescopium (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — (topic to be announced)
Ralph Pudritz (McMaster University)

October 2024

10/10/24 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — (topic to be announced)
Irene Tamborra (Niels Bohr Institute, University of Copenhagen)

January 2025

16/01/25 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — to be announced
Laura V. Sales (University of California Riverside)