Seminars and Colloquia at ESO Garching and on the campus

April 2019

23/04/19 (Tuesday)
11:00, MPA Large Seminar Room E.0.11 (MPA, Garching) | ESO Garching
Cosmology Seminar
Talk — Moving and creating cold gas around galaxies
Max Gronke (UCSB)
16:15, MPP, Freimann, Munich | ESO Garching
MPP Kolloquium
Talk — The Cosmological Bootstrap
Daniel Baumann (Univ. of Amsterdam)
24/04/19 (Wednesday)
10:45, Library (ESO HQ, Garching) | ESO Garching
Informal Discussion
Talk — Imaging black holes
Jason Dexter (MPE)

Abstract

In the last 6 months, the VLTI/GRAVITY and Event Horizon Telescope experiments have ushered in a new era of spatially resolved studies of event horizon scales around massive black holes. I will discuss the experiments, their first results, and the implications for understanding the role of magnetic fields in black hole accretion and jet launching and for future tests of strong field general relativity.

11:00, MPA Old Lecture Hall 401 | ESO Garching
SESTAS
Talk — New Light on Standard Candles: Testing Hubble Tension using High-precision Observations of Cepheid Variable Stars
Richard I. Anderson (ESO)
25/04/19 (Thursday)
11:10, Library (ESO HQ, Garching) | ESO Garching
AGN Club
Talk — (topic to be announced)
Johannes Buchner (MPE)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — The empirical bases of the SN-GRB connection
Massimo Della Valle (INAF, Osservatorio Astronomico di Capodimonte)

Abstract

We review the status of the Supernova/Gamma-Ray Burst connection. Several pieces of evidence suggest that long duration Gamma-ray Bursts (GRBs) are associated with type Ic Supernovae (SNe). Current estimates of SN and GRB rates show that only a tiny fraction of massive stars, likely less than 2%, are able to produce GRBs. The reasons for this small ratio will be discussed.

29/04/19 (Monday)
10:45, Library (ESO HQ, Garching) | ESO Garching
KES: Knowledge Exchange Series
Talk — Hands on tutorial with IllustrisTNG public data
Dylan Nelson (MPA)
30/04/19 (Tuesday)
12:00, Library (ESO HQ, Garching) | ESO Garching
Lunch Talk
Talk — The molecular gas reservoirs of z~2 galaxies: Comparing dust continuum and CO observations
Melanie Kaasinen (MPIA, Heidelberg)

Abstract

We compare resolved and unresolved observations of the CO and dust continuum emission from star-forming galaxies at z~2. The molecular gas phase of the interstellar medium is a crucial component of star-forming galaxies, hosting, and providing the fuel for, star formation. Constraining the total mass and spatial distribution of molecular gas is therefore critical to understanding the evolutionary state of a galaxy, which can be characterised by how efficiently, and where, star formation is occurring. To determine the total molecular gas mass of high-z galaxies, the community currently relies on two main approaches: measuring either (1) a CO line luminosity, or, (2) dust continuum emission. These molecular gas tracers have been observed for large samples of high-z galaxies with ALMA, and it is assumed that the two lead to equivalent measurements of the molecular gas content. But, recent low-resolution imaging indicates that the CO and dust continuum may trace different galactic regions, with the dust continuum emission being more centrally concentrated. In this talk I will present our comparisons of the CO and dust-derived molecular gas properties of Main Sequence galaxies at z~2 and will discuss the implications for future molecular gas studies with ALMA.

May 2019

02/05/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — GAIA results and discoveries
Vasily Belokurov (University of Cambridge)
03/05/19 (Friday)
14:00, MPA Large Seminar Room E.0.11 (MPA, Garching) | ESO Garching
Bayes Forum
Talk — On Model Selection in Cosmology
Martin Kerscher (LMU Munich)

Abstract

I will review some of the common methods for model selection: the goodness of fit, the likelihood ratio test, Bayesian model selection using Bayes factors, and the classical as well as the Bayesian information theoretic approaches. I will illustrate these different approaches by comparing models for the expansion history of the Universe. I will highlight the premises and objectives entering these different approaches to model selection and finally recommend the information theoretic approach.

07/05/19 (Tuesday)
12:00, Library (ESO HQ, Garching) | ESO Garching
Lunch Talk
Talk — (topic to be announced)
Michael Meyer (University of Michigan)
09/05/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — Exoplanet Atmosphere Characterization, Present and Future
Laura Kreidberg (CfA Harvard)

Abstract

We now know that exoplanets abound in the Galaxy, with most stars hosting at least one planet. These recently discovered worlds are much more diverse than the planets in the Solar System, and raise many questions about their formation, evolution, and habitability. To address these questions, we turn to atmosphere characterization, which provides a wealth of additional information about the planets. I will discuss the state of the art in atmosphere studies, focusing on recent high-precision, space-based observations of hot Jupiters and warm Neptunes. These studies have already revealed planetary atmospheric chemistry, climate, and cloud coverage in unprecedented detail, and they are poised for a revolutionary advance thanks to a series of new and upcoming missions. I will conclude with a discussion of prospects for characterization of temperate, terrestrial worlds with future facilities.

10/05/19 (Friday)
14:00, Library (ESO HQ, Garching) | ESO Garching
Stellar Coffee and Planetary Tea
Talk — (topic to be announced)
Misa Aoki (ESO)
13/05/19 (Monday)
10:45, Library (ESO HQ, Garching) | ESO Garching
KES: Knowledge Exchange Series
Talk — Astrophotos: Improve your paper visually
Mahdi Zamani (ESO)
14/05/19 (Tuesday)
12:00, Library (ESO HQ, Garching) | ESO Garching
Lunch Talk
Talk — (topic to be announced)
Paola Popesso (TUM)
16/05/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — Cosmic Magnetism
Sui Ann Mao (Max Planck Institute for Radioastronomy)
21/05/19 (Tuesday)
12:00, Library (ESO HQ, Garching) | ESO Garching
Lunch Talk
Talk — (topic to be announced)
Hugo Messias (ALMA Observatory)
23/05/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — Ly alfa haloes
Joël Vernet (ESO)
27/05/19 (Monday)
10:45, Library (ESO HQ, Garching) | ESO Garching
KES: Knowledge Exchange Series
Talk — Introduction to Optical and Infrared Detector Systems for ground based astronomy
Derek Ives (ESO)

June 2019

06/06/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — (topic to be announced)
Mathilde Jauzac (Durham University)
13/06/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — Chemical evolution of the Milky Way
Else Starkenburg (Leibniz-Institut für Astrophysik Potsdam)
27/06/19 (Thursday)
15:15, Auditorium Eridanus (ESO HQE, Garching) | ESO Garching
Munich Joint Astronomy Colloquium
Talk — Evolution of ICM Structure, Metallicity and BCGs out to z~1.7 with SPT Clusters
Michael McDonald (MIT Kavli Institute)

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Past Talks

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