Events

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18 February 2020

Strong gravitational lensing as a clean observational probe of dark matter

Le 8 mars 2019 De 10h30 à 12h00 Simona Vegetti (MPA)   The nature of dark matter is one of the most important unsolved problems of modern astrophysics, and strong gravitational lensing is a very promising tool to tackle this issue because the physics of dark matter strongly...

18 February 2020

The exciting life of old stellar clusters

Le 15 février 2019 De 10h30 à 12h00 William Chantereau (Liverpool)   Globular clusters are among the oldest and brightest structures in the Universe, and are therefore witnesses of processes from the early up to the present-day Universe. In turn, they play a major role in...

18 February 2020

A renewed look at Globular Clusters in the era of precision astrometry

Le 1 février 2019 De 10h30 à 12h00 Paolo Bianchini (ObAS)   The traditional picture of Globular Clusters (GCs) as simple stellar systems is being radically revolutionized by the synergistic efforts of theoretical advances and precision astrometry led by Gaia DR2. We now...

18 February 2020

Probing galaxy formation with rotation curves

Le 18 janvier 2019 De 10h30 à 12h00 Lorenzo Posti (ObAS)   Mass and angular momentum (AM) are the two pivotal quantities defining a whole range of structural properties of galaxies, such as their morphology. While cosmology has clear predictions on how much baryons should be...

18 February 2020

Séminaire au Collège de France

Le 14 janvier 2019 De 17h45 à 18h45 Dominique Aubert, professeur à l'Observatoire astronomique de Strasbourg, a donné le 14 janvier 2019 un séminaire au Collège de France sur la simulation de la formation des premières structures. Retrouvez sa présentation ainsi que le...

18 February 2020

Interacting galaxies in MOND

Le 14 décembre 2018 De 10h30 à 12h00 Michal Bilek (ObAS)   The purpose of this talk will be to introduce myself and my work so far. Modified Newtonian Dynamics (aka MOND) is the leading alternative to the dark matter hypothesis in galaxies, suggesting a modification of the...

18 February 2020

Gravitational probes of dark matter

Le 7 décembre 2018 De 10h30 à 12h00 Aurel Schneider (ETH Zurich)   I will discuss the most promising gravitational probes to constrain non-cold or collisional dark matter scenarios. This includes dwarf galaxy statistics, weak lensing, and the global 21-cm signal....