© 2025 Observatoire Astronomique de Strasbourg | Webdesign et développement Alchimy.
"Modeling interstellar dust" Interstellar dust has long been modeled with separate silicate and graphite/amorphous carbon components. In this talk, I will argue that initially distinct populations of carbonaceous and silicate stardust get rapidly homogenized in the interstellar medium (ISM)...
"Exploring the magnetic field properties of the Mpc-scale jet plasma in OJ287" The BL Lacerta object OJ287 , located at z = 0.306 is a very unusual object, as it is suspected of hosting a binary black hole system which powers a relativistic blazar jet. New LOFAR observations of this source,...
"Four ways of looking at the radial acceleration relation" The radial acceleration relation (RAR) is a strong correlation of late-type galaxy dynamics, seeming to describe a mysterious link between baryonic and total dynamical mass. Its properties are so striking that it has even been argued...
"A Non-Gaussian Universe?" Modifying the unconstrained small-scale initial conditions of the Universe could be a game changer for our understanding of cosmic structure formation and address challenges in small-scale galaxy formation. In this talk, I will present you my investigations of the...
"Using e-MERLIN to investigate the radio emission in nearby galaxies from AGN to star formation" The nearby Universe (<150 Mpc) is rich with all types of galaxies, active galactic nuclei (AGN) and star formation (SF). Many of these galaxies have been the subject of large programmes in...
"Galactic scaling relations out to hundreds of kpc from weak lensing" The dynamical properties of galaxies exhibit strong regularities such as the Baryonic Tully-Fisher Relation and the Radial Acceleration Relation (RAR). The RAR relates the baryonic Newtonian acceleration $g_"bar"$ and the...
"Where my DAEMON hides -- The emergence of self-similar cosmic structures" Large-scale N-body simulations have successfully reconstructed cosmic structure formation with increasing resolution and complexity, as observations corroborate. Complementary efforts have arrived at a hydrodynamical...
"FAIR & open data publication at CDS -- focusing on VizieR" VizieR is one of the three main CDS services, along with SIMBAD andAladin which complement each other. It provides the most completelibrary of published astronomical catalogs --currently ~25,200-- withverified and enriched data,...
"Euclid - the first year in space" After more than a dozen years of development, Euclid has been launched almost a year ago and started its 6 year extragalactic surveys early 2024. I will provide an overview over the mission, its core science, and will show a few of the first public images -...
"Présentation des bilans GES et des actions pour réduire notre empreinte environnementale à...