Seminar

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25 October 2024

Séminaire – Ian Hothi (LPENS, obspm)

"Exploring the Epoch of Reionization with Scattering Transforms" Scattering transforms have proven to be a powerful statistical tool for characterizing non-Gaussian processes across various astrophysical contexts. In this presentation, we extend their application to the 21cm signal from the...

18 October 2024

Séminaire – Brandon Hensley (JPL)

"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)...

11 October 2024

Séminaire – Etienne Bonnassieux (Wurzburg)

"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,...

4 October 2024

Séminaire – Harry Desmond (Portsmouth)

"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...

20 September 2024

Séminaire – Clément Stahl (ObAS)

"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...

13 September 2024

Séminaire – David Williams (Manchester)

"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...

28 June 2024

Séminaire – Tobias Mistele (Case Western)

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...

21 June 2024

Séminaire – Jenny Wagner (BASIC)

"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...

7 June 2024

Séminaire – Knud Jahnke (MPIA)

"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 -...