Events

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25 September 2025

Soutenance de thèse – Mei PALANQUE – 10h00

"New radiative transfer methods in numerical simulation of the epoch of reionisation" In current cosmological simulations, the radiative transfer modules generally rely on the M1 approximation, which has some glaring flaws related to its fluid-like behaviour, such as spurious pseudo-sources and...

19 September 2025

Séminaire – Luc Blanchet (IAP)

"Dark matter and the MOND phenomenology in galaxies." We discuss the phenomenology of dark matter at galactic scales and the intriguing MOND (Modified Newtonian Dynamics) formula for the rotation curves of galaxies, the baryonic Tully-Fisher relation (BTFR) and the radial acceleration relation...

12 September 2025

Séminaire – Bernardo Cervantes Sodi (UNAM)

"Faint but not forgotten: what simulations reveal about Low Surface Brightness Galaxies" Low Surface Brightness Galaxies (LSBGs) constitute a substantial fraction of galaxies in the local Universe, being primarily bulge-less, late-type galaxies, bluer and more gas-rich than their high surface...

16 September 2025

Soutenance de thèse – Lucie Correia

"Analyzing the millimeter to centimeter emission of nearby galaxies" Compared to the well-studied infrared and radio domains, galaxy emission in the millimeter–centimeter range (300–30 GHz) has been far less explored. This domain is challenging to study due to faint signals, overlapping...

8 September 2025

Soutenance de thèse – Srikanth Nagesh

"Dynamics of galaxies as probes to constrain gravity models" In this thesis, we test cosmological and gravitational models (ΛCDM and MOND) using idealized galaxy simulations. Ultra-diffuse galaxies (UDGs) in the Coma cluster exhibit higher velocity dispersions than MOND predicts. Our MOND...

2 September 2025

Séminaire – Prachi Prajapati (University of Cologne)

"Vz-GAL: Probing Cold Molecular Gas in Dusty Star-forming Galaxies at z=1-6." Reconstructing the physical mechanisms that have shaped present-day galaxies remains a primary goal in observational cosmology. I will introduce the Vz-GAL VLA CO(1–0) Survey, a comprehensive endeavor targeting...

29 August 2025

Séminaire – Michal Bilek (Astronomical Observatory Belgrade)

"Formation of Fornax dwarf spheroidal and the survival of its globular clusters " The presence of globular clusters (GCs) in the Fornax dwarf spheroidal is an important test of the theories aiming to address the missing mass problem. The problem is that in most of them, the GCs are expected to...

27 June 2025

Séminaire – Jean-Baptiste Jolly (MPE)

"NOEMA3D: Inflowing Gas at Subgalactic Scales in Massive Star Forming Galaxies at z~1-2" How is gas transported within galaxies at cosmic noon? What is the role of bars and spiral arms in the build-up of galactic structures? To try to answer these questions I will present NOEMA3D, an ongoing...

13 June 2025

Séminaire – Geraint Lewis (Sydney University)

"Confronting the Cosmological Principle: How secure are the foundations of the cosmos?" I will present our recent work using quasars and radio galaxies to test the cosmological principle—the foundation of modern cosmology. While this principle states the universe is isotropic and homogeneous,...

20 June 2025

Séminaire – Elena Asencio (University of Bonn)

"Do the stellar streams of the Milky Way point to a past Milky Way-Andromeda interaction?"Stellar streams around the Milky Way (MW) can provide valuable insights into its history and substructure formation. Previous studies suggested that several MW streams could have a correlated origin with the...