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Probing dark energy with higher order weak lensing statistics Abstract Understanding the accelerated expansion of the Universe is one of the most important challenges of modern cosmology. Thanks to the development of large dedicated surveys (Euclid, Rubin, Roman), weak-lensing cosmic shear...
Numerical CLONES of the local Universe: kesako and why? Abstract As a field without ground truth, cosmology relies on cosmological simulations for data interpretation. This talk will present a peculiar type of cosmological simulations constrained to reproduce our local Universe within about...
Galactic stories told by their stars Abstract Being both a former and new member of the Observatory family, I will start this seminar with a brief introduction about myself, my career path, and how my hobbies put me too often in near-death situations. I will then switch to the connection...
The Zoo of Compact Objects and X-ray Binaries in the Center of the Milky Way Abstract The Galactic Center (GC) harbors the highest concentration and a rich variety of compact objects such as black holes, neutron stars, and white dwarfs in our galaxy. The compact objects and their binary...
Dark Matter Across Galactic Scales and Cosmic-time: current challenges and perspectives Abstract Observations from new generation spectrographs, on Very Large Telescopes, has allowed us to study the resolved velocity profiles, or rotation curves, of galaxies at high redshifts (z=0.6-3.0)....
A cloud-scale view of the star formation process Abstract Star formation is the vital process for stellar mass growth during the evolution of galaxies. Our understanding of where stars form and how their formation is regulated across galactic disks is surprisingly incomplete. In order to...
Dwarf galaxies in deep-wide surveys: a new frontier in the study of galaxy evolution Abstract Dwarf (M∗ < 10^9.5 MSun) galaxies dominate the galaxy number density, making them critical to a complete understanding of galaxy evolution. However, typical dwarfs are not bright enough to...
Physics of neutron stars: numerical simulations and multi-messenger signals Abstract Neutron stars are born in core-collapse supernova events with the collapse of the iron core of massive main-sequence stars, leading to an explosion of the outer layers. This produces a hot proto-neutron...
A small practical tutorial for cosmological N-body simulations Abstract Clément Stahl will give a small tutorial on generating cosmological initial conditions and running a simple N-body simulation of structure formation. This tutorial will first feature a theoretical overview of the field...
Dust and metals in galaxies at Cosmic Noon Abstract At the peak epoch of cosmic star formation activity, z ∼ 2, the obscured star-formation rate (SFR) density of our Universe traced by infrared light is ∼ 4 to 8 times higher than the unobscured SFR density traced by the UV luminosity....