Recent work has suggested that, during reionisation, spatial variations in the ionising radiation field should produce enhanced Ly$\alpha$ forest transmission at distances of tens of comoving Mpc from high-redshift galaxies. I will present results from our study -- which includes the largest simulation box ($L \sim 240$ cMpc) used to...
Over the last two decades, wide-field resolved star studies have shown a remarkable variety of stellar (sub-)structures in the halos of the Milky Way and M31, attesting to the fact that accretions have played an essential role in shaping their evolution. Pushing these studies to galaxy systems beyond the Local...
Satellite abundance in Milky Way-like halos plays a crucial role in distinguishing dark matter models, in particular, in dark matter models where a suppression of substructure is expected below a mass scale. One model that has gained recent interest is the Quantum/Fuzzy or Wave Dark Matter model, where the dark...
The Lyman-alpha emission line offers a powerful window into galaxies and their diffuse environments at high redshift. Observations from high-sensitivity instruments mounted on telescopes such as Subaru, HET, and JWST encode the distribution of hydrogen and the processes shaping its evolution. However, interpreting these data remains challenging due to the...
Recent work has suggested that, during reionisation, spatial variations in the ionising radiation field should produce enhanced Ly$\alpha$ forest transmission at distances of tens of comoving Mpc from high-redshift galaxies. I will present results from our study -- which includes the largest simulation box ($L \sim 240$ cMpc) used to...
October 2025 13 : 30 Lyman Alpha Forest and cosmological simulations
Over the last two decades, wide-field resolved star studies have shown a remarkable variety of stellar (sub-)structures in the halos of the Milky Way and M31, attesting to the fact that accretions have played an essential role in shaping their evolution. Pushing these studies to galaxy systems beyond the Local...
September 2025 13 : 30 Galactic Archeology, stellar populations, and Subaru
Satellite abundance in Milky Way-like halos plays a crucial role in distinguishing dark matter models, in particular, in dark matter models where a suppression of substructure is expected below a mass scale. One model that has gained recent interest is the Quantum/Fuzzy or Wave Dark Matter model, where the dark...
June 2025 13 : 30 dark matter, dwarf galaxies, and Milky Way
The Lyman-alpha emission line offers a powerful window into galaxies and their diffuse environments at high redshift. Observations from high-sensitivity instruments mounted on telescopes such as Subaru, HET, and JWST encode the distribution of hydrogen and the processes shaping its evolution. However, interpreting these data remains challenging due to the...
June 2025 13 : 30 large scale structure, numerical simulations, and galaxy evolution
和 英