Laboratoire d’Astrophysique de Marseille

Constraining self-interacting scalar field dark matter with strong gravitational lensing in cluster scale?

We present a method to investigate the properties of solitonic cores in the Thomas-Fermi regime under the self-interacting scalar field dark matter framework. Using semi-analytical techniques, we characterize soliton signatures through their density profiles, gravitational lensin...

Zippers and Twisters: Planes of Satellite Galaxies Emerge from Whirling and Shocking Gas Streams in the Cosmic Web

Abstract We investigate dwarf satellite systems around massive centrals analogs (Milky Way to Centaurus A) in the NewHorizon simulation. Using simple estimators limiting overdetection, we identify planes of satellites comparable to observations in 30%–70% of cases. The full sampl...