Département d'Astrophysique

Domaines scientifiques déclarés au RNSR

Mots-clés des publications HAL repérées

Projets ANR

• Formation massive et précoce des galaxies dans la toile cosmique · 2025
• Déchiffrer l'évolution structurelle des galaxies lointaines avec CIGALE-2D · 2025
• Modélisation de l'émission, de l'extinction et des abondances élémentaires dans les galaxies proches, pour comprendre l'évolution de la poussière interstellaire · 2024

Publications HAL récentes repérées

• High Energy Emission from the Galactic Center · 2026

  Résumé de la publication : The center of the Galaxy is a prominent source in X-rays and gamma-rays. The study of its high-energy (HE) emission is crucial in understanding the physical phenomena taking place in this dense and extreme environment, where the closest supermassive black hole (SMBH)…

• A fast powerful X-ray transient from possible tidal disruption of a white dwarf · 2026

  Résumé de la publication : Stars getting close enough to black holes (BHs) can be torn apart by strong tidal forces, producing electromagnetic flares. To date, more than 100 tidal disruption events (TDEs) have been observed, each involving invariably normal gaseous stars whose debris falls onto the…

• Euclid: Constraints on f(R) cosmologies from the spectroscopic and photometric primary probes · 2026

  Résumé de la publication : $\textit{Euclid}$ will provide a powerful compilation of data including spectroscopic redshifts, the angular clustering of galaxies, weak lensing cosmic shear, and the cross-correlation of these last two photometric observables. In this study we extend recently presented $\textit{Euclid}$ forecasts into the Hu-Sawicki $f(R)$…

• Cosmology Likelihood for Observables in Euclid (CLOE). 1. Theoretical recipe · 2026

  Résumé de la publication : As the statistical precision of cosmological measurements increases, the accuracy of the theoretical description of these measurements needs to increase correspondingly in order to infer the underlying cosmology that governs the Universe. To this end, we have created the Cosmology Likelihood for…

• Euclid preparation. Cosmology Likelihood for Observables in Euclid (CLOE). 6: Impact of systematic uncertainties on the cosmological analysis · 2026

  Résumé de la publication : Extracting cosmological information from the Euclid galaxy survey will require modelling numerous systematic effects during the inference process. This implies varying a large number of nuisance parameters, which have to be marginalised over before reporting the constraints on the cosmological parameters. This…