Testing the presence of a fifth force at the Galactic Center, Arianna Foschi
12 décembre 2024
The presence of stars orbiting at the Galactic Center, all placed within an arcsecond distance from the supermassive black hole Sagittarius A*, (…)
Black Holes beyond General Relativity : Uniqueness & Dynamics, Aaron Held
14 novembre 2024
Recent astrophysical observations of electromagnetic and gravitational emission from close to black-hole horizons offer novel tests of General (…)
Black Hole Jet Launching in Polarized Light, Andrew Chael
14 novembre 2024
Extragalactic jets throughout the universe transport energy from small scales near a galaxy’s central supermassive black hole to extragalactic (…)
Contrasting neutron star heating mechanisms with Hubble Space Telescope observations, L.E. Rodriguez
7 novembre 2024
Passively cooling neutron stars would reach very low surface temperatures $T_s < 10^4$ K within $<10^7$ yr. However, likely thermal UV (…)
Marie-Noelle Celerier, une généralisation inhomogène du modèle cosmologique standard : la solution exacte de la RG dite Szekeres
17 octobre 2024
La solution homogène et isotrope des équations d’Einstein dite LambdaCDM, assortie de ses perturbations linéaires et d’ordres supérieurs, forme le (…)
Exploring collapsar scenarios in numerical relativity, Masaru Shibata
10 octobre 2024
By performing longterm magneto/viscous radiation hydrodynamics simulations in general relativity for the collapse of rapidly rotating massive (…)