Les moyens sol de l’astronomie française
le 3 septembre 2021, 11h à 13h, Geneviève Soucail, salle Lyot, OMP
Séminaire
Observing clusters of galaxies in the X-ray domain
le 11 décembre 2020, 11h à 13h, Nicolas Clerc, salle Coriolis Observations of galaxy clusters at X-ray wavelengths offer a unique window to understanding the physical processes governing the assembly of large-scale structure in our Universe. X-rays signpost the hot and tenuous gas that permeates the entire volume of galaxy clusters; in fact, these extremely […]
Superrotation équatoriale des Jupiter chauds
le 27 novembre 2020, 11h à 13h, Florian Debras, salle Coriolis La découverte de la première exoplanète, 51 Peg b, a été un choc pour la communauté qui ne s’attendait pas à trouver une planète semblable à Jupiter 50 fois plus proche de son étoile que Mercure n’est du Soleil ! Depuis, quelques centaines de […]
ULXs and accretion processes
le 20 novembre 2020, 11h à 13h, Andrés Gurpide Lasheras, salle Coriolis Accretion around black holes and neutron stars is an efficient process to convert gravitational energy into radiation. So efficient, that accreting black holes and neutron stars power the brightest sources in the X-ray sky. As matter falls onto these objects and energy is […]
Astrophysical Plasma
le 13 novembre 2020, 11h à 13h, François Rincon, salle Coriolis
Chasing dark energy
le 23 octobre 2020, 11h à 13h, Alain BLANCHARD, salle Coriolis Since a little more than twenty years the accelerated nature of the expansion of the universe has been evidenced and is now regarded as an established fact. The origin, the source of this accelerated expansion is a vastly unknown! It means that « something » dubbed […]
A Universe of waves
le 16 octobre 2020, 11h à 13h, Arturo LOPEZ ARISTE, salle de conférence The phase of a wave can only be defined unambiguously for complex waves. This strange quantity appears at the core of all physics: from the quantification of atomic levels or of the electric charge to the source of the electromagnetic interaction or […]
A dusty Universe
le 25 septembre 2020, 11h à 13h, Jean-Philippe BERNARD, salle de conférence Being part of the ISM cycle, dust is present in all phases of the ISM and on all scales from the planetary systems to cosmological scales. Its presence is known since the early days of modern astronomy, and yet, its exact nature and […]
Transiting exoplanets
le 2 octobre 2020, 11h à 13h, Claire MOUTOU, salle Lyot Since ground-based surveys and the first space mission CoRoT dedicated to the search for transiting extrasolar systems, this field of observational studies has been tremendously improving with the Kepler mission, and is still extremely active with the current TESS mission, and the preparation of […]