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 […]
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 […]
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 […]
le 9 octobre 2020, 11h à 13h, Natalie WEBB, salle de Conférence Thanks to large surveys such as Gaia, the Sloan Digital Sky Survey (SDSS), GALEX, 2MASS, NVSS, FIRST, XMM-Newton and Chandra, we have catalogued many different stars and galaxies. We have also found some very exotic objects, especially when we observe at high energies, […]
le 18 septembre 2020, 11h à 13h, Katia FERRIERE, salle Coriolis Magnetic fields are ubiquitous in the Universe. Most celestial bodies, from planets to stars to galaxies, appear to be magnetized. Even intergalactic space could be threaded by a magnetic field. Cosmic magnetic fields generally play an important role. They affect the structure of stars […]
le 11 sep 2020 de 11h00 à 13h00, Florian DEBRAS, salle Pyrénées Depuis le printemps 2016, le satellite Juno orbite autour de Jupiter et mesure avec une incroyable précision des observables telles que le champ magnétique, les émissions radios ou le champ de gravité de la planète. Le champ gravitationnel est particulièrement intéressant car il […]
le 13 déc 2019 de 11h00 à 13h00 L’astrophysique des hautes énergies est centrée sur l’étude des astres les plus extrêmes observables dans l’Univers, et en tout premier lieu les trous noirs, mais aussi les amas de galaxies, les supernovae… Athena, le prochain grand observatoire de l’agence spatiale européenne permettra d’étudier l’Univers en rayons X, […]
le 29 nov 2019 de 11h00 à 13h00
Le 22 nov 2019 de 11h00 à 13h00 Neutron stars are the extremely dense compact remnants of supernova explosions. Their properties makes them wonderful objects to study the behaviour and composition of matter in regimes not accessible by Earth laboratories (densities beyond the nuclear densities, ~2×1014 g/ cm3). Determining the dense matter equation of state, […]