Astrophysical Plasma
le 13 novembre 2020, 11h à 13h, François Rincon, salle Coriolis
Séminaire
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 […]
Searching for new and rare objects in the Universe
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, […]
Cosmic magnetic fields
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 […]
Nouveaux modèles de Jupiter grâce au satellite Juno
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 […]
L’Observatoire spatial Européen en rayons X: Athena et son spectromètre de précision, le X-ray Integral Field Unit, Didier Barret
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, […]