Soutenance de thèse de Trung Tin DINH (Salle Coriolis) Résumé de la thèse :L’imagerie hyperspectrale enregistre simultanément l’information spatiale et spectrale d’une scène, chaque pixel étant décrit par un spectre de quelques dizaines à quelques centaines de bandes. Cette richesse spectrale ouvre la voie à de nombreuses applications, dont certaines reposent sur la classification spectrale pour différencier et identifier […]
Soutenance de thèse de Paul Charpentier (Salle Coriolis) Résumé de la thèse : Depuis la découverte des premières exoplanètes à l'aide de la méthode de la vitesse radiale (RV) il y a 30 ans, les techniques de détection ont été continuellement perfectionnées. À l'heure actuelle, les spectromètres optiques les plus récents offrent une précision 10 […]
Federica Bradascio (IJCLab) For more than a decade, multi-messenger astrophysics has opened new windows onto the most energetic phenomena in the Universe. This field combines complementary messengers such as electromagnetic radiation ranging from radio waves to gamma rays, neutrinos, and gravitational waves, in order to probe the physical processes powering cosmic accelerators. In this presentation, […]
Salle de Conférence - IRAP Roche
9 avenue du Colonel Roche, Toulouse, FR
Ian Hothi (OBSPM, LPENS) The Epoch of Reionization corresponds to the times during which the first stars and galaxies formed in the Universe. In radio astronomy, the so-called "21cm line" is the most direct probe of this epoch, offering a true 3D view of how the intergalactic medium is heated and ionised. Current telescopes (LOFAR, […]
Salle de Conférence - IRAP Roche
9 avenue du Colonel Roche, Toulouse, FR
Aurélie Astoul (IRAP) Tidal interactions are a key driver of the orbital and rotational evolution of close stellar and (exo-)planetary systems. In stars and gaseous planets, the tidal response can manifest as tidal waves, whose energy is expected to be significantly dissipated and allows for an efficient redistribution of angular momentum within the system. In […]
Salle de Conférence - IRAP Roche
9 avenue du Colonel Roche, Toulouse, FR
Alexis Rouillard (IRAP, Leibniz IAP) On Christmas Eve 2024, after seven Venus flybys to adjust its orbits closer to the Sun, the Parker Solar Probe reached its closest approach to the solar surface, at a distance of just under nine solar radii. The first seven years of this incredible mission have provided in situ measurements […]
Katarina Kraljic (ObAS) The strikingly anisotropic large-scale distribution of matter, the so-called cosmic web, is made of an extended network of voids delimited by sheets, themselves segmented by high-density filaments, within which matter flows towards compact nodes where they intersect. Do the properties of galaxies, such as their mass, star formation rate or morphology, retain […]
Salle de Conférence - IRAP Roche
9 avenue du Colonel Roche, Toulouse, FR
Jean-Charles Cuillandre (CEA AIM, OSU Paris Saclay) ESA's Euclid journey from raw data to global awe began with its Early Release Observations (ERO) program, marking a series of pivotal media moments that showcased the mission's capabilities and long-term vision. In November 2023, the first release unveiled breathtaking color images from Euclid’s twin panoramic cameras, signaling […]
Pierre Barbault (IRAP) What do the radial velocity of a star, a spectral mixture and the electromagnetic field produced by the brain have in common? In all three cases, one might describe the data as a linear combination of a small number of elementary signals, sometimes called ‘atoms’ (sinusoids, spectra, peaks, dipoles, etc.). Introduced in the […]
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