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Le 4 décembre 2017 De 10h00 à 12h00 Hervé Beust IPAG In a now famous paper, Batygin & Brown (2016) claimed that the orbital configuration of the outermost scattered Kuiper belt objects (KBOs) discovered so far imply the presence of an additional, external ~10 Earth...
Le 24 novembre 2017 De 10h30 à 12h00 Giacomo Monari AIP Potsdam We determine the total dynamical density in the solar neighbourhood using the Tycho-Gaia Astrometric Solution (TGAS) catalogue. Astrometric measurements of proper motion and parallax of stars inform us of both the...
Le 17 novembre 2017 De 10h30 à 12h00 Jacopo Chevallard ESA The James Webb Space Telescope (JWST), scheduled for launch in October 2018, will open a largely unexplored observational window at near- to mid-infrared wavelengths (0.6-28 micron). In particular, the Near-InfraRed...
Le 10 novembre 2017 De 10h30 à 12h00 Joakim Rosdahl CRALThe epoch of reionisation marks a major shift from a cold neutral Universe to a warm ionised one, a transition which was thought to be powered by UV radiation emitted from young massive stars in the first galaxies.Our...
Le 3 novembre 2017 De 10h30 à 12h00 Chervin Laporte MPA/Victoria I will present self-consistent N-body models of the interaction between Sgr and the Milky Way and show how these relate to various observations of the Galactic Anticenter. In particular, I will show that the...
Le 20 octobre 2017 De 10h30 à 12h00 Hans-Walter Rix MPIA Heidelberg SDSS V will be an unprecedented all-sky, multi-epoch spectroscopic survey of over six million objects. It is designed to decode the history of the Milky Way galaxy, trace the emergence of the chemical...
Le 13 octobre 2017 De 10h30 à 12h00 Daniel Cordier Université de Reims Les planètes du système solaire ont presque toutes un cortège satellitaire. Parmi tous ces satellites, Titan, le plus massif de Saturne, est le seul possédant une atmosphère dite « dense », cette...
Le 6 octobre 2017 De 10h30 à 12h00 Giulia Migliori CEA Relativistic jets are associated with black hole (BH) activity spanning several orders of magnitudes in the BH mass scale, from galactic X-ray binaries to active galactic nuclei (AGNs). Their emission is a tracer of...
Le 29 septembre 2017 De 10h30 à 12h00 Maurizio OTTAVIANI Institut des Recherches sur la Fusion Magnétique, CEA Cadarache This seminar gives an overview of various aspects of plasma theory in the context of magnetic fusion research. After a general introduction on magnetic...
Le 22 septembre 2017 De 10h30 à 12h00 Oliver Müller University of Basel Dwarf galaxies are tracers of the fine-structure of the large-scale structure of the universe, but their predicted distribution from simulations is in serious conflict with observations in the Local...