Seminar

18 February 2020

The quantum vacuum from the point of view of non linear electrodynamics

Le 26 janvier 2018 De 10h30 à 12h00 Carlo Rizzo Université Toulouse III Paul Sabatier Laboratoire National des Champs Magnétiques Intenses CNRS UPR 3228 I will first give the description of a quantum vacuum in the framework of non linear electrodynamics. I will further...

18 February 2020

The Characterization of Exoplanet Atmospheres: Major Developments underway

Le 19 janvier 2018 De 10h30 à 12h00 Pierre-Olivier Lagage CEA The last twenty years have witnessed an exceptionally fast development in the field of the extra solar planets. The known exoplanets, almost 4000 to date, show how diverse the planets in our galaxy can be. While the...

18 February 2020

Star Formation History of galaxies as probed by their Spectral Energy Distributions

Le 12 janvier 2018 De 10h30 à 12h00 Laure Ciesla CEA   Galaxies follow a bimodality in both color and morphology. They are seperated in star-forming and passive galaxies. Although observational evidences suggest that the mass and the environnement of a galaxy play a key role...

18 February 2020

A short tour through the Lyman-α Universe

Le 22 décembre 2017 De 10h30 à 12h00 Max Gronke UC Santa Barbara   The Lyman-alpha (Lya) of neutral hydrogen is the most prominent emission line in the Universe, and since its it provides a unique window into the high redshift Universe. I will discuss some examples of how...

18 February 2020

The impact of energetic phenomena on evolving galaxies — what can we learn from cosmological simulations?

Le 15 décembre 2017 De 10h30 à 12h00 Michaela Hirschmann IAP   I give a review over the success and limitations of models for stellar and AGN feedback adopted in modern cosmological simulations, highlighting the need for feedback to predict realistic galaxy and black hole...

18 February 2020

Modeling of the Galactic subhalos and phase space for particle dark matter searches

Le 8 décembre 2017 De 10h30 à 12h00 Martin Stref Montpellier   The particle dark matter scenario is currently being probed by direct and indirect searches experiments. Making prediction for these experiments requires a knowledge of the Galactic dark matter phase space...

18 February 2020

Planet 9 in the Solar System? Why is it necessary, and how could we discover it?

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...

18 February 2020

The dynamical matter density in the solar neighbourhood inferred from Gaia DR1

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...

18 February 2020

Getting ready for JWST with new-generation spectral models and interpretation tools

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...

18 February 2020

The Sphinx simulations: the first billion years and cosmic reionisation

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...