The lab regularly hosts colloquia and workshops that focus on particular subjects
which are chosen amongst the different fields and projects of the lab.
These meetings last several days and are intended for professionals only.
Quasars and AGN’s (~500 000) are with stars (~1 billion), the most fascinating targets up to
be collected by the Gaia satellite which constitutes a fully funded ESA 'Cornerstone' mission.
The Gaia mission, typically built for quasi-punctual sources, will detect over the whole sky
and with an exceptional accuracy quasars as well as bright and compact AGNs on the deepest z-coverage.
The science with quasars brings fundamental bases to build reference systems as well as to link
supermassive black holes and star formation histories at the earliest epochs. The GAGNES meeting concerns a large
community of scientific researchers and engineers involved and/or interested by Gaia data (analysis, mining, physics).
On the other hand, the GAGNES meeting will gather the widest community on various topics for the science exploitation and complementary programs.
Einstein's theory of relativity has been successful in explaining and predicting many gravitational phenomena.
Experimentally, however, we do not know how gravity behaves at distances shorter than about 0.01 mm.
For example there may be hidden dimensions at short distances. In fact, many theories, including superstring theories
and M-theory, require the existence of such extra dimensions. Gravity at very long distances, e.g. billions of light-years,
may also be as weird as at short distances. Precision observational data revealed that the expansion of our universe
is accelerating. If Einstein's theory is correct, this requires that more than 70 percent of our universe is filled
with invisible, negative pressure, energy. This energy is named dark energy, but we do not know what it really is.
We thus wonder if we can change Einstein's theory at long distances to address the mystery of dark energy.
These considerations let us believe that gravity is the key to tackle the mysteries in modern cosmology such as
dark energy, dark matter, inflation and big-bang singularity. Toward this ambitious goal, in this mini-workshop we get
together and explore various aspects of gravity and cosmology.
The goal of this conference is to bring together theorists, observers, and simulators to discuss the latest
developments in cosmology. We expect some emphasis on topics related to "first light" (such as 21-cm cosmology, high redshift
galaxies, the first stars, and cosmic reionization), along with a broad variety of other hot topics in cosmology.
"Galaxies in Absorption" is the 6th in a series of workshops intented to explore all
aspects of galaxies probed in absorption using bright background sources such as quasars or Gamma-ray
Previous meetings of people working in this area were organised in Chicago (2009), Marseille (2010),
Boulder (2011), Pune (2012) and Marseille (2013).
Monday 17 November 2014 - Wednesday 19 November 2014
A conference in memory of Jean Heyvaerts will be held from Nov. 17 to 19, 2014 at the
Institut d'Astrophysique de Paris, France. The conference aims at giving an overview of the diverse
fields to which he contributed with deep and novel ideas. Discussed topics will include magnetic
structures from stellar to cosmological scales, reconnection, jets and accretion, relativistic
plasmas and turbulence, and cosmic-ray acceleration.
Tuesday 02 December 2014
«Which astrophysical site for the r process ? The role of neutron star mergers.»
9h - 18h, Salle des séminaires. L'entrée est libre.
Les personnes qui souhaitent proposer une contribution orale (environ 15 minutes) sont priées de contacter :
E. Vangioni et F. Daigne.
Les interventions seront acceptées dans la limite des créneaux disponibles.
Provisional Program :
Invited talks :
Andreas Bauswein (MPA Garching) : Mergers and Gravitational Waves
Frédéric Daigne (IAP - UPMC) : Cosmic evolution of Europium, SNII vs NS mergers
Andy Gallagher (Observatoire de Paris-Meudon, GEPI) : Observational constraints on r process elements
Stéphane Goriely (Université Libre de Bruxelles) : r process nucleosynthesis
The series of "European Workshops on Collisionless Shocks" has been initiated at the Centre de Recherches en Physique de l'Environnement (named later Centre d'études des Environnements Terrestre et Planetaires - CETP), Issy les Moulineaux, in France, March 1991. Collisionless shocks are met and/or invoked in a large variety of domains in Plasma Physics
Cet atelier, financé par le Programme National Hautes Energies (PNHE), se propose de discuter différents aspects de ce domaine de recherche très vivant. Il rassemble à cet effet théoriciens des hautes énergies, modélisateurs, physiciens des plasmas, physiciens de l'interaction laser-plasma et experts en simulations numériques (MHD, PIC) pour confronter leurs points de vue, donner lieu à de nouvelles collaborations et développer de nouveaux outils d'analyse.
Monday 10 September 2012 - Friday 14 September 2012
«Euclid Seminar : school for Engineers»
ESA and the Euclid Consortium are organising a set of lectures for engineers and scientists working on the Euclid mission. The aim of the "Euclid Seminar" is to strengthen the links between the EC and ESA teams set for the implementation phase, and to help bring everyone up to a common level of understanding with respect to the Euclid science, instruments and mission. The Euclid Seminar will take place at IAP, from September 10 to 14, and will be organised in pedagogical lectures given by ESA and Euclid Consortium scientists presenting the science (cosmology and legacy), specific technical aspects (measurement techniques,survey), the payload (telescope, VIS and NISP instruments) and the science ground segment.
Monday 27 February 2012 - Wednesday 29 February 2012
In 1982, seminal work showed the puzzling behaviour of Lithium7 in low-metallicity, halo stars of our
Galaxy. Those observations did in fact establish the paradigm of a Lithium7 abundance constant in stars spanning three orders
of magnitude in metallicity. Since then, this finding has challenged our understanding of Stellar Atmospheres, Cosmological
Nucleosynthesis and Stellar Formation environments, becoming known as the "Lithium Problem".
Depuis deux ans, sous l'impulsion d'une bourse Egide entre la France et la Corée du Sud, nous tentons de développer des collaborations étroites
et privilégiées entre le département d'Astrophysique GEM (Galaxy Evolution Meeting) de l'Université de Yonsei (Séoul - Corée du
Sud) dirigé par le Prof. Sukyoung Yi, et le CRAL (Centre de Recherche d’Astrophysique de Lyon)
et l'IAP pour la partie Française. Au cours des deux dernières années, plusieurs ateliers dans
lesquels ont participé des chercheurs et étudiants des deux parties ont déjà eu lieu soit en
Corée du Sud soit en France.
The workshop has the ambition to gather together cosmologist and relativists active in the field of cosmological backreaction. The main goal is to give them the chance to present and to discuss their latest results in an informal setting and to have open discussions in order to discuss the status of this question and identify the problems to be overcome in the coming years.