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  • From 25 to 30 November

    PHYSICS and ASTROPHYSICS of COSMIC RAYS

    Observatoire de Haute Provence
    Saint Michel l’Observatoire, France
    view website Cosmic rays (CR) have a central position in many major astrophysical issues, from the solar system to galaxy clusters. They stand for a testimony on the conditions in the most extreme objects in the Universe and plays a key role in the physics and chemistry of the interstellar medium (ISM), with consequences ranging from star formation and galactic magnetic fields to the production of light elements. Moreover, the CR could carry information on Dark Matter. The results of observations, accumulated during the past decade, have considerably transformed our knowledge of the CR (...)

  • Thursday 12 December

    10h00 – 12h00

    Soutenance de These de Lorenzo Valvo: Hamiltonian Perturbation Theory on a Poisson Algebra. Application to a Throbbing Top and to Magnetically Confined Particles

    Lorenzo Valvo

    Amphi 5
    CPT Marseille Luminy
    The Hamiltonian formulation of classical mechanics reveals an underlying Lie algebraic structure which is a key element for developing an efficient perturbation theory. But Lie structures are met in a wider class of dynamical systems, called Poisson systems; some examples are, among others, fluid dynamics, electrodynamics, kinetic theory. In the first part of this thesis, we propose a purely algebraic approach to classical perturbation theory to extend its scope to any Poisson system. In this method, introduced in [Vittot, 2004], a (Lie) transform allows to split the (...)

  • From 3 to 9 May 2020

    Hot topics in Modern Cosmology: Spontaneous Workshop XIV

    IESC Cargese, France
    Cargese, France
    view website Spontaneous Workshop (SW) brings together specialists in particle physics, astrophysics and theoretical physics at the Institute of Scientific Studies of Cargèse (IESC) to exchange recent knowledge on Cosmology. The goal is to stimulate debate for generating innovative ideas on emerging issues. With this in mind, the number of participants is limited to 30-40 and the workshop program is based on an optimal number of concise presentations, with a sufficient discussion space to facilitate interactions between participants. Postdoctoral and PhD students are encouraged to (...)

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