Résumé / Abstract Journal-club_Doctorants

Journal-club Doctorants / Journal-club PhD students

« PIC simulation of relativistic collisionless shocks »

Arno Vanthieghem
Institut d'Astrophysique de Paris (Paris, France)

Among other powerful relativistic astrophysical objects, gamma-ray bursts, blazars, pulsar winds provide an ideal environment to understand the acceleration mechanisms of high energy charged particles. The high-energy electromagnetic spectra of these sources generically follow a power law distribution attributed to synchrotron and inverse Compton radiations of non-thermal particles. These non-thermal spectra can naturally be linked to the presence of relativistic outflows through a conversion of kinetic or Poynting flux in a non-thermal particle energy distribution in relativistic shocks through the development of microscopic plasma instabilities. A deep insight into these phenomena requires an understanding of the micro-physics of collisionless shocks. This can be done via Particle In Cell (PIC) simulations, which provide ab initio numerical experiments of the acceleration mechanism properties and their efficiency.
mercredi 21 juin 2017 - 17:00
Salle Entresol Daniel Chalonge, Institut d'Astrophysique
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