The advent of large-scale Particle-In-Cell simulations makes it possible to study the turbulent energy cascade from first physical principles. I will show that particles are energised in large-scale current sheets where the magnetic field reconnects. Particles have a strong pitch angle anisotropy, i.e. their velocity is nearly aligned with the magnetic field. I will show that the anisotropy hardens the spectrum of the synchrotron radiation, and suppresses the synchrotron luminosity with respect to the inverse Compton luminosity. I will discuss the implications for the modelling of non-thermal radiation from astrophysical sources.
Zoom link: https://icts-res-in.zoom.us/j/85733690318?pwd=L0V0TnNWM2o5SUs2KzRCTEg4YlpqUT09
Meeting ID: 857 3369 0318