Speaker
Description
TeV halos have become a new class of astrophysical objects which were not predicted before their recent observation. They offer evidence that diffusion around sources (concretely, pulsars) is not compatible with the effective average diffusion that our models predict for the Galaxy. This directly impacts Galaxy formation, our knowledge of the propagation process throughout the Galaxy and our models of acceleration of charged particles by astrophysical sources like supernova remnants (SNRs) or Pulsar Wind Nebulae (PWN).
The goal of this talk is to overview what is this new class of object and the different theories able to explain the mechanisms leading to its formation and evolution. Finally, we will show the importance of the detection of these sources for our current understanding on galaxy evolution.
