Large-Scale Diffuse Intergalactic Magnetic Fields Constraints with the Cherenkov Telescope Array

Understand

Magnetic fields of the order of $\mu$-Gauss are observationally detected in galaxies and galaxy clusters, which can be (at least) in part originated by the amplification of much weaker primordial seed fields.

• These fields should be carried out by strong galactic outflows, magnetically enriching the InterGalactic Medium (IGM).
• However direct observation of magnetic fields in the IGM is scarce.
• This talk will give a review of how Intergalactic Magnetic Field (IGMF) can be constrained using gamma-ray observations.