Magnetised winds in dwarf galaxies

Understand

The origin and the magnitude of the inter-galactic magnetic field is of primordial importance in the global picture of magnetic field evolution, as it is considered to be the missing link between galactic magnetic fields and cluster magnetic fields on much larger scales.

• We are testing whether dwarf galaxies are good candidates to explain the enrichment of the IGM: after their discs form and trigger galactic dynamos, supernova feedback will launch strong winds, expelling magnetic field lines in the IGM.
• We have performed MHD simulations of an isolated dwarf galaxy, forming self-consistently inside a cooling halo.
• Using the RAMSES code, we have for the first time simulated the formation of a magnetised supernova-driven galactic outflow.