Magnetic fields are ubiquitous in galaxies, around galaxies and possibly in the intergalactic medium (IGM). Explaining their origin is a challenging task based on complex magnetohydrodynamic (MHD) numerical simulations.
I will report on our recent work modeling the creation of seed fields through the Biermann battery process, the amplification of these seed fields through the turbulent dynamo process and finally the dispersion of these equipartition fields in the IGM through galactic outflows.
I will discuss the pros and the cons of this scenario in light of current observations.
This Friday colloquium will be hybrid. Attendees can therefore participate either in-person or via Zoom. Please join via Zoom at
https://uio.zoom.us/j/69001043754?pwd=cEJpbVE5ci9PdWNtRld2TDNNcGtKdz09
Meeting ID: 690 0104 3754
Passcode: PeiseStua3
Attendees will be muted during the colloquium, but will have the opportunity to ask questions at the end by clicking on the "raise hand” button (or send a request via chat).