Dynamos versus magnetogenesis: astrophysics versus cosmology (Pencil Code school and user meeting workshop)

by Axel Brandenburg (Nordita)

Wednesday Oct 22, 2025, 2:00 PM → 3:30 PM Europe/Zurich

4/3-006 - TH Conference Room (CERN)

Magnetic fields occur spontaneously both in astrophysics and in the early universe. Their energy sources are rather different: kinetic energy of the plasma in astrophysics and a variety of other forms of energy including axions, scalar fields, and chiral fermions in the cosmological settings. However, both areas have in common that the magnetic field is amplified by a long wavelength instability. In this colloquium, I will survey astrophysical and cosmological magnetic fields and then present a selection of important recent findings.

This talk is also part of the Pencil Code school and user meeting workshop (https://indico.cern.ch/event/1548935)

Recording