Magnetic Fields in the Early Universe
| dc.creator | Enqvist, Kari | |
| dc.date | 1997-07-28 | |
| dc.date.accessioned | 2026-07-07T02:23:54Z | |
| dc.date.available | 2026-07-07T02:23:54Z | |
| dc.description | The observed galactic magnetic fields may have a primordial origin. I briefly review the observations, their interpretation in terms of the dynamo theory, and the current limits on cosmological magnetic fields. Several possible mechanisms for generating a primordial magnetic field are then discussed. Turbulence and the evolution of the microscopic fields to macroscopic fields is described in terms of a shell model, which provides an approximation to the full magnetohydrodynamics and indicates the existence of an inverse cascade of magnetic energy. Cosmological seed fields roughly of the order of $10^{-20}$ G at the scale of protogalaxy, as required by the dynamo explanation of galactic magnetic fields, seem rather plausible. | |
| dc.description | 19 pages LaTeX, 5 ps-figures, uses sprocl.sty; Invited Talk at the Strong and Electroweak Matter '97, Hungary | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9707300 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9707300 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/11426 | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Magnetic Fields in the Early Universe | |
| dc.type | text |