January 2, 2013

Magnetic forces without magnets - magnetic fields created before the first stars




Bochum physicist calculates field strengths in the early universe

Physical Review Letters: magnetic fields created before the first stars

Magnets have practically become everyday objects. Earlier on, however, the universe consisted only of nonmagnetic elements and particles. Just how the magnetic forces came into existence has been researched by Prof. Dr. Reinhard Schlickeiser at the Institute of Theoretical Physics of the Ruhr-Universität Bochum. In the journal Physical Review Letters, he describes a new mechanism for the magnetisation of the universe even before the emergence of the first stars.

No permanent magnets in the early universe

Before the formation of the first stars, the luminous matter consisted only of a fully ionised gas of protons, electrons, helium nuclei and lithium nuclei which were produced during the Big Bang. “All higher metals, for example, magnetic iron could, according to today’s conception, only be formed in the inside of stars”, says Reinhard Schlickeiser