Magnetohydrodynamic effects of a first-order cosmological phase transition

Details Magnetohydrodynamic effects of a first-order cosmological phase transition Magnetohydrodynamic effects of a first-order cosmological phase transition

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phrvl..51.1488h&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 51, Oct. 17, 1983, p. 1488-1491.

Physics

124

Cosmology, Dynamo Theory, Interstellar Magnetic Fields, Magnetohydrodynamics, Matter (Physics), Phase Transformations, Gravitational Collapse, Interstellar Gas, Jeans Theory, Quasars, Stellar Evolution

Scientific paper

The spectrum, amplitude, and evolution of a tangled primeval magnetic field generated by macroscopic dynamo activity arising during a first-order phase transition in the early universe are analyzed. The effects of the field on the matter distribution at late times could be much larger than that of the adiabatic or isothermal density fluctuations generated by the transition. With optimistic assumptions, magnetic fields generated during a transition at T = about 0.2 GeV could lead to the collapse of gas clouds of about 10-100,000 solar mass after recombination, and to the formation of pregalactic stars or quasars.

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