On the origins of galaxies, galactic angular momenta, and galactic magnetic fields

Details On the origins of galaxies, galactic angular momenta, and galactic magnetic fields On the origins of galaxies, galactic angular momenta, and galactic magnetic fields

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...224..337w&link_type=abstract

Astrophysical Journal, Part 1, vol. 224, Sept. 1, 1978, p. 337-343. Research supported by Harvard University and Smithsonian Re

Astronomy and Astrophysics

Astrophysics

113

Angular Momentum, Astronomical Models, Galactic Evolution, Galactic Rotation, Magnetic Fields, Cosmic Plasma, Galactic Mass, Gravitational Fields, Magnetohydrodynamics, Plasma Turbulence, Reynolds Number

Scientific paper

It is shown that if one assumes the existence of a disordered cosmic magnetic field at recombination, then, provided the field varies on a comoving scale corresponding to a typical galactic mass, one can account for the existence of galaxies, galactic angular momenta, and galactic magnetic fields. The theory predicts the existence of a present-day intergalactic magnetic field of no more than about 1 billionth of a gauss varying on a characteristic length scale of the order of 1 Mpc.

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