The growth rate of a dipole disturbance in an Einstein-De Sitter universe

Details The growth rate of a dipole disturbance in an Einstein-De Sitter universe The growth rate of a dipole disturbance in an Einstein-De Sitter universe

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...359....1v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 359, Aug. 10, 1990, p. 1-3.

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3

Gravitation Theory, Magnetic Dipoles, Poisson Equation, Relativity, Stellar Evolution, Magnetic Disturbances, Newton Theory, Perturbation Theory

Scientific paper

The growth of a dipole disturbance in an otherwise unperturbed, flat, zero-pressure, FRW universe is examined. The rate of growth is obtained by considering a spherical surface far outside the disturbed region and applying Poisson's equation and the conservation of matter and momentum. It is found that the metric radius of the disturbance grows as t exp 5/6. The mass accreted onto the central dipole grows as the scale factor to the 3/4 power.

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