Integral constraints on perturbations of Robertson-Walker cosmologies

Details Integral constraints on perturbations of Robertson-Walker cosmologies Integral constraints on perturbations of Robertson-Walker cosmologies

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...346..601e&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 346, Nov. 15, 1989, p. 601-606.

Statistics

Computation

17

Computational Astrophysics, Perturbation Theory, Relic Radiation, Astronomical Models, Integral Equations

Scientific paper

Integral constraints occur in the case of spherically symmetric inhomogeneities in Robertson-Walker universes, and (according to Traschen) in the case of general perturbations of these models. It is shown that these constraints are the same in the case of spherical symmetry, and they are interpreted as 'fitting conditions', that is, as constraints on the background Robertson-Walker model rather than on the nature of inhomogeneities. These integral constraints significantly affect the interpretation of anisotropies in the cosmic microwave background radiation.

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