Primordial gravitational waves and the blackbody radiation anisotropy

Details Primordial gravitational waves and the blackbody radiation anisotropy Primordial gravitational waves and the blackbody radiation anisotropy

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...280l..39a&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 280, May 15, 1984, p. L39-L41. NASA-supported resea

Astronomy and Astrophysics

Astrophysics

4

Cosmology, Gravitational Waves, Relic Radiation, Anisotropy, Dipoles, Quadrupoles

Scientific paper

If relict gravitational waves deriving from a chaotic initial singularity contain a nonisotropic component, then this radiation can produce a frame dragging; effect which will induce a dipole anisotropy in the observed temperature distribution of the 3 K electromagnetic radiation background. The measured dipole and quadrupole distributions of the electromagnetic background can thus be used to bound the effective wave parameters of the nonisotropic part of the gravitational background. Using available data, the dimensionless amplitude of this nonisotropic part is found to be less than 0.0005 for wavelengths less than the Hubble radius. The effective energy density of this nonisotropic component of the gravitational radiation background is less than 2 x 10 to the -8th times the critical density.

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