The possibility of the detection of microwave background radiation temperature fluctuations caused by Great-Attractor-scale disturbances

Details The possibility of the detection of microwave background radiation temperature fluctuations caused by Great-Attractor-scale disturbances The possibility of the detection of microwave background radiation temperature fluctuations caused by Great-Attractor-scale disturbances

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sval...18..225g&link_type=abstract

Soviet Astronomy Letters, Vol. 18, p. 225; Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 18, no. 7, July 1992, p. 563

Mathematics

Probability

2

Probability Density Functions, Relic Radiation, Strange Attractors, Temperature Distribution, Astronomical Models, Chaos

Scientific paper

The microwave background radiation temperature fluctuations caused by the disturbance precursor of the Great Attractor are calculated. If the last-scattering surface intersects the Great Attractor no farther than 28/h Mpc beyond the center and closer than 14/h Mpc to it, the expected fluctuations exceed the level of 6.6 x 10 exp -5 or 3 sigmaT in the angular scale of about 30 arcmin, reaching a maximum value of 12 x 10 exp -5 (without additional smoothing). In the case of a Gaussian field of the initial fluctuations, the standard model with cold dark matter does not contain these fluctuations on the last-scattering surface, while the model with additional power on large scales predicts 64 hot spots on the whole sky or one spot on an area of 25 x 25 deg. Analogous negative fluctuations will yield the same number of cold spots.

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