A possible observational test of the global inhomogeneity.

Details A possible observational test of the global inhomogeneity. A possible observational test of the global inhomogeneity.

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...319..371m&link_type=abstract

Astronomy and Astrophysics, v.319, p.371-374

Astronomy and Astrophysics

Astrophysics

3

Cosmic Microwave Background, Large-Scale Structure Of The Universe

Scientific paper

Lauer and Postman (1994ApJ...425..418L) announced that the direction of the peculiar motion of Local Group with respect to the Abell clusters is not identical to the maximum of dipole anisotropy of cosmic microwave background radiation. This fact may be explained either standardly by a bulk stream of these clusters or by a global inhomogeneity of the temperature of microwave background across the whole Hubble radius. The second explanation is in principle allowed, e.g., in inflationary scenarios. It is shown that the careful measurement of the quadrupole anisotropy of cosmic microwave background may be used as an observational test between these two alternatives. Predictions of the expected values of the quadrupole components of sizes =~(1-15)μK are presented. Unfortunately, the COBE data are still ambiguous to do any detailed comparison of these theoretical predictions with the observational data.

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