Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...74..665s&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 74, Nov. 1990, p. 665-674.
Astronomy and Astrophysics
Astronomy
18
Cosmology, Microwave Emission, Red Shift, Relic Radiation, Density Distribution, Infrared Astronomy Satellite, Mach Number, Universe
Scientific paper
Microwave background anisotropies in various cosmological scenarios are studied. In particular, the extent to which nonscale-invariant spectra of the primordial density fluctuations are consistent with the observational upper limits is examined. The resultant constraints are summarized as contours on (n, Omega)-plane, where n is the power-law index of the primordial spectrum of density fuctuations and Omega is the cosmological density parameter. They are compared also with the constraints from the cosmic Mach number test, recently proposed by Ostriker and Suto (1990). The parameter regions which pass both tests are not consistent with the theoretical prejudice inspired by the inflationary model.
Gouda Naoteru
Sugiyama Naoshi
Suto Yasushi
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