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Determination of cosmological parameters by the data on anisotropy of cosmic microwave background

Authors :
S. Ye. Apunevych
Source :
Вісник Астрономічної школи, Vol 1, Iss 2, Pp 42-46 (2000)
Publication Year :
2000
Publisher :
National Aviation University, 2000.

Abstract

This paper is devoted to the analysis of correspondence between predictions of inflationary cosmological model with mixed dark matter, arbitrary space curvature and data of modern experiments for measurements of cosmic microwave background anisotropy (CMB). Inflationary scenario for large-scale structure formation predicts power spectrum of CMB angular fluctuations in the form of sequence of power amplifications (acoustic peaks).Therefore statistically robust identification of such peculiarity in the observed spectrum on the scale about one degree confirms the inflationary theory and gives a possibility to put constraints on the cosmological parameters. Using the observational data on CMB anisotropy, the position lp and the amplitude of such peak Ap were determined. From these results along with constraints on baryon content from primordial nucleosynthesis theory [4], Supernovae I-a observations data [21] and Hubble constant measurements [25], [17] the following conclusion was made: space curvature is negligible,the slope of primordial power spectrum of density fluctuations is close to unity, content of matter in general density is 30%.

Subjects

Subjects :
Astronomy
QB1-991

Details

Language :
English, Russian, Ukrainian
ISSN :
16072855 and 24116602
Volume :
1
Issue :
2
Database :
Directory of Open Access Journals
Journal :
Вісник Астрономічної школи
Publication Type :
Academic Journal
Accession number :
edsdoj.2dc983185bf492aa29bb75a5afa7f37
Document Type :
article
Full Text :
https://doi.org/10.18372/2411-6602.01.2042