Journal Article

Emergent Universe from a composition of matter, exotic matter and dark energy

B. C. Paul, S. Ghose and P. Thakur

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 413, issue 1, pages 686-690
Published in print May 2011 | ISSN: 0035-8711
Published online April 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2010.18177.x
Emergent Universe from a composition of matter, exotic matter and dark energy

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A specific class of flat Emergent Universe (EU) is considered and its viability is tested in view of the recent observations. Model parameters are constrained from Stern data for Hubble parameter and redshift [H(z) versus z] and from a model-independent measurement of BAO peak parameter. It is noted that a composition of exotic matter, dust and dark energy, capable of producing an EU, cannot be ruled out with present data. Evolution of other relevant cosmological parameters, viz. density parameter (Ω) and effective equation of state (EOS) parameter (ωeff), are also shown.

Keywords: cosmological parameters; cosmology: observations; early Universe

Journal Article.  2911 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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