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CONSTRAINS ON THE Q...
CONSTRAINS ON THE QUINTESSENCE FROM OBSERVATIONAL DATA
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Badescu, A. M. (författare)
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- Horellou, Cathy, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2011
- 2011
- Engelska.
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Ingår i: Romanian Reports on Physics. - 1221-1451 .- 1841-8759. ; 63:3, s. 852-861
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- We investigated a flat Universe where the quintessence has been approximated by the first order Chebyshev polynomials. We used different cosmological measurements: angular diameter, luminosity distance and the Hubble parameter to constrain it. The first two types of measurements favor a time dependent quintessence with a value of the quintessence at the present epoch higher than in the cosmological constant case. Hubble parameter measurements support a Universe close to the one given by the cosmological constant case.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- ia supernovae
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