CONSTRAINTS ON VARIABLE CHAPLYGIN GAS MODEL FROM TYPE IA SUPERNOVAE AND BARYON ACOUSTIC OSCILLATIONS
2010 ◽
Vol 25
(09)
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pp. 737-747
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Keyword(s):
Type Ia
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We apply the type Ia supernovae union dataset and the baryon acoustic oscillations data at z = 0.2 and z = 0.35 to constrain variable Chaplygin gas (VCG) model as the unification of dark matter and dark energy. It is shown that the confidence levels for VCG model parameters are [Formula: see text]. And it indicates that the values of transition redshift and current deceleration parameter are: [Formula: see text]. In addition, we plot the evolution trajectory of the VCG model in the statefinder parameter r–s plane and show the discrimination between this scenario and other dark energy models.
2020 ◽
Vol 2020
(07)
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pp. 015-015
Testing cosmic transparency with the latest baryon acoustic oscillations and type Ia supernovae data
2013 ◽
Vol 13
(6)
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pp. 635-640
Keyword(s):
Type Ia
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