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Constraints on dark energy models from radial baryon acoustic scale measurements
Lado Samushia, Bharat Ratra
We use the radial baryon acoustic oscillation (BAO) measurements of Gaztanaga et al. (2008) to constrain parameters of dark energy models. These constraints are comparable with con…
Constraints on dark energy from baryon acoustic peak and galaxy cluster gas mass measurements
Lado Samushia, Bharat Ratra
We use baryon acoustic peak measurements by Eisenstein et al. (2005) and Percival et al. (2007a) and galaxy cluster gas mass fraction measurements of Allen et al. (2008) to constra…
Constraints on Dark Energy from Galaxy Cluster Gas Mass Fraction versus Redshift data
Lado Samushia, Bharat Ratra
We use the Allen et al. (2008) galaxy cluster gas mass fraction versus redshift data to constrain parameters of three different dark energy models: a cosmological constant dominate…
Galaxy Cluster Gas Mass Fraction and Hubble Parameter versus Redshift Constraints on Dark Energy
Lado Samushia, Gang Chen, Bharat Ratra
Galaxy cluster gas mass fraction versus redshift data and Hubble parameter versus redshift data are used to jointly constrain dark energy models. These constraints favor the Einste…
Cosmological Constraints from Hubble Parameter versus Redshift Data
Lado Samushia, Bharat Ratra
We use the Simon, Verde, & Jimenez (2005) determination of the redshift dependence of the Hubble parameter to constrain cosmological parameters in three dark energy cosmological mo…
Inflation and accelerated expansion TeVeS cosmological solutions
Luz Maria Diaz-Rivera, Lado Samushia, Bharat Ratra
We find exact exponentially expanding and contracting de Sitter solutions of the spatially homogeneous TeVeS cosmological equations of motion in the vacuum TeVeS model and a power…
Surface gravity waves in deep fluid at vertical shear flows
G. Gogoberidze, L. Samushia, G. D. Chagelishvili +2
Special features of surface gravity waves in deep fluid flow with constant vertical shear of velocity is studied. It is found that the mean flow velocity shear leads to non-trivial…