Cosmological Constraints from Hubble Parameter versus Redshift Data | Zendy

Lado Samushia | Zendy; Bharat Ratra | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Cosmological Constraints from Hubble Parameter versus Redshift Data

Author(s) -

Lado Samushia,

Bharat Ratra

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/508662

Subject(s) - physics , dark energy , astrophysics , redshift , hubble's law , galaxy , supernova , lambda cdm model , deceleration parameter , equation of state , redshift survey , cosmology , quantum mechanics

We use the Simon, Verde, & Jimenez (2005) determination of the redshiftdependence of the Hubble parameter to constrain cosmological parameters inthree dark energy cosmological models. We consider the standard $\Lambda$CDMmodel, the XCDM parameterization of the dark energy equation of state, and aslowly rolling dark energy scalar field with an inverse power-law potential.The constraints are restrictive, consistent with those derived from Type Iasupernova redshift-magnitude data, and complement those from galaxy cluster gasmass fraction versus redshift data.Comment: Minor changes, including an estimate for H_0. ApJL, in pres

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research