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Indexed by:期刊论文

Date of Publication:2009-06-07

Journal:MODERN PHYSICS LETTERS A

Included Journals:SCIE

Volume:24

Issue:17

Page Number:1355-1360

ISSN No.:0217-7323

Key Words:Dark energy; constraint

Abstract:In this paper, a holographic dark energy model, dubbed Ricci dark energy, is confronted with cosmological observational data from type la Supernovae (SN la), baryon acoustic oscillations (BAO) and cosmic microwave background (CMB). By using maximum likelihood method, we found that Ricci dark energy model is a viable candidate of dark energy model with the best fit parameters: Omega(m0) = 0.34 +/- 0.04, alpha = 0.38 +/- 0.03 with 1 sigma error. Here, alpha is a dimensionless parameter related to Ricci dark energy rho(R) and Ricci scalar R, i.e. rho(R) proportional to alpha R.