期刊
MODERN PHYSICS LETTERS A
卷 24, 期 17, 页码 1355-1360出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217732309028850
关键词
Dark energy; constraint
资金
- NSF [10573003, 10703001]
- SRFDP [20070141034]
- NBRP of P. R. China [2003CB716300]
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.
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