Investigating the transition from cosmic deceleration to acceleration.

Autor:	Waga, I., Calvão, M. O., Giostri, R., Jorás, S. E., Lago, B. L., Reis, R. R. R., Vargas dos Santos, M.
Předmět:	RADIATIVE transitions PHYSICAL cosmology SUPERNOVAE BARYONS COSMIC background radiation CONSTRAINTS (Physics)
Zdroj:	AIP Conference Proceedings; Oct2012, Vol. 1471 Issue 1, p3-9, 7p, 2 Charts, 2 Graphs
Abstrakt:	By using type Ia supernovae (SN Ia) data in combination with recent baryonic acoustic oscillations (BAO) and cosmic microwave background (CMB) observations we constrain a kink-like parametrization of the deceleration parameter (q). By adopting a likelihood approach to deal with the SN Ia data we constrain the model parameters and show that, in combination with BAO/CMB, SN Ia data processed with the MLCS2k2 fitter favors Dvali-Gabadadze-Porrati-like cosmological models, while SALT2 fitter favors ΛCDM-like ones. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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