Speaker
Prof.
Rodolfo Valentim
(UNIFESP - Diadema)
Description
This poster aims to put constraints on the transition redshift $z_t$, which determines the onset of cosmic acceleration, in cosmological-model independent frameworks. In order to do that, we use the non-parametric Gaussian Process method with $H(z)$ and SNe Ia data. The deceleration parameter reconstruction from $H(z)$ data yields $z_t=0.59^{+0.12}_{-0.11}$. The reconstruction from SNe Ia data assumes spatial flatness and yields $z_t=0.683^{+0.11}_{-0.082}$. These results were found with a Gaussian kernel and we show that they are consistent with two other kernel choices.
Authors
Prof.
Rodolfo Valentim
(UNIFESP - Diadema)
Ms
Anderson Almeida Escobal
(Universidade Estadual Paulista - UNESP)
Prof.
José Fernando Jesus
(Universidade Estadual Paulista - UNESP)
Co-author
Prof.
Saulo H. Pereira
(Universidade Estadual Paulista - UNESP)
