| Full text | |
| Author(s): |
Jesus, J. F.
;
Valentim, R.
;
Escobal, A. A.
;
Pereira, S. H.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 4, p. 16-pg., 2020-04-01. |
| Abstract | |
This paper 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(-0.11)(+0.12). The reconstruction from SNe Ia data assumes spatial flatness and yields z(t) = 0.683(-0.082)(+0.11). These results were found with a Gaussian kernel and we show that they are consistent with two other kernel choices. (AU) | |
| FAPESP's process: | 16/09831-0 - Neutron Stars populations: bayesian statistics tools |
| Grantee: | Rodolfo Valentim da Costa Lima |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/05859-0 - The accelerating universe: nature and tests of dark energy and dark matter |
| Grantee: | José Fernando de Jesus |
| Support Opportunities: | Regular Research Grants |