Bayes in the Milky Way: determining the dark matter profile in our galaxy, a novel...
| Full text | |
| Author(s): |
Jesus, J. F.
[1, 2]
;
Gregorio, T. M.
[1]
;
Andrade-Oliveira, F.
[3, 4]
;
Valentim, R.
[5]
;
Matos, C. A. O.
[1]
Total Authors: 5
|
| Affiliation: | [1] Univ Estadual Paulista UNESP, Campus Expt Itapeva, Rua Geraldo Alckmin 519, BR-18409010 Itapeva, SP - Brazil
[2] Univ Estadual Paulista UNESP, Fac Engn, Dept Fis & Quim, Av Dr Ariberto Pereira Cunha 333, BR-12516410 Guaratingueta, SP - Brazil
[3] Univ Estadual Paulista UNESP, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil
[4] Lab Interinst & Astron LIneA, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ - Brazil
[5] Univ Fed Sao Paulo UNIFESP, ICAQF, Dep Fis, Unidade Jose Alencar, Rua Sao Nicolau 210, BR-09913030 Diadema, SP - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 477, n. 3, p. 2867-2873, JUL 2018. |
| Web of Science Citations: | 4 |
| Abstract | |
We compile 41 H(z) data from literature and use them to constrain O Lambda CDM and flat Lambda CDM parameters. We show that the available H(z) suffers from uncertainties overestimation and propose a Bayesian method to reduce them. As a result of this method, using H(z) only, we find, in the context of O Lambda CDM, H-0 = 69.5 +/- 2.5 kms(-1) Mpc(-1), Omega(m) = 0.242 +/- 0.036, and Omega(Lambda) = 0.68 +/- 0.14. In the context of flat Lambda CDMmodel, we have found H-0 = 70.4 +/- 1.2 kms(-1) Mpc(-1) and Omega(m) = 0.256 +/- 0.014. This corresponds to an uncertainty reduction of up to approximate to 30 per cent when compared to the uncorrected analysis in both cases. (AU) | |
| FAPESP's process: | 16/09831-0 - Neutron stars populations: Bayesian statistics tools |
| Grantee: | Rodolfo Valentim da Costa Lima |
| Support type: | Regular Research Grants |
| FAPESP's process: | 13/26258-4 - Superdense matter in the universe |
| Grantee: | Manuel Máximo Bastos Malheiro de Oliveira |
| Support type: | Research Projects - Thematic 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 type: | Regular Research Grants |