| Texto completo | |
| Autor(es): |
Benitez-Herrera, S.
[1]
;
Ishida, E. E. O.
[2, 1]
;
Maturi, M.
[3]
;
Hillebrandt, W.
[1]
;
Bartelmann, M.
[3]
;
Roepke, F.
[4]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Max Planck Inst Astrophys, D-85741 Garching - Germany
[2] Univ Sao Paulo, IAG, BR-05508900 Sao Paulo - Brazil
[3] Heidelberg Univ, ITA, Zentrum Astron, D-69120 Heidelberg - Germany
[4] Univ Wurzburg, D-97074 Wurzburg - Germany
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Monthly Notices of the Royal Astronomical Society; v. 436, n. 1, p. 854-858, NOV 2013. |
| Citações Web of Science: | 9 |
| Resumo | |
We perform a model-independent reconstruction of the cosmic expansion rate based on Type Ia supernova data. Using the Union2.1 data set, we show that the Hubble parameter behaviour allowed by the data without making any hypothesis about cosmological model or underlying gravity theory is consistent with a flat A cold dark matter universe having H-0 = 70.43 +/- 0.33 and Omega(m) = 0.297 +/- 0.020, weakly dependent on the choice of initial scatter matrix. This is in closer agreement with the recently released Planck results (H-0 = 67.3 +/- 1.2, Omega(m) = 0.314 +/- 0.020) than other standard analyses based on Type Ia supernova data. We argue this might be an indication that, in order to tackle subtle deviations from the standard cosmological model present in Type Ia supernova data, it is mandatory to go beyond parametrized approaches. (AU) | |
| Processo FAPESP: | 11/09525-3 - Estudos de supernovas IA em grandes levantamentos de galáxias |
| Beneficiário: | Emille Eugenia de Oliveira Ishida |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |