| Full text | |
| Author(s): |
Benitez-Herrera, S.
[1]
;
Ishida, E. E. O.
[2, 1]
;
Maturi, M.
[3]
;
Hillebrandt, W.
[1]
;
Bartelmann, M.
[3]
;
Roepke, F.
[4]
Total Authors: 6
|
| Affiliation: | [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
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 436, n. 1, p. 854-858, NOV 2013. |
| Web of Science Citations: | 9 |
| Abstract | |
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) | |
| FAPESP's process: | 11/09525-3 - Analysis of type IA supernovae in wide-field galaxy surveys |
| Grantee: | Emille Eugenia de Oliveira Ishida |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |