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| DOI | 10.1088/0004-637X/813/1/69 | ||||
| Año | 2015 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
In this paper we constrain four alternative models to the late cosmic acceleration in the universe: Chevallier-Polarski-Linder (CPL), interacting dark energy (IDE), Ricci holographic dark energy (HDE), and modified polytropic Cardassian (MPC). Strong lensing (SL) images of background galaxies produced by the galaxy cluster Abell 1689 are used to test these models. To perform this analysis we modify the LENSTOOL lens modeling code. The value added by this probe is compared with other complementary probes: Type Ia supernovae (SN Ia), baryon acoustic oscillations (BAO), and cosmic microwave background (CMB). We found that the CPL constraints obtained for the SL data are consistent with those estimated using the other probes. The IDE constraints are consistent with the complementary bounds only if large errors in the SL measurements are considered. The Ricci HDE and MPC constraints are weak, but they are similar to the BAO, SN Ia, and CMB estimations. We also compute the figure of merit as a tool to quantify the goodness of fit of the data. Our results suggest that the SL method provides statistically significant constraints on the CPL parameters but is weak for those of the other models. Finally, we show that the use of the SL measurements in galaxy clusters is a promising and powerful technique to constrain cosmological models. The advantage of this method is that cosmological parameters are estimated by modeling the SL features for each underlying cosmology. These estimations could be further improved by SL constraints coming from other galaxy clusters.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | MAGANA-ZAPATA, JUAN | Hombre |
Universidad de Valparaíso - Chile
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| 2 | MOTTA-CIFUENTES, VERONICA | Mujer |
Universidad de Valparaíso - Chile
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| 3 | CARDENAS-GALINDO, VICTOR MANUEL | Hombre |
Universidad de Valparaíso - Chile
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| 4 | Verdugo, Tomas | Hombre |
Universidad de Valparaíso - Chile
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| 5 | Jullo, Eric | Hombre |
Aix Marseille Univ - Francia
Laboratoire d'Astrophysique de Marseille - Francia |
| Fuente |
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| FONDECYT |
| ECOS-CONICYT |
| DIUV |
| Centre national d'etudes spatiales (CNES) |
| Centro de Astrofisica de Valparaiso |
| ESO Comite Mixto |
| Gemini |
| project Equip@Meso of the program 'Investissements d'Avenir' |
| Agradecimiento |
|---|
| We thank the anonymous referee for thoughtful suggestions. J. M. acknowledges the support from ESO Comite Mixto, Gemini 32130024, ECOS-CONICYT C12U02, and the hospitality of the Laboratoire d'Astrophysique de Marseille (LAM), where part of this work was done. V. M. acknowledges support from FONDECYT 1120741, ECOS-CONICYT C12U02, and Centro de Astrofisica de Valparaiso. V. C. acknowledges support from FONDECYT Grant 1110230 and DIUV 13/2009. T. V. thanks Dr. V. Motta for the kind invitation to work in Valparaiso, as well as the staff of the Instituto de Fisica y Astronomia of the Universidad de Valparaiso. E. J. acknowledges the support of Centre National d'Etudes Spatiales (CNES). This work was granted access to the High Performance Computing (HPC) resources of Aix-Marseille Universite financed by the project Equip@Meso (ANR-10-EQPX-29-01) of the program 'Investissements d'Avenir' supervised by the Agence Nationale pour la Recherche. |