Tracking quintessence by cosmic shear
C. SchimdDSM/DAPNIA, CEA/Saclay, 91191 Gif-sur-Yvette Cedex, France e-mail: [email protected]I. TerenoDepartamento de Fisica, Universidade de Lisboa, 1749-016 Lisboa, PortugalJean–Philippe UzanInstitut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98bis bd Arago, 75014 Paris, FranceY. MellierInstitut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98bis bd Arago, 75014 Paris, FranceLudovic Van WaerbekeDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver V6T 1Z1, CanadaE. SemboloniInstitut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98bis bd Arago, 75014 Paris, FranceHenk HoekstraDepartment of Physics and Astronomy, University of Victoria, Victoria V8P 52C, CanadaLiping FuInstitut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98bis bd Arago, 75014 Paris, FranceAlain RiazueloInstitut d'Astrophysique de Paris, UMR 7095 CNRS, Université Pierre & Marie Curie, 98bis bd Arago, 75014 Paris, France
2006en
ABI
Аннотация
Aims.Dark energy can be investigated in two complementary ways, by considering either general parameterizations or physically well-defined models. Following the second route, we explore the observational constraints on quintessence models where the acceleration of our universe is driven by a slow-rolling scalar field. Using weak lensing data to investigate high-energy motivated models of dark energy for the first time, the analysis focuses on cosmic shear, examining how weak lensing surveys can constrain dark energy, discussing the limitations due to the lack of knowledge of the non-linear regime, and combining with type Ia supernovae data and cosmic microwave background observations to lift some degeneracies.
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