Measuring the dark side (with weak lensing)

• Verfasst von: Amendola, Luca [VerfasserIn]
• Verfasst von: Kunz, Martin [VerfasserIn]
• Verfasst von: Sapone, Domenico [VerfasserIn]
• Titel: Measuring the dark side (with weak lensing)
• Verf.angabe: Luca Amendola, Martin Kunz and Domenico Sapone
• E-Jahr: 2008
• Jahr: 10 April 2008
• Umfang: 29 S.
• Fussnoten: Gesehen am 15.11.2017
• Titel Quelle: Enthalten in: Journal of cosmology and astroparticle physics
• Ort Quelle: London : IOP, 2003
• Jahr Quelle: 2008
• Band/Heft Quelle: (2008), 4, Artikel-ID 013, Seite 1-29
• ISSN Quelle: 1475-7516
• DOI: doi:10.1088/1475-7516/2008/04/013
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565361180

Abstract

We introduce a convenient parameterization of dark energy models that is general enough to include several modified gravity models and generalized forms of dark energy. In particular we take into account the linear perturbation growth factor, the anisotropic stress and the modified Poisson equation. We discuss the sensitivity of large-scale weak lensing surveys like the proposed DUNE satellite to these parameters (assuming systematic errors can be controlled). We find that a large-scale weak lensing tomographic survey is able to easily distinguish the Dvali-Gabadadze-Porrati model from ΛCDM and to determine the perturbation growth index to an absolute error of 0.02-0.04.