Статья

CFHTLenS: testing the laws of gravity with tomographic weak lensing and redshift-space distortions

Fergus SimpsonScottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJCatherine HeymansScottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJDavid ParkinsonSchool of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, AustraliaChris BlakeCentre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, AustraliaM. KilbingerCEA Saclay, Service d’Astrophysique (SAp), Orme des Merisiers, Bât 709, F-91191 Gif-sur-Yvette, FranceJonathan BenjaminDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaT. ErbenArgelander Institute for Astronomy, University of Bonn, Auf dem Hügel 71, D-53121 Bonn, GermanyH. HildebrandtArgelander Institute for Astronomy, University of Bonn, Auf dem Hügel 71, D-53121 Bonn, GermanyHenk HoekstraDepartment of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, CanadaThomas KitchingScottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJY. MellierInstitut d’Astrophysique de Paris, Université Pierre et Marie Curie – Paris 6, 98 bis Boulevard Arago, F-75014 Paris, FranceL. MillerDepartment of Physics, Oxford University, Keble Road, Oxford OX1 3RHLudovic Van WaerbekeDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaJean CouponInstitute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, TaiwanLiping FuKey Lab for Astrophysics, Shanghai Normal University, 100 Guilin Road, 200234 Shanghai, ChinaJoachim Harnois-DérapsCanadian Institute for Theoretical Astrophysics, University of Toronto, ON M5S 3H8, CanadaMichael J. HudsonDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON N2L 3G1, CanadaKonrad KuijkenLeiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the NetherlandsBarnaby RoweCalifornia Institute of Technology, 1200 E California Boulevard, Pasadena, CA 91125, USAT. SchrabbackArgelander Institute for Astronomy, University of Bonn, Auf dem Hügel 71, D-53121 Bonn, GermanyE. SemboloniLeiden Observatory, Leiden University, Niels Bohrweg 2, NL-2333 CA Leiden, the NetherlandsSanaz VafaeiDepartment of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, CanadaM. VelanderDepartment of Physics, Oxford University, Keble Road, Oxford OX1 3RH

2012en

ABI

Аннотация

Dark energy may be the first sign of new fundamental physics in the Universe, taking either a physical form or revealing a correction to Einsteinian gravity. Weak gravitational lensing and galaxy peculiar velocities provide complementary probes of general relativity, and in combination allow us to test modified theories of gravity in a unique way. We perform such an analysis by combining measurements of cosmic shear tomography from the Canada–France–Hawaii Telescope Lensing Survey (CFHTLenS) with the growth of structure from the WiggleZ Dark Energy Survey and the Six-degree-Field Galaxy Survey, producing the strongest existing joint constraints on the metric potentials that describe general theories of gravity. For scale-independent modifications to the metric potentials which evolve linearly with the effective dark energy density, we find present-day cosmological deviations in the Newtonian potential and curvature potential from the prediction of general relativity to be ΔΨ/Ψ = 0.05 ± 0.25 and ΔΦ/Φ = −0.05 ± 0.3, respectively (68 per cent confidence limits).

Перевод пока недоступен

Идентификаторы

DOI: 10.1093/mnras/sts493

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar