TY - JOUR
T1 - KiDS+2dFLenS+GAMA
T2 - Testing the cosmological model with the EG statistic
AU - Amon, A.
AU - Blake, C.
AU - Heymans, C.
AU - Leonard, C. D.
AU - Asgari, M.
AU - Bilicki, M.
AU - Choi, A.
AU - Erben, T.
AU - Glazebrook, K.
AU - Harnois-Déraps, J.
AU - Hildebrandt, H.
AU - Hoekstra, H.
AU - Joachimi, B.
AU - Joudaki, S.
AU - Kuijken, K.
AU - Lidman, C.
AU - Loveday, J.
AU - Parkinson, D.
AU - Valentijn, E. A.
AU - Wolf, C.
N1 - Funding Information:
We thank the anonymous referee for careful and thorough comments, Shadab Alam for his advice and for kindly sharing measurements of the RSD parameter from BOSS DR12, and Arun Kan-nawadi Jayaraman and Vasiliy Demchenko for useful comments. Furthermore, we thank the referee for careful and thorough comments. AA, CH, MA, and SJ acknowledge support from the European Research Council under grant numbers 647112 (CH and MA) and 693024 (SJ). CB acknowledges the support of the Australian Research Council through the award of a Future Fellowship. DL acknowledges support from the McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University. HHi acknowledges support from an Emmy Noether grant (No. Hi 1495/2-1) of the Deutsche Forschungsgemeinschaft. HHo acknowledges support from Vici grant 639.043.512, financed by the Netherlands Organisation for Scientific Research (NWO). BJ acknowledges support by an STFC Ernest Rutherford Fellowship, grant reference ST/J004421/1. JHD acknowledges support from the EuropeansCommission under a Marie-Sklodwoska-Curie European Fellowship (EU project 656869). SJ also acknowledges support from the Beecroft Trust. DP acknowledges the support of the Australian Research Council through the award of a Future Fellowship. MB is supported by the Netherlands Organisation for Scientific Research, NWO, through grant number 614.001.451.
Funding Information:
We thank the GAMA consortium for providing access to their third data release. GAMA is a joint European-Australasian project based around a spectroscopic campaign using the Anglo-Australian Telescope. The GAMA input catalogue is based on data taken from the Sloan Digital Sky Survey and the UKIRT Infrared Deep Sky Survey. Complementary imaging of the GAMA regions is being obtained by a number of independent survey programmes including GALEX MIS, VST KiDS, VISTA VIKING, WISE, Herschel-ATLAS, GMRT, and ASKAP providing UV to radio coverage. GAMA is funded by the STFC (UK), the ARC (Australia), the AAO, and the participating institutions. The GAMA website is http://www.gama-survey.org/.
Funding Information:
Computations for the N-body simulations were performed in part on the Orcinus supercomputer at the WestGrid HPC consortium (www.westgrid.ca), in part on the GPC supercomputer at the SciNet HPC Consortium. SciNet is funded by: the Canada Foundation for Innovation under the auspices of Compute Canada; the Government of Ontario; Ontario Research Fund – Research Excellence; and the University of Toronto.
Publisher Copyright:
© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.
PY - 2018/9/21
Y1 - 2018/9/21
N2 - We present a new measurement of EG, which combines measurements of weak gravitational lensing, galaxy clustering, and redshift-space distortions. This statistic was proposed as a consistency test of General Relativity (GR) that is insensitive to linear, deterministic galaxy bias, and the matter clustering amplitude. We combine deep imaging data from KiDS with overlapping spectroscopy from 2dFLenS, BOSS DR12, and GAMA and find EG(z = 0.267) = 0.43 ± 0.13 (GAMA), EG(z = 0.305) = 0.27 ± 0.08 (LOWZ+2dFLOZ), and EG(z = 0.554) = 0.26 ± 0.07 (CMASS+2dFHIZ). We demonstrate that the existing tension in the value of thematter density parameter hinders the robustness of this statistic as solely a test of GR. We find that our EG measurements, as well as existing ones in the literature, favour a lower matter density cosmology than the cosmic microwave background. For a flat ΛCDM Universe, we find Ωm(z = 0) = 0.25 ± 0.03. With this paper, we publicly release the 2dFLenS data set at: http://2dflens.swin.edu.au.
AB - We present a new measurement of EG, which combines measurements of weak gravitational lensing, galaxy clustering, and redshift-space distortions. This statistic was proposed as a consistency test of General Relativity (GR) that is insensitive to linear, deterministic galaxy bias, and the matter clustering amplitude. We combine deep imaging data from KiDS with overlapping spectroscopy from 2dFLenS, BOSS DR12, and GAMA and find EG(z = 0.267) = 0.43 ± 0.13 (GAMA), EG(z = 0.305) = 0.27 ± 0.08 (LOWZ+2dFLOZ), and EG(z = 0.554) = 0.26 ± 0.07 (CMASS+2dFHIZ). We demonstrate that the existing tension in the value of thematter density parameter hinders the robustness of this statistic as solely a test of GR. We find that our EG measurements, as well as existing ones in the literature, favour a lower matter density cosmology than the cosmic microwave background. For a flat ΛCDM Universe, we find Ωm(z = 0) = 0.25 ± 0.03. With this paper, we publicly release the 2dFLenS data set at: http://2dflens.swin.edu.au.
KW - Gravitational lensing: weak
KW - Large-scale structure of universe
KW - Surveys, cosmology: observations
UR - http://www.scopus.com/inward/record.url?scp=85051464912&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85051464912&partnerID=8YFLogxK
U2 - 10.1093/mnras/sty1624
DO - 10.1093/mnras/sty1624
M3 - Article
AN - SCOPUS:85051464912
SN - 0035-8711
VL - 479
SP - 3422
EP - 3437
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -