Article (Scientific journals)
H0LiCOW - V. New COSMOGRAIL time delays of HE 0435-1223: H0 to 3.8 per cent precision from strong lensing in a flat ΛCDM model
Bonvin, V.; Courbin, F.; Suyu, S. H. et al.
2017In Monthly Notices of the Royal Astronomical Society, 465, p. 4914-4930
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Originally published in MNRAS https://academic.oup.com/mnras/article/465/4/4914/2556158


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Keywords :
gravitational lensing: strong; galaxies: individual: HE 0435-1223; cosmology: observations; distance scale
Abstract :
[en] We present a new measurement of the Hubble Constant H[SUB]0[/SUB] and other cosmological parameters based on the joint analysis of three multiply imaged quasar systems with measured gravitational time delays. First, we measure the time delay of HE 0435-1223 from 13-yr light curves obtained as part of the COSMOGRAIL project. Companion papers detail the modelling of the main deflectors and line-of-sight effects, and how these data are combined to determine the time-delay distance of HE 0435-1223. Crucially, the measurements are carried out blindly with respect to cosmological parameters in order to avoid confirmation bias. We then combine the time-delay distance of HE 0435-1223 with previous measurements from systems B1608+656 and RXJ1131-1231 to create a Time Delay Strong Lensing probe (TDSL). In flat Λ cold dark matter (ΛCDM) with free matter and energy density, we find H[SUB]0[/SUB] =71.9^{+2.4}_{-3.0} {km s^{-1} Mpc^{-1}} and Ω _{Λ }=0.62^{+0.24}_{-0.35}. This measurement is completely independent of, and in agreement with, the local distance ladder measurements of H[SUB]0[/SUB]. We explore more general cosmological models combining TDSL with other probes, illustrating its power to break degeneracies inherent to other methods. The joint constraints from TDSL and Planck are H[SUB]0[/SUB] = 69.2_{-2.2}^{+1.4} {km s^{-1} Mpc^{-1}}, Ω _{Λ }=0.70_{-0.01}^{+0.01} and Ω _k=0.003_{-0.006}^{+0.004} in open ΛCDM and H[SUB]0[/SUB] =79.0_{-4.2}^{+4.4} {km s^{-1} Mpc^{-1}}, Ω _de=0.77_{-0.03}^{+0.02} and w=-1.38_{-0.16}^{+0.14} in flat wCDM. In combination with Planck and baryon acoustic oscillation data, when relaxing the constraints on the numbers of relativistic species we find N[SUB]eff[/SUB] = 3.34_{-0.21}^{+0.21} in N[SUB]eff[/SUB]ΛCDM and when relaxing the total mass of neutrinos we find Σm[SUB]ν[/SUB] ≤ 0.182 eV in m[SUB]ν[/SUB]ΛCDM. Finally, in an open wCDM in combination with Planck and cosmic microwave background lensing, we find H[SUB]0[/SUB] =77.9_{-4.2}^{+5.0} {km s^{-1} Mpc^{-1}}, Ω _de=0.77_{-0.03}^{+0.03}, Ω _k=-0.003_{-0.004}^{+0.004} and w=-1.37_{-0.23}^{+0.18}.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bonvin, V.;  Laboratory of Astrophysics, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Courbin, F.;  Laboratory of Astrophysics, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Suyu, S. H.;  Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, D-85740 Garching, Germany ; Physik-Department, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany ; Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan
Marshall, P. J.;  Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94035, USA
Rusu, C. E.;  Department of Physics, University of California, Davis, CA 95616, USA
Sluse, Dominique  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Tewes, M.;  Argelander-Institut für Astronomie, Auf dem Hügel 71, D-53121 Bonn, Germany
Wong, K. C.;  National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan ; Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan
Collett, T.;  Institute of Cosmology and Gravitation, University of Portsmouth, Burnaby Rd, Portsmouth PO1 3FX, UK
Fassnacht, C. D.;  STAR Institute, Quartier Agora - Allée du six Août, 19c B-4000 Liège, Belgium
Treu, T.;  Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
Auger, M. W.;  Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
Hilbert, S.;  Exzellenzcluster Universe, Boltzmannstr. 2, D-85748 Garching, Germany ; Ludwig-Maximilians-Universität, Universitäts-Sternwarte, Scheinerstr. 1, D-81679 München, Germany
Koopmans, L. V. E.;  Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700-AV Groningen, The Netherlands
Meylan, G.;  Laboratory of Astrophysics, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
Rumbaugh, N.;  Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
Sonnenfeld, A.;  Kavli IPMU (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan ; Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA ; Physics Department, University of California, Santa Barbara, CA 93106, USA
Spiniello, C.;  Max Planck Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, D-85740 Garching, Germany)
More authors (8 more) Less
Language :
English
Title :
H0LiCOW - V. New COSMOGRAIL time delays of HE 0435-1223: H0 to 3.8 per cent precision from strong lensing in a flat ΛCDM model
Publication date :
01 March 2017
Journal title :
Monthly Notices of the Royal Astronomical Society
ISSN :
0035-8711
eISSN :
1365-2966
Publisher :
Blackwell Publishing, Oxford, United Kingdom
Volume :
465
Pages :
4914-4930
Peer reviewed :
Peer Reviewed verified by ORBi
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