TDCOSMO XXVIII. The Hubble constant from the quadruply lensed quasar J1537$-$3010 with precise time delays
Year: 2026
Type: preprint
Abstract: We present the first measurement of the Hubble constant ($H_0$) from the quadruply-lensed quasar J1537$-$3010, which has optically-measured time delays at $\sim2 \%$ precision. We combine these delays with multi-band imaging data from the Hubble Space Telescope (HST) and model the system with two independent software and teams. We adopt a mass profile that is maximally degenerate with $H_0$ to fully incorporate the mass-sheet degeneracy in the error budget, with nuisance parameters constrained by spatially resolved stellar kinematics from the Multi Unit Spectroscopic Explorer (MUSE) and a line-of-sight (LoS) analysis using the Euclid Flagship simulation. The entire analysis is performed blindly to $H_0$, distances and mass density slope of the main deflector. After unblinding, we measure $H_0 = 75.5^{+9.3}_{-5.8}\ {\rm km\,s^{-1}\,Mpc^{-1}}$, corresponding to a $10\%$ precision measurement from a single system. This precision is driven by conservative lens modeling assumptions including differences between lens modeling methods and the limited stellar kinematics constraints, from which we infer a total mass-sheet parameter $λ\equiv(1-κ_{\rm ext})λ_{\rm int} = 0.89^{+0.11}_{-0.06}$ ($λ_{\rm int}=0.89^{+0.09}_{-0.07}$) that is consistent with current results for elliptical galaxies ($λ\approx 1$). Our lensing constraints, stellar kinematic measurements and LoS characterization will be included in subsequent population-level measurements of $H_0$. Moreover, our lens models combined with future near-infrared spectroscopy and imaging from the James Webb Space Telescope will further reduce the uncertainties on $H_0$ from J1537$-$3010 alone, bringing it closer to the few percents precision of the time delays.
Source: arXiv (Cornell University)
Authors: Galan, A., Schweinfurth, A. G., Suyu, S. H., Johnson, D. P., Chawla, A., Sluse, D., Kharchilava, G. V., Buckley-Geer, E., Lin, H., Knabel, S., Sheu, W., Ertl, S., Anguita, T., Birrer, S., Courbin, F., Dux, F., Millon, M., Motta, V., Schuldt, S., Treu, T., Williams, D. M., Cappellari, M., Wong, K. C., Eckert, D.
Institutions: University of Geneva, Max Planck Institute for Astrophysics, Technical University of Munich, University of Liège, Armagh Observatory & Planetarium, Fermi National Accelerator Laboratory, University of California, Los Angeles, Stony Brook University, Institut de Ciències del Cosmos, Universitat de Barcelona, European Southern Observatory, École Polytechnique Fédérale de Lausanne, University of Valparaíso, University of Oxford
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, Gordon and Betty Moore Foundation, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Generalitat de Catalunya, Max-Planck-Gesellschaft, Centre National de la Recherche Scientifique, Agencia Nacional de Investigación y Desarrollo, Institut de Física d'Altes Energies, Japan Society for the Promotion of Science, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Agencia Estatal de Investigación
Awards: G2064873908, G2462415295, Collaborative Research: A Precise and Accurate Determination of the Hubble Constant Through Stellar Kinematics of Lens Galaxies, G2988934680, G3005324705, Astrophysics enabled by Keck All Sky Precision Adaptive Optics, G3546882995, GRAVITATIONAL LENSING A TOOL TO PROBE THE LENS AND THE SOURCE STRUCTURES, G4008337681, G4066435496, G4072214037, EXC 2094: ORIGINS: Vom Ursprung des Universums bis zu den ersten Bausteinen des Lebens, LENSED AGN FROM EUCLID AND LSST OPTIMIZING SAMPLES FOR COSMOGRAPHY AND THE PHYSICAL STRUCTURE OF HIGH-Z AGN., G5922099756, G6027777510, G6344031981, G69051668, 古代説話における諸寺縁起の研究, CENTRO DE ASTROFISICA Y TECNOLOGIAS AFINES (CATA)
OpenAlex ID: W7206159728