Year: 2025
Type: article
Abstract: We present cosmological constraints from eight strongly lensed quasars (hereafter, the TDCOSMO-2025 sample). Building on previous work, our analysis incorporated new deflector stellar velocity dispersions measured from spectra obtained with the James Webb Space Telescope (JWST), the Keck Telescopes, and the Very Large Telescope (VLT), utilizing improved methods. We used integrated JWST stellar kinematics for five lenses, VLT-MUSE for 2, and resolved kinematics from Keck and JWST for RX J1131−1231. We also considered two samples of non-time-delay lenses: 11 from the Sloan Lens ACS (SLACS) sample with Keck-KCWI resolved kinematics; and four from the Strong Lenses in the Legacy Survey (SL2S) sample. We improved our analysis of line-of-sight effects, the surface brightness profile of the lens galaxies, and orbital anisotropy, and corrected for projection effects in the dynamics. Our uncertainties are maximally conservative by accounting for the mass-sheet degeneracy in the deflectors’ mass density profiles. The analysis was blinded to prevent experimenter bias. Our primary result is based on the TDCOSMO-2025 sample, in combination with Ωm constraints from the Pantheon+ Type Ia supernovae (SN) dataset. In the flat Λ cold dark matter (CDM), we find $ H_0={71.6^{+3.9}_{-3.3}}{\,\mathrm{km}\, \mathrm{s}^{-1}\, \mathrm{Mpc}^{-1}} $. The SLACS and SL2S samples are in excellent agreement with the TDCOSMO-2025 sample, improving the precision on H0 in flat ΛCDM to 4.6%. Using the Dark Energy Survey SN Year-5 dataset (DES-SN5YR) or DESI-DR2 baryonic acoustic oscillations (BAO) likelihoods instead of Pantheon+ yields very similar results. We also present constraints in the open ΛCDM, wCDM, w0waCDM, and wϕCDM cosmologies. The TDCOSMO H0 inference is robust and consistent across all presented cosmological models, and our cosmological constraints in them agree with those from the BAO and SN.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, National Aeronautics and Space Administration, W. M. Keck Foundation, Gordon and Betty Moore Foundation, California Institute of Technology, Space Telescope Science Institute, European Commission, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Fonds De La Recherche Scientifique - FNRS, Max-Planck-Gesellschaft, European Southern Observatory, Agencia Nacional de Investigación y Desarrollo, Stony Brook University, Japan Society for the Promotion of Science
Awards: G103270039, 社会科教材としての郷土資料の集成とその活用, INSTITUTO MILENIO DE ASTROFISICA, G1338664626, Probing the Cosmos with Strong Gravitational Lensing, G1897041155, G2073399071, G2108322191, G256731684, G2629829676, An Independent Test of the Hubble Constant Tension with Time-Delay Cosmography, Time-delay cosmography in the era of large sky sruvey, Collaborative Research: A Precise and Accurate Determination of the Hubble Constant Through Stellar Kinematics of Lens Galaxies, Astrophysics enabled by Keck All Sky Precision Adaptive Optics, G3418879279, G343462026, G3524113997, Collaborative Research: A Precise and Accurate Determination of the Hubble Constant Through Stellar Kinematics of Lens Galaxies, G380733860, G3858515798, GRAVITATIONAL LENSING A TOOL TO PROBE THE LENS AND THE SOURCE STRUCTURES, G4066435496, Phasenübergänge und Instabilitäten, Size quantization effects of semiconductor nanoparticles on the excited-state dynamics studied by laser spectroscope with femtosecond time resolution., G433322167, EXC 2094: ORIGINS: Vom Ursprung des Universums bis zu den ersten Bausteinen des Lebens, Collaborative Research: Toward a 1% measurement of the Hubble Constant with gravitational time delays, Time-delay cosmography in the era of large sky surveys, G5568641063, G58316358, Dark Matter and Cosmology with Gravitational Lenses, G6273510985, Cosmology with wide-field surveys and a fast emulator, G6721680378, G685589434, G6881528610, G7316740004, G7772826265, G8187276046, G8914465953, G978085619
OpenAlex ID: W7116040247
FWCI:
Cites:
Cited by:
Related to: