TDCOSMO: XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy
Abstract
Strong-lensing time delays enable the measurement of the Hubble constant (H0) independently of other traditional methods. The main limitation to the precision of time-delay cosmography is mass-sheet degeneracy (MSD). Some of the previous TDCOSMO analyses broke the MSD by making standard assumptions about the mass density profile of the lens galaxy, reaching 2% precision from seven lenses. However, this approach could potentially bias the H0 measurement or underestimate the errors. For this work, we broke the MSD for the first time using spatially resolved kinematics of the lens galaxy in RXJ1131–1231 obtained from the Keck Cosmic Web Imager spectroscopy, in combination with previously published time delay and lens models derived from Hubble Space Telescope imaging. This approach allowed us to robustly estimate H0, effectively implementing a maximally flexible mass model. Following a blind analysis, we estimated the angular diameter distance to the lens galaxy Dd = 865$$^{+85}_{-81}$$ Mpc and the time-delay distance DΔt = 2180$$^{+472}_{-271}$$ Mpc, giving H0 = 77.1$$^{+7.3}_{-7.1}$$ km s–1 Mpc–1 – for a flat Λ cold dark matter cosmology. The error budget accounts for all uncertainties, including the MSD inherent to the lens mass profile and line-of-sight effects, and those related to the mass–anisotropy degeneracy and projection effects. Our new measurement is in excellent agreement with those obtained in the past using standard simply parametrized mass profiles for this single system (H0 = 78.3$$^{+3.4}_{-3.3}$$ km s–1 Mpc–1) and for seven lenses (H0 = 74.2$$^{+1.6}_{-1.6}$$ km s–1 Mpc–1), or for seven lenses using single-aperture kinematics and the same maximally flexible models used by us (H0 = 73.3$$^{+5.8}_{-5.8}$$ km s–1 Mpc–1). This agreement corroborates the methodology of time-delay cosmography.
- Authors:
-
[1];
[3];
[4];
[5];
[6];
[8];
[9];
[10];
[2];
- Univ. of Chicago, IL (United States)
- Univ. of California, Davis, CA (United States)
- Univ. of California, Los Angeles, CA (United States)
- Univ. of Oxford (United Kingdom)
- Technical Univ. of Munich (Germany); Max Planck Institute for Astrophysics (Germany); Academia Sinica, Taipei (Taiwan)
- California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States)
- Univ. of Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- STAR Institute, Liege (Belgium)
- Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Stony Brook Univ., NY (United States)
- Ecole Polytechnique Federale Lausanne (EPFL) (Switzerland)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF); Moore Foundation
- OSTI Identifier:
- 1909867
- Report Number(s):
- FERMILAB-PUB-23-013-PPD; arXiv:2301.02656
Journal ID: ISSN 0004-6361; oai:inspirehep.net:2621298; TRN: US2312179
- Grant/Contract Number:
- AC02-07CH11359; HST-HF2-51492; NAS5-26555; AST-1906976; AST-1836016; AST-1907396; AST-1909297; 8548
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Astronomy and Astrophysics
- Additional Journal Information:
- Journal Volume: 673; Journal ID: ISSN 0004-6361
- Publisher:
- EDP Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; distance scale; strong gravitational lensing; kinematics; dynamics; elliptical galaxies; lenticular galaxies; RXJ1131−1231
Citation Formats
Shajib, Anowar J., Mozumdar, Pritom, Chen, Geoff C.-F., Treu, Tommaso, Cappellari, Michele, Knabel, Shawn, Suyu, Sherry H., Bennert, Vardha N., Frieman, Joshua A., Sluse, Dominique, Birrer, Simon, Courbin, Frederic, Fassnacht, Christopher D., Villafaña, Lizvette, and Williams, Peter R. TDCOSMO: XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy. United States: N. p., 2023.
Web. doi:10.1051/0004-6361/202345878.
Shajib, Anowar J., Mozumdar, Pritom, Chen, Geoff C.-F., Treu, Tommaso, Cappellari, Michele, Knabel, Shawn, Suyu, Sherry H., Bennert, Vardha N., Frieman, Joshua A., Sluse, Dominique, Birrer, Simon, Courbin, Frederic, Fassnacht, Christopher D., Villafaña, Lizvette, & Williams, Peter R. TDCOSMO: XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy. United States. https://doi.org/10.1051/0004-6361/202345878
Shajib, Anowar J., Mozumdar, Pritom, Chen, Geoff C.-F., Treu, Tommaso, Cappellari, Michele, Knabel, Shawn, Suyu, Sherry H., Bennert, Vardha N., Frieman, Joshua A., Sluse, Dominique, Birrer, Simon, Courbin, Frederic, Fassnacht, Christopher D., Villafaña, Lizvette, and Williams, Peter R. Mon .
"TDCOSMO: XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy". United States. https://doi.org/10.1051/0004-6361/202345878. https://www.osti.gov/servlets/purl/1909867.
@article{osti_1909867,
title = {TDCOSMO: XII. Improved Hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy},
author = {Shajib, Anowar J. and Mozumdar, Pritom and Chen, Geoff C.-F. and Treu, Tommaso and Cappellari, Michele and Knabel, Shawn and Suyu, Sherry H. and Bennert, Vardha N. and Frieman, Joshua A. and Sluse, Dominique and Birrer, Simon and Courbin, Frederic and Fassnacht, Christopher D. and Villafaña, Lizvette and Williams, Peter R.},
abstractNote = {Strong-lensing time delays enable the measurement of the Hubble constant (H0) independently of other traditional methods. The main limitation to the precision of time-delay cosmography is mass-sheet degeneracy (MSD). Some of the previous TDCOSMO analyses broke the MSD by making standard assumptions about the mass density profile of the lens galaxy, reaching 2% precision from seven lenses. However, this approach could potentially bias the H0 measurement or underestimate the errors. For this work, we broke the MSD for the first time using spatially resolved kinematics of the lens galaxy in RXJ1131–1231 obtained from the Keck Cosmic Web Imager spectroscopy, in combination with previously published time delay and lens models derived from Hubble Space Telescope imaging. This approach allowed us to robustly estimate H0, effectively implementing a maximally flexible mass model. Following a blind analysis, we estimated the angular diameter distance to the lens galaxy Dd = 865$^{+85}_{-81}$ Mpc and the time-delay distance DΔt = 2180$^{+472}_{-271}$ Mpc, giving H0 = 77.1$^{+7.3}_{-7.1}$ km s–1 Mpc–1 – for a flat Λ cold dark matter cosmology. The error budget accounts for all uncertainties, including the MSD inherent to the lens mass profile and line-of-sight effects, and those related to the mass–anisotropy degeneracy and projection effects. Our new measurement is in excellent agreement with those obtained in the past using standard simply parametrized mass profiles for this single system (H0 = 78.3$^{+3.4}_{-3.3}$ km s–1 Mpc–1) and for seven lenses (H0 = 74.2$^{+1.6}_{-1.6}$ km s–1 Mpc–1), or for seven lenses using single-aperture kinematics and the same maximally flexible models used by us (H0 = 73.3$^{+5.8}_{-5.8}$ km s–1 Mpc–1). This agreement corroborates the methodology of time-delay cosmography.},
doi = {10.1051/0004-6361/202345878},
journal = {Astronomy and Astrophysics},
number = ,
volume = 673,
place = {United States},
year = {Mon Apr 24 00:00:00 EDT 2023},
month = {Mon Apr 24 00:00:00 EDT 2023}
}
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- Monthly Notices of the Royal Astronomical Society, Vol. 478, Issue 4
H0LiCOW XII. Lens mass model of WFI2033 − 4723 and blind measurement of its time-delay distance and H0
journal, September 2019
- Rusu, Cristian E.; Wong, Kenneth C.; Bonvin, Vivien
- Monthly Notices of the Royal Astronomical Society, Vol. 498, Issue 1
Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies
journal, June 2022
- Abdalla, Elcio; Abellán, Guillermo Franco; Aboubrahim, Amin
- Journal of High Energy Astrophysics, Vol. 34
The internal structure of the lens PG1115+080: breaking degeneracies in the value of the Hubble constant
journal, September 2002
- Treu, T.; Koopmans, L. V. E.
- Monthly Notices of the Royal Astronomical Society, Vol. 337, Issue 2
Unified lensing and kinematic analysis for any elliptical mass profile
journal, July 2019
- Shajib, Anowar J.
- Monthly Notices of the Royal Astronomical Society, Vol. 488, Issue 1
The Pantheon+ Analysis: Cosmological Constraints
journal, October 2022
- Brout, Dillon; Scolnic, Dan; Popovic, Brodie
- The Astrophysical Journal, Vol. 938, Issue 2
Improving the Precision of Time-Delay Cosmography with Observations of Galaxies Along the line of Sight
journal, April 2013
- Greene, Zach S.; Suyu, Sherry H.; Treu, Tommaso
- The Astrophysical Journal, Vol. 768, Issue 1
Efficient solution of the anisotropic spherically aligned axisymmetric Jeans equations of stellar hydrodynamics for galactic dynamics
journal, April 2020
- Cappellari, Michele
- Monthly Notices of the Royal Astronomical Society, Vol. 494, Issue 4
Improving the full spectrum fitting method: accurate convolution with Gauss–Hermite functions
journal, November 2016
- Cappellari, Michele
- Monthly Notices of the Royal Astronomical Society, Vol. 466, Issue 1
The SWELLS survey - IV. Precision measurements of the stellar and dark matter distributions in a spiral lens galaxy: The SWELLS survey - IV
journal, May 2012
- Barnabè, Matteo; Dutton, Aaron A.; Marshall, Philip J.
- Monthly Notices of the Royal Astronomical Society, Vol. 423, Issue 2
lenstronomy II: A gravitational lensing software ecosystem
journal, June 2021
- Birrer, Simon; Shajib, Anowar; Gilman, Daniel
- Journal of Open Source Software, Vol. 6, Issue 62