A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team
Adam G. Riess · Adam G. Riess et al.; SH0ES Team (multiple co-authors).
Summary
This SH0ES Team paper presents a refined local measurement of the Hubble constant using Hubble Space Telescope observations of Cepheid variables calibrating Type Ia supernovae. By expanding and improving the distance-ladder sample, the authors achieve roughly 1 km/s/Mpc total uncertainty. The result reinforces the significant tension with the Hubble constant inferred from the early-universe CMB.
Key findings
- Measures the local Hubble constant at about 73 km/s/Mpc with ~1 km/s/Mpc uncertainty.
- Uses a Cepheid-calibrated Type Ia supernova distance ladder with HST data.
- Strengthens the ~5-sigma Hubble tension between local and CMB-based values.
Subjects & keywords
Cite this paper
Adam G. Riess [Adam G. Riess et al.; SH0ES Team (multiple co-authors).] (2022). A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team. The Astrophysical Journal Letters. https://doi.org/10.3847/2041-8213/ac5c5b
@article{riess2022comprehensive,
author = {Adam G. Riess and {Adam G. Riess et al.; SH0ES Team (multiple co-authors).}},
title = {A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team},
journal = {The Astrophysical Journal Letters},
year = {2022},
doi = {10.3847/2041-8213/ac5c5b},
url = {https://doi.org/10.3847/2041-8213/ac5c5b}
}