The gravitationally lensed supernova Refsdal appeared in multiple images produced through gravitational lensing by a massive foreground galaxy cluster. After the supernova appeared in 2014, lens models of the galaxy cluster predicted that an additional image of the supernova would appear in 2015, which was subsequently observed. We use the time delays between the images to perform a blinded measurement of the expansion rate of the Universe, quantified by the Hubble constant (H-0). Using eight cluster lens models, we infer H-0 = 64:8(+4:4) (-4:3) kilometers per second per megaparsec. Using the two models most consistent with the observations, we find H-0 = 66:6(+4:1) (-3:3) kilometers per second per megaparsec. The observations are best reproduced by models that assign dark-matter halos to individual galaxies and the overall cluster.
Title
Constraints on the Hubble constant from supernova Refsdal's reappearance
Published in
Science
Volume
380
Issue
6649
Date
2023-06-09
Publisher
Amer Assoc Advancement Science, Washington
ISSN
0036-8075
1095-9203
Grant
NASA/STScI grants: GO-14041
NSF: AST1518052
WPI Initiative (MEXT, Japan)
JSPS KAKENHI: JP18K03693
Cambridge Centre for Doctoral Training in Data-Intensive Science - UK Science and Technology Facilities Council (STFC)
NASA FINESST award: 80NSSC19K1414
(MCIU/AEI/MINECO/FEDER, UE) Ministerio de Ciencia, Investigacion y Universidades: PGC2018-101814-B-100
Agencia Estatal de Investigacion, Unidad de Excelencia Maria de Maeztu: MDM-2017-0765
United Kingdom Research and Innovation (UKRI) Future Leaders Fellowship: MR/S017216/1
European Research Council (ERC) under the Horizon 2020 Research and Innovation Program (COSMICLENS): 787886
Christopher R. Redlich Fund
TABASGO Foundation
UC Berkeley Miller Institute for Basic Research in Science
NASA: NNG17PX03C
Gordon and Betty Moore Foundation
Heising-Simons Foundation
David and Lucile Packard Foundation
VILLUM FONDEN investigator grant: 16599
NSF CAREER award: AST-0847157
NASA/Keck JPL RSA: 1508337
European Union's Horizon 2020 Research and Innovation Program under ERC grant: 101002652
Marie Sklodowska-Curie grant: 873089
United States-Israel Binational Science Foundation (BSF): 2020750
US NSF: 2109066
Ministry of Science and Technology, Israel
Record creation date
2024-03-18