Published in
American Association for the Advancement of Science, Science Advances, 17(6), 2020
Links
Tools
Four direct measurements of the fine-structure constant 13 billion years ago
Journal article published in 2020 by
Michael R. Wilczynska 
,
John K. Webb ,
Matthew Bainbridge,
John D. Barrow,
Sarah E. I. Bosman,
Robert F. Carswell ,
Mariusz P. Dąbrowski ,
Vincent Dumont ,
Chung-Chi Lee,
Ana Catarina Leite ,
Katarzyna Leszczyńska,
Jochen Liske ,
Konrad Marosek ,
Carlos J. A. P. Martins ,
Dinko Milaković
and other authors.
,
John K. Webb ,
Matthew Bainbridge,
John D. Barrow,
Sarah E. I. Bosman,
Robert F. Carswell ,
Mariusz P. Dąbrowski ,
Vincent Dumont ,
Chung-Chi Lee,
Ana Catarina Leite ,
Katarzyna Leszczyńska,
Jochen Liske ,
Konrad Marosek ,
Carlos J. A. P. Martins ,
Dinko Milaković
and other authors.
This paper is made freely available by the publisher.
Full text: Download
Postprint:
archiving forbidden
Data provided by 
Abstract
Fine-structure constant measurements 13 Ga ago, plus lower redshift data, test space-time variation of a fundamental constant.