Published November 27, 1967
| Version Published
Journal Article
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Does the fine-structure constant vary with cosmic time?
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Abstract
The fine structure constant at red shifts Δλ / λ≈0.2, corresponding to an epoch around two billion years ago, has been determined using the wavelengths of a pair of O III emission lines measured in the spectra of five radio galaxies. We find α(z=0.2) / α(lab)=1.001±0.002 probable error.
Additional Information
© 1967 The American Physical Society. Received 3 November 1967. The research of one of us (J.N.B.) was supported in part by the National Science Foundation under Grant No. GP-5391, and the U.S. Office of Naval Research under Contract No. Nonr-220(47). [J.N.B. was an] Alfred P. Sloan Fellow.Attached Files
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Additional details
Identifiers
- Eprint ID
- 12398
- Resolver ID
- CaltechAUTHORS:BAHprl67
Funding
- NSF
- GP-5391
- Office of Naval Research (ONR)
- Nonr-220(47)
- Alfred P. Sloan Foundation
Dates
- Created
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2008-12-11Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field