alpha :a constant that is not a constant?
classification
🌌 astro-ph
hep-phnucl-th
keywords
alphaconstantfindobservationalstructureancientconstancydata
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We review the observational information on the constancy of the fine structure constant alpha. We find that small improvements on the measurement of ^{187}Re lifetime can provide significant progress in exploring the range of variability suggested by QSO data. We also discuss the effects of a time varying alpha on stellar structure and evolution. We find that radioactive dating of ancient stars can offer a new observational window.
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