alpha :a constant that is not a constant?

Details alpha :a constant that is not a constant? alpha :a constant that is not a constant?

2002-07-18

arxiv.org/abs/astro-ph/0207390v1

Astronomy and Astrophysics

Astrophysics

9 pages with 3 ps figures included, to appear on the Proc. of ESO-CERN-ESA Symposium on Astronomy, Cosmology and Fundamental P

Scientific paper

10.1007/10857580_14

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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