Universe, Volume 3, Issue 2 (June 2017) – 24 articles
Cover Story (view full-size image): Does the fine structure constant depend on gravitational potential? Hot white dwarf stars are the ideal probe for a relationship between the fine-structure constant and strong gravitational fields, providing us with a direct means of testing this important question. Potential variation manifests itself as shifts in the observed wavelengths of absorption lines when compared to laboratory wavelengths. A successful detection would be the first direct measurement of a gravitational field effect on a bare constant of nature. View the paper
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