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Limits on a Gravitational Field Dependence of the Proton{Electron Mass Ratio from H2 in White Dwarf Stars
(American Physical SocietyPhysical Review Letters, 2014-09-18)
Spectra of molecular hydrogen (H2) are employed to search for a possible proton-to-electron
mass ratio (μ) dependence on gravity. The Lyman transitions of H2, observed with the Hubble
Space Telescope towards white dwarf ...
Probing the Gravitational Dependence of the Fine-Structure Constant from Observations of White Dwarf Stars
(Multidisciplinary Digital Publishing InstituteUniverse, 2017-06-01)
Hot white dwarf stars are the ideal probe for a relationship between the fine-structure constant and strong gravitational fields, providing us with an opportunity for a direct observational test. We study a sample of hot ...