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- Title
Searching for a secular variation of the gravitational constant using strong gravitational fields.
- Authors
Le, T. D.
- Abstract
Searching for variations in dimensionless physical constants presents a meaningful characteristic in experimental and observational studies. One of the most valuable explorations of these variations could depend on the evolution of white dwarf stars. By analyzing the spectrum of the white dwarf star G191-B2B, we derive a robust limit on the cosmological variation of the gravitational constant: G ˙ / G = (0.238 ± 2.959) × 10 - 15 yr - 1 . This limit proposes a potential test of the framework of modern unification theories.
- Subjects
GRAVITATIONAL constant; GRAVITATIONAL fields; WHITE dwarf stars; PHYSICAL constants; STELLAR spectra
- Publication
General Relativity & Gravitation, 2023, Vol 55, Issue 11, p1
- ISSN
0001-7701
- Publication type
Article
- DOI
10.1007/s10714-023-03173-w