Abstract
A varying gravitational constant G could affect the interpretation of the recent high-redshift Type Ia Supernovae results. If the local value of G at the space-time location of distant supernovae is different, it would change both the thermonuclear energy release and the time scale of the supernova outburst. In both cases the effect is related to a change in the Chandrasekhar mass MCh ∝ G - 3/2. In addition the integrated variation of G with time would also affect cosmic evolution and therefore the luminosity distance relation. Here we investigate in a consistent way how these different effects of a varying G could change the current interpretation of the Hubble diagram of Type la supernovae and use the results to set upper bounds on an hypothetical variation of G.
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García-Berro, E., Gaztañaga, E., Isern, J., Benvenuto, O., Althaus, L. (2002). On the Evolution of Cosmological Type IA Supernovae and the Gravitational Constant. In: Chávez, M., Bressan, A., Buzzoni, A., Mayya, D. (eds) New Quests in Stellar Astrophysics: The Link Between Stars and Cosmology. Astrophysics and Space Science Library, vol 274. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0393-3_43
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DOI: https://doi.org/10.1007/978-94-010-0393-3_43
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