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- Title
Cosmography of the Minimally Extended Varying Speed-of-Light Model.
- Authors
Lee, Seokcheon
- Abstract
Cosmography, as an integral branch of cosmology, strives to characterize the Universe without relying on pre-determined cosmological models. This model-independent approach utilizes Taylor series expansions around the current epoch, providing a direct correlation with cosmological observations and the potential to constrain theoretical models. Various observable quantities in cosmology can be described as different combinations of cosmographic parameters. Furthermore, one can apply cosmography to models with a varying speed of light. In this case, the Hubble parameter can be expressed by the same combination of cosmographic parameters for both the standard model and varying speed-of-light models. However, for the luminosity distance, the two models are represented by different combinations of cosmographic parameters. Hence, luminosity distance might provide a method to constrain the parameters in varying speed-of-light models.
- Subjects
COSMOGRAPHY; SPEED of light; TAYLOR'S series; LUMINOSITY distance; HUBBLE constant
- Publication
Astronomy (2674-0346), 2024, Vol 3, Issue 2, p100
- ISSN
2674-0346
- Publication type
Article
- DOI
10.3390/astronomy3020007