# Galaxy clusters, cosmic chronometers and the Einstein equivalence principle

@article{Mendona2021GalaxyCC, title={Galaxy clusters, cosmic chronometers and the Einstein equivalence principle}, author={I.E.C.R. Mendonça and K. Bora and R. F. L. Holanda and Shantanu Desai}, journal={Journal of Cosmology and Astroparticle Physics}, year={2021}, volume={2021} }

The Einstein equivalence principle in the electromagnetic sector can be violated in modifications of gravity theory generated by a multiplicative coupling of a scalar field to the electromagnetic Lagrangian. In such theories, deviations of the standard result for the cosmic distance duality relation, and a variation of the fine structure constant are expected and are unequivocally intertwined. In this paper, we search for these possible cosmological signatures by using galaxy cluster gas mass…

## One Citation

A search for the variation of speed of light using galaxy cluster gas mass fraction measurements

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2021

In this paper, we implement a new method to test the invariance of the speed of light (c) as a function of redshift, by combining the measurements of galaxy cluster gas mass fraction, H(z) from…

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