12 citations · 23 across the 6 of their papers we have counts for
6 papers
Investigating a Possible Variation of the Gravitational Constant Through Gas Mass Fraction Measurements and Type Ia Supernovae Observations
L. R. Colaço, R. F. L. Holanda, Marcelo Ferreira
In this paper, we investigate a possible time variation of the gravitational constant (G) using a non-parametric approach. Our main cosmological probe is the gas mass fraction of g…
Revisiting the Constancy of the Speed of Light: Galaxy Cluster Mass Bias Implications
R. F. L. Holanda, Marcelo Ferreira, Javier E. Gonzalez +1
In recent years, improvements in galaxy cluster observations have enabled a variety of tests of fundamental physics using these systems. In this work, we test the constancy of the…
An investigation of a varying G through Strong Lensing and SNe Ia observations
R. F. L. Holanda, M. Ferreira, Javier E. Gonzalez
In this paper, we analyze the potential variation of the gravitational constant using data from strong gravitational lensing systems and Type Ia supernovae. Testing para…
Non-parametric reconstruction of the fine structure constant with galaxy clusters
Marcelo Ferreira, Rodrigo F. L. Holanda, Javier E. Gonzalez +2
Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fi…
Unveiling the Hubble Constant through Galaxy Cluster Gas Mass Fractions
Javier E. Gonzalez, Marcelo Ferreira, Leorando R. Colaço +2
In this work, we obtain Hubble constant () estimates by using two galaxy cluster gas mass fraction measurement samples, Type Ia supernovae luminosity distances, and the validi…
A Hubble Constant Estimate from Galaxy Cluster and type Ia SNe Observations
L. R. Colaço, M. S. Ferreira, R. F. L. Holanda +2
In this work, we constrain the Hubble constant parameter, , using a combination of the Pantheon sample and galaxy clusters (GC) measurements from minimal cosmological assumpti…