40 citations · 165 across the 10 of their papers we have counts for
10 papers
The Hubble constant from galaxy cluster scaling-relation and SNe Ia observations: a consistency test
Kamal Bora, R. F. L. Holanda
In this paper, we propose a self-consistent test for a Hubble constant estimate using galaxy cluster and type Ia supernovae (SNe Ia) observations. The approach consists, in a first…
A search for the variation of speed of light using galaxy cluster gas mass fraction measurements
I. E. C. R. Mendonça, Kamal Bora, R. F. L. Holanda +2
In this paper, we implement a new method to test the invariance of the speed of light () as a function of redshift, by combining the measurements of galaxy cluster gas mass frac…
Probing the time variation of fine structure constant using galaxy clusters and quintessence model
Zhi-E Liu, Wen-Fei Liu, Tong-Jie Zhang +2
We explore a possible time variation of the fine structure constant () using the Sunyaev-Zel'dovich effect measurements of galaxy clusters along with their X-r…
Galaxy clusters, cosmic chronometers and the Einstein equivalence principle
I. E. C. R. Mendonça, Kamal Bora, R. F. L. Holanda +1
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…
A test of the standard dark matter density evolution law using galaxy clusters and cosmic chronometers
Kamal Bora, R. F. L. Holanda, Shantanu Desai +1
In this letter, we implement a test of the standard law for the dark matter density evolution. For this purpose, only a flat universe and the validity of the FRW metric are assumed…
A test of the evolution of gas depletion factor in galaxy clusters using strong gravitational lensing systems
R. F. L. Holanda, Kamal Bora, Shantanu Desai
In this letter, we discuss a new method to probe the redshift evolution of the gas depletion factor, i.e. the ratio by which the gas mass fraction of galaxy clusters is depleted wi…
Probing the dark matter density evolution law with large scale structures
Kamal Bora, R. F. L. Holanda, Shantanu Desai
We propose a new method to explore a possible departure from the standard time evolution law for the dark matter density. We looked for a violation of this law by using a deformed…
A test of cosmic distance duality relation using SPT-SZ galaxy clusters, Type Ia supernovae, and cosmic chronometers
Kamal Bora, Shantanu Desai
We carry out a test of the cosmic distance duality relation using a sample of 52 SPT-SZ clusters, along with X-ray measurements from XMM-Newton. To carry out this test, we need an…
A model-independent test of the evolution of gas depletion factor for SPT-SZ and Planck ESZ clusters
Kamal Bora, Shantanu Desai
The gas mass fraction in galaxy clusters has been widely used to determine cosmological parameters. This method assumes that the ratio of the cluster gas mass fraction to the cosmi…
Constraints on variation of fine structure constant from joint SPT-SZ and XMM-Newton observations
Kamal Bora, Shantanu Desai
We search for a variation of the electromagnetic fine structure constant () using a sample of 58 SZ selected clusters in the redshift range () detec…