62 citations · 257 across the 10 of their papers we have counts for
10 papers · 1 filter
Data Analysis and Phenomenological Cosmology
Alan A. Coley, Beethoven Santos, Viraj A A Sanghai
In the era of precision cosmology, even percentage level effects are significant on cosmological observables. The recent tension between the local and global values of is muc…
A Model-independent Test of Cosmic Isotropy with Low-z Pantheon Supernovae
Uendert Andrade, Carlos A. P. Bengaly, Beethoven Santos +1
The assumption of homogeneity and isotropy on large scales is one of the main hypotheses of the standard cosmological model. In this paper, we revisit a test of cosmological isotro…
Bayesian Comparison of Interacting Scenarios
Antonella Cid, Beethoven Santos, Cassio Pigozzo +2
We perform a Bayesian model selection analysis for different classes of phenomenological coupled scenarios of dark matter and dark energy with linear and non-linear interacting ter…
Isotropy of low redshift type Ia Supernovae: A Bayesian analysis
U. Andrade, C. A. P. Bengaly, J. S. Alcaniz +1
The standard cosmology strongly relies upon the Cosmological Principle, which consists on the hypotheses of large scale isotropy and homogeneity of the Universe. Testing these assu…
Testing averaged cosmology with type Ia supernovae and BAO data
B. Santos, A. A. Coley, N. Chandrachani Devi +1
An important problem in precision cosmology is the determination of the effects of averaging and backreaction on observational predictions, particularly in view of the wealth of ne…
Bayesian comparison of nonstandard cosmologies using type Ia supernovae and BAO data
B. Santos, N. Chandrachani Devi, J. S. Alcaniz
We use the most recent type Ia supernovae (SNe Ia) observations to perform a statistical comparison between the standard CDM model and its extensions [CDM and CDM] and…
Cosmology with Hu-Sawicki gravity in Palatini Formalism
B. Santos, M. Campista, J. Santos +1
Cosmological models based on f(R)-gravity may exhibit a natural acceleration mechanism without introducing a dark energy component. In this paper, we investigate cosmological conse…
Scalar field description of a parametric model of dark energy
E. M. Barboza, J. S. Alcaniz, B. Santos
We investigate theoretical and observational aspects of a time-dependent parameterization for the dark energy equation of state (EoS) , which is a well behaved function of th…
Cosmological Consequences of Exponential Gravity in Palatini Formalism
M. Campista, B. Santos, J. Santos +1
We investigate cosmological consequences of a class of exponential gravity in the Palatini formalism. By using the current largest type Ia Supernova sample along with determ…
Current constraints on the epoch of cosmic acceleration
B. Santos, J. C. Carvalho, J. S. Alcaniz
The cosmographic expansion history of the universe is investigated by using the 557 type Ia supernovae from the Union2 Compilation set along with the current estimates involving th…