454 citations · 5.4k across the 78 of their papers we have counts for
12 papers · 1 filter
Measurements of and reconstruction of the dark energy properties from a model-independent joint analysis
Alexander Bonilla, Suresh Kumar, Rafael C. Nunes
Gaussian processes (GP) provide an elegant and model-independent method for extracting cosmological information from the observational data. In this work, we employ GP to perform a…
Cosmology Intertwined IV: The Age of the Universe and its Curvature
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +88
A precise measurement of the curvature of the Universe is of primeval importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in…
Cosmology Intertwined III: and
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +89
The standard Cold Dark Matter cosmological model provides a wonderful fit to current cosmological data, but a few tensions and anomalies became statistically significant with t…
Cosmology Intertwined I: Perspectives for the Next Decade
Eleonora Di Valentino, Luis A. Anchordoqui, Ozgur Akarsu +89
The standard Cold Dark Matter cosmological model provides an amazing description of a wide range of astrophysical and astronomical data. However, there are a few big open quest…
Weighing massive neutron star with screening gravity: A look on PSR J0740+6620 and GW190814 secondary component
Rafael C. Nunes, Jaziel G. Coelho, José C. N. de Araujo
Neutron stars (NSs) are excellent natural laboratories to constrain gravity on strong field regime and nuclear matter in extreme conditions. Motivated by the recent discovery of a…
BAO signatures in the 2-point angular correlations and the Hubble tension
Rafael C. Nunes, Armando Bernui
An observational tension on estimates of the Hubble parameter, , using early and late Universe information, is being of intense discussion in the literature. Additionally, it…
Searching for modified gravity in the astrophysical gravitational wave background: Application to ground-based interferometers
Rafael C. Nunes
We investigate how the propagation of an astrophysical gravitational wave background (AGWB) is modified over cosmological volumes when considering theories beyond general relativit…
Effects of the Hubble Parameter on the Cosmic Growth of the First Quasars
Rafael C. Nunes, Fabio Pacucci
Supermassive black holes (SMBHs) play a crucial role in the evolution of galaxies and are currently detected up to . Theories describing black hole (BH) growth are chall…
Rastall gravity extension of the standard CDM model: theoretical features and observational constraints
Ozgur Akarsu, Nihan Katirci, Suresh Kumar +3
We present a detailed investigation of the Rastall gravity extension of the standard CDM model. We review the model for two simultaneous modifications of different nature in the…
Cosmological parameter analyses using transversal BAO data
Rafael C. Nunes, Santosh K. Yadav, J. F. Jesus +1
We investigate observational constraints on cosmological parameters combining 15 measurements of the transversal BAO scale (obtained free of any fiducial cosmology) with Planck-CMB…
Measurements of in modified gravity theories: The role of lensed quasars in the late-time Universe
Rocco D'Agostino, Rafael C. Nunes
In this work, we obtain measurements of the Hubble constant in the context of modified gravity theories. We set up our theoretical framework by considering viable cosmological $f(R…
All-inclusive interacting dark sector cosmologies
Weiqiang Yang, Eleonora Di Valentino, Olga Mena +2
In this paper we explore possible extensions of Interacting Dark Energy cosmologies, where Dark Energy and Dark Matter interact non-gravitationally with one another. In particular,…