380 citations · 1.7k across the 23 of their papers we have counts for
23 papers
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
VSL-Gravity in light of PSR B1913+16 Full Data Set: Upper limits on graviton mass and its theoretical consequences
Alexander Bonilla, Alessandro Santoni, Rafael C. Nunes +1
Very Special Linear Gravity (VSL-Gravity) is an alternative model of linearized gravity that incorporates massive gravitons while retaining only two physical degrees of freedom tha…
Exploring new physics in the late Universe's expansion through non-parametric inference
Miguel A. Sabogal, Özgür Akarsu, Alexander Bonilla +2
In this study, we investigate deviations from the Planck-CDM model in the late universe () using the Gaussian Processes method, with minimal assumptions. Our goa…
Reconstructing the growth index with Gaussian Processes
Fernanda Oliveira, Felipe Avila, Armando Bernui +2
Alternative cosmological models have been proposed to alleviate the tensions reported in the concordance cosmological model, or to explain the current accelerated phase of the univ…
The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background
Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +111
The NANOGrav 15-year data set shows evidence for the presence of a low-frequency gravitational-wave background (GWB). While many physical processes can source such low-frequency gr…
Report of the Topical Group on Cosmic Probes of Fundamental Physics for for Snowmass 2021
Rana X. Adhikari, Luis A. Anchordoqui, Ke Fang +118
Cosmic Probes of Fundamental Physics take two primary forms: Very high energy particles (cosmic rays, neutrinos, and gamma rays) and gravitational waves. Already today, these probe…
Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
Elcio Abdalla, Guillermo Franco Abellán, Amin Aboubrahim +200
In this paper we will list a few important goals that need to be addressed in the next decade, also taking into account the current discordances between the different cosmological…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Inferring and with cosmic growth rate measurements using machine learning
Felipe Avila, Armando Bernui, Alexander Bonilla +1
Measurements of the cosmological parameter provided by cosmic microwave background and large scale structure data reveal some tension between them, suggesting that the cluste…
Reconstruction of the dark sectors' interaction: A model-independent inference and forecast from GW standard sirens
Alexander Bonilla, Suresh Kumar, Rafael C. Nunes +1
Interacting dark matter (DM) - dark energy (DE) models have been intensively investigated in the literature for their ability to fit various data sets as well as to explain some ob…
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…
Forecasts on the speed of gravitational waves at high
Alexander Bonilla, Rocco D'Agostino, Rafael C. Nunes +1
The observation of GW170817 binary neutron star (BNS) merger event has imposed strong bounds on the speed of gravitational waves (GWs) locally, inferring that the speed of GWs prop…
Forecast on lepton asymmetry from future CMB experiments
Alexander Bonilla, Rafael C. Nunes, Everton M. C. Abreu
We consider a cosmological lepton asymmetry in the form of neutrinos and impose new expected sensitivities on such asymmetry through the degeneracy parameter () by using some…
Tsallis' entropy, modified Newtonian accelerations and the Tully-Fisher relation
Everton M. C. Abreu, Jorge Ananias Neto, Albert C. R. Mendes +1
In this paper we have shown that the connection between the number of bits and the area of the holographic screen, where both were established in Verlinde's theory of entropic grav…
Probing the properties of relic neutrinos using the cosmic microwave background, the Hubble Space Telescope and galaxy clusters
Rafael C. Nunes, Alexander Bonilla
We investigate the observational constraints on the cosmic neutrino background (CNB) given by the extended CDM scenario (CDM $+ N_{\rm eff} + \sum m_ν + c^2_{\rm eff} + c^2_{…
Accelerated cosmos in a non-extensive setup
H. Moradpour, Alexander Bonilla, Everton M. C. Abreu +1
Here, we consider a flat FRW universe whose its horizon entropy meets the Rényi entropy of non-extensive systems. In our model, the ordinary energy-momentum conservation law is not…
Constraints On Dark Energy Models From Galaxy Clusters and Gravitational Lensing Data
Alexander Bonilla, Jairo E. Castillo
The Sunyaev--Zel'dovich (SZ) effect is a global distortion of the Cosmic Microwave Background (CMB) spectrum as a result of its interaction with a hot electron plasma in the intrac…
Tsallis and Kaniadakis statistics from a point of view of the holographic equipartition law
Everton M. C. Abreu, Jorge Ananias Neto, Albert C. R. Mendes +1
In this work, we have illustrated the difference between both Tsallis and Kaniadakis entropies through cosmological models obtained from the formalism proposed by Padmanabhan, whic…
Holographic Dark Energy from Fluid/Gravity Duality Constraint by Cosmological Observations
Behnam Pourhassan, Alexander Bonilla, Mir Faizal +1
In this paper, we obtain a holographic model of dark energy using the fluid/gravity duality. This model will be dual to a higher dimensional Schwarzschild black hole, and we would…
Observational Constraints on gravity from varying fundamental constants
Rafael C. Nunes, Alexander Bonilla, Supriya Pan +1
We use observations related to the variation of fundamental constants, in order to impose constraints on the viable and most used gravity models. In particular, for the fine…
Observación de lentes gravitatorias con ALMA
A. Bonilla, O. Toloza, I. Fuentes +1
Gravitational lensing is a fundamental tool for cosmology. A recent instrument which will provide more information for models of these objects is ALMA. Our goal is to select lens c…
Constraints on Holographic cosmologies from strong lensing systems
Victor H. Cardenas, Alexander Bonilla, Veronica Motta +1
We use strongly gravitationally lensed (SGL) systems to put additional constraints on a set of holographic dark energy models. Data available in the literature (redshift and veloci…
Cosmic slowing down of acceleration using
Victor H. Cardenas, Carla Bernal, Alexander Bonilla
We investigate the recent - low redshift - expansion history of the universe using the most recent observational data. Using only data from 42 measurements of in clusters…