72 citations · 653 across the 35 of their papers we have counts for
36 papers
Structure and astrophysical properties of dark energy admixed neutron stars
Juan M. Z. Pretel, Sergio B. Duarte, Mariana Dutra +1
The presence of a dark energy (DE) core, made of a Chaplygin dark fluid, is capable of influencing the diverse observable properties of neutron stars (NSs). However, there is also…
Bayesian constraints on quadratic gravity from the ADM mass of white dwarfs
Edson Otoniel, Lucas A. Souza, Jonathan A. Rebouças +1
We calculate static equilibrium sequences for white dwarfs (WDs) in quadratic symmetric teleparallel gravity, f(Q)=Q+alpha Q^2, and perform a Bayesian comparison between the negati…
Nucleon spectra and wave functions from holographic models with dual Einstein-dilaton and Starobinsky-dilaton gravities
Adão S. da Silva Junior, Juan M. Z. Pretel, Henrique Boschi-Filho
We study the nucleon spectra in two holographic set-ups: Einstein-dilaton and Starobinsky-dilaton gravity models. The Einstein-dilaton holographic model, also known as improved hol…
Magnetic pressure anisotropy in ultra-dense white dwarfs: Landau quantization and neutronization effects
Edson Otoniel, Juan M. Z. Pretel, Victor B. T. Alves +2
Strong magnetic fields modify the thermodynamics of white dwarf (WD) matter by quantizing the transverse motion of degenerate electrons into Landau levels and splitting the pressur…
Dark energy stars from the modified Chaplygin gas: universal relations
Krishna Pada Das, Juan M. Z. Pretel
Dark energy stars (DESs), described by the modified Chaplygin gas (MCG), can be dynamically stable and fall within different observational measurements. In this work, we employ div…
Dark Matter in White Dwarfs: Implications for Their Structure
Sílvia P. Nunes, José D. V. Arbañil, Juan M. Z. Pretel +1
White Dwarfs (WDs), the final evolutionary stage of most stars, are frequently modeled considering only a dense plasma matter. However, their potential interaction with dark matter…
Examining the influence of anisotropy on the fundamental mode of nonradial oscillation in neutron stars on a complete general relativistic scheme
José D. V. Arbañil, Gabriel O. Cavalheiro, Victor B. T. Alves +3
The anisotropic influence on the -mode frequency of oscillations and dimensionless tidal deformability of neutron stars is analyzed by employing the nonradial oscillation equati…
White dwarf structure in gravity: beyond the Chandrasekhar mass limit
Edson Otoniel, Juan M. Z. Pretel, Clésio E. Mota +3
In this work, we investigate the relativistic structure of white dwarfs (WDs) within the framework of modified gravity theory , which introduces a non-mi…
Self-bound hybrid stars with strong phase transitions can relieve major compact star observation tensions
Chen Zhang, Juan M. Z. Pretel, Renxin Xu
Some recent pulsar observations cannot naturally fit into the conventional picture of neutron stars: the compact objects associated with HESS J1731-347 and XTE J1814-338 have too s…
White dwarfs in regularized 4D Einstein-Gauss-Bonnet gravity
Juan M. Z. Pretel, Takol Tangphati, İzzet Sakallı +1
White dwarfs (WDs), as the remnants of low to intermediate-mass stars, provide a unique opportunity to explore the interplay between quantum mechanical degeneracy pressure and grav…
Vector mesons from a holographic QCD model in -dilaton gravity
Adão S. da Silva Junior, Juan M. Z. Pretel
In this paper we investigate the spectrum and decay constants of vector mesons based on -dilaton gravity. We focus particularly on the well-known Starobinsky model, given by…
Neutron stars with a dark-energy core from the Chaplygin gas
Juan M. Z. Pretel, Mariana Dutra, Sergio B. Duarte
We analyze the effect of a Chaplygin dark fluid (CDF) core on neutron stars (NSs). To address this study, we focus on the relativistic structure of stellar configurations composed…
Dark energy effects on realistic neutron stars
Juan M. Z. Pretel, Sergio B. Duarte, José D. V. Arbañil +2
By considering realistic equations of state (EoSs) to describe the ordinary matter of the stellar crust, in this study, we explore the effect of a dark energy core, made of Chaplyg…
Moment of inertia and compactness of quark stars within the context of gravity
Juan M. Z. Pretel
Within the metric formalism of gravity theories, we investigate the hydrostatic equilibrium structure of compact stars taking into account both isotropic and anisotrop…
Gravitational wave seismology of charged strange stars in the Cowling approximation: the fluid pulsation modes
José D. V. Arbañil, César H. Lenzi, Juan M. Z. Pretel +1
In this work we study, within the framework of Cowling approximation, the effect of the electric charge on the gravitational wave frequency of fluid oscillation modes of strange qu…
Compact stars in Rastall gravity: hydrostatic equilibrium and radial pulsations
Juan M. Z. Pretel, Clésio E. Mota
Within the context of Rastall gravity, we investigate the hydrostatic equilibrium and dynamical stability against radial pulsations of compact stars, where a free parameter mea…
Neutron stars in gravity
Clésio E. Mota, Juan M. Z. Pretel, César O. V. Flores
This study explores the behavior of compact stars within the framework of gravity, focusing on the functional form . The modified Tolman-Oppenh…
Normal oscillation modes and radial stability of neutron stars with a dark-energy core from the Chaplygin gas
Juan M. Z. Pretel, Mariana Dutra, Sergio B. Duarte
As a potential candidate for the late-time accelerating expansion of the Universe, the Chaplygin gas and its generalized models have significant implications to modern cosmology. I…
Universal relations for anisotropic interacting quark stars
Juan M. Z. Pretel, Chen Zhang
Interacting quark stars, which are entirely composed of interacting quark matter including perturbative QCD corrections and color superconductivity, can meet constraints from vario…
Effects of anisotropic pressure on interacting quark star structure
Juan M. Z. Pretel, Takol Tangphati, Ayan Banerjee +1
Perturbative Quantum Chromodynamics (pQCD) corrections and color superconductivity predict that strongly interacting matter can reveal new physical phenomena under extreme conditio…
Relativistic structure of charged quark stars in energy-momentum squared gravity
Juan M. Z. Pretel, Takol Tangphati, Ayan Banerjee
Within the context of energy-momentum squared gravity (EMSG), where non-linear matter contributions appear in the gravitational action, we derive the modified TOV equations describ…
Compact stars in scalar-tensor theories with a single-well potential and the corresponding theory
Juan M. Z. Pretel, Sergio E. Jorás, Ribamar R. R. Reis +2
The macroscopic properties of compact stars in modified gravity theories can be significantly different from the general relativistic (GR) predictions. Within the gravitational con…
Fluid pulsation modes and tidal deformability of anisotropic strange stars in light of the GW event
José D. V. Arbañil, Cesar V. Flores, César H. Lenzi +1
The effects of the anisotropy on the fluid pulsation modes adopting the so-called Cowling approximation and tidal deformability of strange quark stars are investigated by using the…
Radial pulsations, moment of inertia and tidal deformability of dark energy stars
Juan M. Z. Pretel
We construct dark energy stars with Chaplygin-type equation of state (EoS) in the presence of anisotropic pressure within the framework of Einstein gravity. From the classification…