125 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National University of San MarcosPE16 papers
- Instituto Tecnológico de AeronáuticaBR11 papers
- Centro Brasileiro de Pesquisas FísicasBR6 papers
- Universidade Estadual Paulista (Unesp)BR6 papers
- Universidade Federal do Rio de JaneiroBR6 papers
- Universidade Federal do MaranhãoBR4 papers
- Valongo ObservatoryBR4 papers
- International Center for Relativistic AstrophysicsIT2 papers
- Sapienza University of RomeIT2 papers
- Universidade Estadual da Região Tocantina do MaranhãoBR2 papers
- Universidade Federal do ABCBR2 papers
- Universidade Federal do CaririBR2 papers
30 papers
Rotating strange dwarfs and their indistinguishability from white dwarfs
Edson Otoniel, José D. V. Arbañil, Geanderson A. Carvalho +1
We investigate the structure of strange dwarfs, modeled as hybrid compact stars composed of a self bound strange quark matter core surrounded by a white dwarf like crust, within a…
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…
Effects of light-mass fermionic dark matter on the equilibrium and stability of white dwarfs
G. A. Carvalho, J. D. V. Arbañil, J. G. Coelho
White dwarfs (WDs) can be used as laboratories to test strong gravity and high-density regimes, once their equation of state is not so uncertain as the one of neutron stars. This m…
Determining Exciton Binding Energy and Reduced Effective Mass in Metal Tri-Halide Perovskites from Optical and Impedance Spectroscopy Measurements
K. Lizárraga, J. A. Guerra, L. A. Enrique-Moran +5
Accurate determination of the exciton binding energy and reduced effective mass in halide perovskites is of utmost importance for the selective design of optoelectronic devices. Al…
Optical properties of TiS as a novel thin film for single-junction and tandem solar cells
Cesar E. P. Villegas, Enesio Marinho, A. C. Dias +2
Sub-micrometer thin films are promising platforms for emerging flexible photovoltaic devices. Although the current market already produces efficient solar cells, the average wafer…
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…
Charged scalar bosons in a Bonnor-Melvin- universe at conical approximation
Luis B. Castro, Angel E. Obispo, Andrés G. Jirón
The quantum dynamics of charged scalar bosons in a Bonnor-Melvin- universe is considered. In this study, the behavior of charged scalar bosons is explored within the framework o…
Multiplicity results for critical fractional Ambrosetti-Prodi type system with nonlinearities interacting with the spectrum
Eduardo. H. Caqui, Sandra M. de S. Lima, Fábio R. Pereira
We investigated the existence of solutions for a class of Ambrosetti-Prodi type systems involving the fractional Laplacian operator and with nonlinearities reaching critical growth…
On the electromagnetic interaction and the anomalous term in the Duffin-Kemmer-Petiau theory
Andrés G. Jirón, Luis B. Castro, Antonio S. de Castro +1
The problem of vectorial mesons embedded in an electromagnetic field via Duffin-Kemmer-Petiau (DKP) formalism is reinvestigated. Considering the electromagnetic interaction as a mi…
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 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…
Phase transition and stiffer core fluid in neutron stars: Effects on stellar configurations, dynamical stability, and tidal deformability
José D. V. Arbañil, Lucas S. Rodrigues, César H. Lenzi
In this work, we investigate the influence of the phase transition and a stiffer fluid in neutron stars' cores on the static equilibrium configuration, dynamical stability, and tid…
Charged quark stars in metric gravity
Juan M. Z. Pretel, José D. V. Arbañil, Sergio B. Duarte +2
We provide the modified TOV equations for the hydrostatic equilibrium of charged compact stars within the metric gravitational background. We adopt the MIT bag model EoS for…
Efficient hot carrier dynamics in near-infrared photocatalytic metals
Cesar E. P. Villegas, Marina S. Leite, Andrea Marini +1
Photoexcited metals can produce highly-energetic hot carriers whose controlled generation and extraction is a promising avenue for technological applications. While hot carrier dyn…
Tidal deformability and radial oscillations of anisotropic polytropic spheres
José D. V. Arbañil, Grigoris Panotopoulos
We compute the equilibrium, the fundamental eigenfrequency of oscillations modes, and quadrupolar tidal deformability of anisotropic polytropic spheres. These studies are respectiv…
The structure and stability of massive hot white dwarfs
Sílvia P. Nunes, José D. V. Arbañil, Manuel Malheiro
We investigate the structure and stability against radial oscillations, pycnonuclear reactions, and inverse -decay of hot white dwarfs. We regard that the fluid matter is made u…
Neutron stars in gravity with conserved energy-momentum tensor: Hydrostatic equilibrium and asteroseismology
Juan M. Z. Pretel, Sergio E. Jorás, Ribamar R. R. Reis +1
We investigate the equilibrium and radial stability of spherically symmetric relativistic stars, considering a polytropic equation of state (EoS), within the framework of …
Comparative analysis of the government plans of the Peruvian presidential candidates, SDO(UN) and State Policies of the National Agreement based on NLP
Honorio Apaza Alanoca, Josimar Chire, Jimy Oblitas
The analysis of government proposal during elections from political parties is vital to choose the next authorities in any city or country. In this paper, we use a text mining appr…
Radial oscillations and stability of compact stars in gravity
Juan M. Z. Pretel, Sergio E. Jorás, Ribamar R. R. Reis +1
We examine the static structure configurations and radial stability of compact stars within the context of gravity, with and standing for the Ricci scalar and tra…
Fluid pulsation modes from strange stars in a higher-dimensional space-time
José D. V. Arbañil, César H. Lenzi, Manuel Malheiro
In this work, we make the first step to derive non-radial pulsation equations in extra dimensions and investigate how the - and -mode frequencies of strange quark stars, wi…
Gravastar model in Randall-Sundrum braneworld
José D V Arbañil, Pedro H R S Moraes, Manuel Malheiro
In this work we derive a gravastar model in Randall-Sundrum II braneworld scenario. Gravastars (or gravitationally vacuum stars) were proposed by Mazur and Mottola as systems of gr…
Phase Transition and Electronic Structure Investigation of MoS-rGO Nanocomposite Decorated with AuNPs
Yunier Garcia-Basabe, Gabriela F. Peixoto, Daniel Grasseschi +5
In this work a simple approach to transform MoS from its metallic (1T' to semiconductor 2H) character via gold nanoparticle surface decoration of a MoS graphene oxide (rGO)…
Extra dimensions' influence on the equilibrium and radial stability of strange quark stars
José D. V. Arbañil, Geanderson A. Carvalho, Ronaldo V. Lobato +2
We analyze the influence of extra dimensions on the static equilibrium configurations and stability against radial perturbations. For this purpose, we solve stellar structure equat…