130 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal de Minas GeraisBR58 papers
- Universidade Federal de Santa CatarinaBR17 papers
- Universidade Federal do Rio de JaneiroBR15 papers
- Laboratório Nacional de AstrofísicaBR13 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR10 papers
- Universidade Federal dos Vales do Jequitinhonha e MucuriBR10 papers
- Universidade Federal de LavrasBR9 papers
- University of La SerenaCL8 papers
- Argentine National ObservatoryAR7 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Universidade de São PauloBR7 papers
- Universidade Federal da ParaíbaBR7 papers
135 papers
An Undergraduate Approach to the Quantum Hadrodynamics and the Physics of Neutron Stars Part II: Neutron Stars' Exotic Content
Luiz L. Lopes
In this second part, I discuss how to introduce and the role played by non-atomic degrees of freedom in neutron stars' core using the formalism developed in Part I.
Pre-main Sequence B Stars Surrounding the Orion Nebula
P. H. F. B. Braz, A. Roman-Lopes, W. J. B. Corradi +6
Pre-main sequence (PMS) early-type stars are rare due to their rapid evolution. Confirming PMS B stars is accordingly valuable for constraining higher mass star formation scenarios…
Effects of the symmetry energy slope on magnetized neutron stars
Luiz L. Lopes, Cesar V. Flores, Débora P. Menezes
In this work, we study the effect of the symmetry slope on the observables of weakly and strongly magnetized neutron stars within the chaotic magnetic field approximation. We inves…
An Undergraduate Approach to the Quantum Hadrodynamics and the Physics of Neutron Stars
Luiz L. Lopes
In this tutorial, I discuss how to model a neutron star from the Quantum Hadrodynamics microscopic approach. After a brief discussion about hydrostatic equilibrium, I discuss the r…
Percolation of random compact diamond-shaped systems on the square lattice
Charles S. do Amaral, Mateus G. Soares, Robert M. Ziff
We study site percolation on a square lattice with random compact diamond-shaped neighborhoods. Each site is connected to others within a neighborhood in the shape of a diamond…
Baryon and Pseudoscalar Meson Octets within a Unified broken SU(6) symmetry
Luiz L. Lopes
In this work, I discuss neutron stars with hyperons and anti-kaon condensate. To fix their coupling constants with the vector mesons of the Quantum Hadrodynamics, I use a unified s…
Open cluster age calibration from colour-magnitude morphological indices using Gaia DR3 data
F. A. Ferreira, J. F. C. Santos, W. J. B. Corradi +2
Star clusters are crucial for understanding how stars evolve. Their colour-magnitude diagrams show the effects of stellar evolution of approximately coeval objects with the same ch…
New routes for PN destruction and formation in the ISM via neutral-neutral gas-phase reactions and an extended database for reactions involving phosphorus
Mateus X. Silva, Edgar Mendoza, Fábio S. L. Ferreira +5
Phosphorus plays an essential role in the chemistry of living organisms, being present in several fundamental biomolecules. The investigation of chemical reactions taking place in…
Macroscopic properties of the XTE J1814-338 as a dark matter admixed strange star
Luiz L. Lopes
In this letter, I discuss the macroscopic properties of the ultracompact object XTE J1814-338, whose inferred mass and radius read = 1.21 0.05 and R = 7.0 …
The Controlled Four-Parameter Method for Cross-Assignment of Directional Wave Systems
Andre Luiz Cordeiro dos Santos, Felipe Marques dos Santos, Nelson Violante-Carvalho +2
Cross-assignment of directional wave spectra is a critical task in wave data assimilation. Traditionally, most methods rely on two-parameter spectral distances or energy ranking ap…
Oscillatory properties of strange quark stars described by the vector MIT bag model
Luiz L. Lopes, Jose C. Jimenez, Luis B. Castro +1
We investigated the radial and non-radial fundamental () mode oscillations of self-bound (quark) stars obtained after employing the Vector MIT (vMIT) bag model. Within this mode…
XTE J1814-338 as a dark matter admixed neutron star
Luiz L. Lopes, Adamu Issifu
The existence of the ultracompact object XTE J1814-338, with an inferred mass and radius of = 1.21 0.05 and R = 7.0 0.4 km, presents a great challenge for…
Role of the symmetry energy slope in neutron stars: exploring the model-dependency
Luiz L. Lopes
Using six different parametrizations of the quantum hadrodynamics (one of which is original), I study how different values of the symmetry energy slope ( affect some microscopi…
Low temperature formation of pyridine and (iso)quinoline via neutral neutral reactions
Zhenghai Yang, Chao He, Shane J. Goettl +9
Aromatic molecules represent fundamental building blocks in prebiotic chemistry and are contemplated as vital precursors to DNA and RNA nitrogen bases. However, despite the identif…
Role of local anisotropy in hybrid stars
Luiz L. Lopes, H. C. Das
Using the Bower-Liang model, we discuss how pressure anisotropies affect the microscopic and macroscopic properties of hybrid stars. We find that anisotropies affect the maximum ma…
New SiS destruction and formation routes via neutral-neutral reactions and their fundamental role in interstellar clouds at low and high metallicity values
Edgar Mendoza, Samuel F. M. Costa, Miguel Carvajal +3
Among the silicon bearing species discovered in the interstellar medium, SiS and SiO stand out as key tracers due to their distinct chemistry and abundances in interstellar and cir…
Decoding rotating neutron stars: Role of the symmetry energy slope
Luiz L. Lopes
In December 2023, the Fermi LAT Catalog announced the discovery of 33 new millisecond pulsars. Motivated by that, in this work, I study how different values of the symmetry energy…
Three-state active lattice gas: a discrete Vicseklike model with excluded volume
Tiago Venzel Rosembach, Ana Luiza Novaes Dias, Ronald Dickman
We study a discrete-space model of active matter with excluded volume. Particles are restricted to the sites of a triangular lattice, and can assume one of three orientations. Vary…
Spherically symmetric anisotropic strange stars
Luiz L. Lopes, H. C. Das
In this work, we made an extensive study about the possible presence of anisotropies in strange stars. To accomplish this task, we use three different configurations for the strang…
Correlation between the symmetry energy slope and the deconfinement phase transition
Luiz L. Lopes, Debora P. Menezes, Mateus R. Pelicer
We study how the nuclear symmetry energy slope () can affect the hadron-quark phase transition and neutron star properties. We show that the main physical quantities as the crit…
A Bayesian study of quark models in view of recent astrophysical constraints
Franciele M. da Silva, Adamu Issifu, Luiz L. Lopes +2
In this work, we perform a comparative analysis between the density-dependent quark model and the vector MIT bag model using Bayesian analysis. We use the equations of state genera…
Analysis of the dynamics of a spacecraft in the vicinity of an asteroid binary system with equal masses
L. B. T. Santos, P. A. Sousa-Silva, M. O. Terra +8
In this work, we performed a dynamical analysis of a spacecraft around a nearly equal-mass binary near-Earth asteroid with application to the asteroid 2017 YE5, which is also a pos…
One-dimensional random sequential adsorption with one deposition per site
Charles S. do Amaral, Diogo C. dos Santos
We investigate a modified version of the random sequential adsorption model. Specifically, this model involves the deposition of two distinct types of particles onto a lattice…
The VISCACHA survey -- VII. Assembly history of the Magellanic Bridge and SMC Wing from star clusters
R. A. P. Oliveira, F. F. S. Maia, B. Barbuy +15
The formation scenario of the Magellanic Bridge during an encounter between the Large and Small Magellanic Clouds Myr ago, as proposed by -body models, would be impri…