125 citations · 145 across the 19 of their papers we have counts for
9 papers · 1 filter
Teleparallel torsion and white dwarf structure in \(f(T)=T+ΞT^2\) gravity
Edson Otoniel, Jonathan A. Reboucas, Iarley P. Lobo
We investigate how quadratic torsion modifies the equilibrium structure of white dwarfs in covariant gravity. Static spherical configurations are calculated with a fi…
Modified electron dispersion relations in degenerate white dwarfs
Edson Otoniel, Iarley P. Lobo
We investigate how modified electron dispersion relations affect the structure of cold white dwarfs (WDs). The deformation is introduced only in the degenerate electron equation of…
White Dwarf Stellar Structure from Effective Polymer Geometry in Loop Quantum Gravity
Edson Otoniel, Jonathan A. Rebouças, M. C. Araújo +1
We construct an effective Tolman Oppenheimer Volkoff system for cold carbon white dwarfs using the areal radius form of a polymer metric sector motivated by loop quantum gravity. T…
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…
Localized magnetic pressure anisotropy in strange dwarfs with crystalline crusts
Mila Leite Garcia Reis, Daniela Eller Uliana, Jaziel G. Coelho +1
We study equilibrium sequences of magnetized strange dwarfs composed of a self bound MIT bag strange matter core, with \(B_{\rm bag}^{1/4}=145\,{\rm MeV}\), and an ordinary crystal…
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…
Prospects for the Observation of Continuous Gravitational Waves from Deformed Fast-spinning White Dwarfs
M. F. Sousa, E. Otoniel, J. G. Coelho +1
There has been a growing interest within the astrophysics community in highly magnetized and fast-spinning white dwarfs (WDs), commonly referred to as HMWDs. WDs with these charact…
Mass limits of the extremely fast-spinning white dwarf CTCV J2056-3014
Edson Otoniel, Jaziel G. Coelho, Sílvia P. Nunes +2
CTCV J2056--3014 is a nearby cataclysmic variable with an orbital period of approximately hours at a distance of about light-years from the Earth. Its recently reporte…
Very Magnetized White Dwarfs with Axisymmetric Magnetic Field and the Importance of the Electron Capture and Pycnonuclear Fusion Reactions for their Stability
Edson Otoniel, Bruno Franzon, Manuel Malheiro +2
In this work, we study the properties of magnetized white dwarfs taking into account possible instabilities due to electron capture and pycnonuclear fusion reactions in the cores o…