20 citations · 32 across the 12 of their papers we have counts for
13 papers
Anisotropic Dark Matter Stars with a Pressure-Sourced Dark Energy Density
Qazi Abdul Ghafoor, Ilídio Lopes\
If the dark sector is not inert, the vacuum energy trapped inside a dark matter star need not equal its cosmological value, but may instead respond to the star's own density and pr…
Intrinsic pressure anisotropy in spherical Proca stars
Ilídio Lopes
Pressure anisotropy in relativistic stars is commonly prescribed through a phenomenological closure, obscuring its microscopic origin and relation to stress-energy conservation. He…
Screened Scalar Hair and the Weak-Lensing Separation of Black Holes from Neutron Stars in Quadratic Gravity
Yashmitha Kumaran, Ilídio Lopes
Quadratic gravity carries a massive scalar degree of freedom, the scalaron, whose finite range screens its influence on the geometry outside a compact object. We show th…
Weak gravitational lensing by a dark-matter-admixed neutron star: a self-consistent two-fluid halo and the Gauss--Bonnet deflection angle
Yashmitha Kumaran, Ilídio Lopes
We compute the weak gravitational deflection of light by a neutron star that carries a self-consistent dark-matter component, in the regime in which the dark matter forms an "exten…
Slowly rotating condensate dark stars beyond the mean-field approximation
Grigoris Panotopoulos, Ángel Rincón, Ilidio Lopes
We investigate rotational properties and universal relations of slowly rotating Bose-Einstein condensate dark stars in the context of General Relativity, both at the mean-field lev…
Radial oscillations of quark stars in light of current astrophysical constraints: A comparative study
G. Panotopoulos, A. Rincon, I. Lopes
We investigate the structural and oscillatory properties of isotropic strange quark stars within General Relativity, focusing on three physically motivated equations of state: the…
Rotational Behaviour of Exotic Compact Objects
Zakary Buras-Stubbs, Ilídio Lopes
We construct exotic compact objects composed entirely of self-interacting asymmetric fermionic dark matter governed by a repulsive Yukawa potential with massive dark interaction bo…
Stellar modeling within regularized 4D Einstein-Gauss-Bonnet gravity in light of current astrophysical constraints
G. Panotopoulos, Á. Rincón, I. Lopes
In this study we obtain interior solutions and investigate structural properties of isotropic compact stars in the framework of four-dimensional regularized Einstein-Gauss-Bonnet (…
Exploring the Structural Properties of Anisotropic Dark Matter-Admixed Quark Stars
G. Panotopoulos, A. Rincón, I. Lopes
We investigate anisotropic compact stars comprising two non-interacting fluids: quark matter and condensed dark matter. Using the MIT Bag model equation of state for quark matter a…
Screening Mechanisms on White Dwarfs: Symmetron & Dilaton
Joan Bachs-Esteban, Ilídio Lopes, Javier Rubio
This work provides the first comparison of the symmetron and dilaton fields in white dwarfs. We show how these screening mechanisms behave inside {such stars} and their impact on s…
Constraints on the Axion-Photon Coupling Using Stellar Modelling
David Fordham, Ilídio Lopes
Asteroseismology has been shown to be, together with stellar modelling, an invaluable tool in constraining properties of novel physics. In this work, we study for the first time th…
Bosonic dark matter dynamics in hybrid neutron stars
Zakary Buras-Stubbs, Ilídio Lopes
This research studies the intricate interplay between dark and baryonic matter within hybrid neutron stars enriched by anisotropic bosonic dark matter halos. Our modelling, guided…
Linking solar bosonic dark matter halos and active neutrinos
Ilídio Lopes
Our study investigates the complex interaction between active neutrinos and the ultralight bosonic dark matter halo surrounding the Sun. This halo extends over several solar radii…