activity
20182026
most citedNeutron stars meet constraints from high and low energy nuclear physics

12 citations · 27 across the 8 of their papers we have counts for

collaborators

7 papers

astro-ph.HE2026

General-relativistic structure of two-component quantum dark fermion stars

Ilídio Lopes

We develop a general-relativistic framework for two-component quantum dark fermion stars: equilibrium configurations of two degenerate fermion species governed by gravity, a Yukawa…

hep-th2026★ 1 cited

Self-gravitating quantum stars with a globally relevant Bohm potential

Ilidio Lopes

The microphysics underlying non-baryonic dark matter remains unknown. I derive the two-species Schrödinger-Poisson-Yukawa system for spin-1/2 dark-sector fermion fields, (mass…

nucl-th2025★ 2 cited

Rapidly Spinning Massive Pulsars as an Indicator of Quark Deconfinement

Christoph Gärtlein, Violetta Sagun, Oleksii Ivanytskyi +2

We study rotating hybrid stars, with particular emphasis on the effect of spin on the deconfinement phase transition and star properties. Our analysis is based on a hybrid equation…

nucl-th2025

Color-superconducting quarkyonic matter

Christoph Gärtlein, Oleksii Ivanytskyi, Violetta Sagun +1

We explore the role of color superconductivity in quarkyonic matter under the conditions of color and electric neutrality at - and strong equilibrium, as relevant for neutron st…

nucl-th2024

Radial Oscillations in Hybrid Stars with Slow Quark Phase Transition

Ishfaq Ahmad Rather, Kauan D. Marquez, Betânia C. Backes +2

This study investigates the radial oscillations of hybrid neutron stars, characterized by a composition of hadronic external layers and a quark matter core. Utilizing a density-dep…

astro-ph.HE2021

Constraints on the fermionic dark matter from observations of neutron stars

V. Sagun, E. Giangrandi, O. Ivanytskyi +2

We study an impact of asymmetric fermionic dark matter on neutron star properties, including tidal deformability, mass, radius, etc. We present the conditions at which dark matter…

astro-ph.HE2018★ 12 cited

Neutron stars meet constraints from high and low energy nuclear physics

V. Sagun, I. Lopes, A. Ivanytskyi

A novel equation of state used for analysis of the heavy ion collision experimental data is generalized to also describe the matter inside neutron stars. This approach differs from…