3 papers
astro-ph.HE2026
Stability Boundary of Neutron-Dark Matter Mixed Stars
Xiao-Ding Zhou, Tian-Shun Chen, Si-Man Wu +1
Regarding the stability of two-fluid star models, we rigorously prove the equivalence between the emergence of a zero-frequency radial oscillation mode and the static critical-curv…
astro-ph.HE2026
An Analytical Toy Equation of State for Neutron Stars Consistent with Current Observations
Tian-Shun Chen, Xiao-Ding Zhou, Kilar Zhang
Fast analytic and semi-analytic studies of neutron stars often require an equation of state that is convenient to evaluate while producing relativistic stellar sequences compatible…
astro-ph.HE2025
Equivalence of Stability Criteria for Multi-Fluid Stars
Tian-Shun Chen, Xiao-Ding Zhou, Hao Feng +1
We prove a static criterion for radial zero modes in relativistic multi-fluid stars whose isentropic barotropic components are separately conserved and interact only through gravit…