2 citations · 3 across the 4 of their papers we have counts for
4 papers
Rotating neutron stars in the first order post-Newtonian approximation
Athanasios Fotopoulos, Vasileios G. Karageorgopoulos, Vassilis S. Geroyannis
We study models of uniformly and differentially rotating neutron stars in the framework of post-Newtonian approximation in general relativity as established by Chandrasechar. In pa…
Polytropic Wind Solutions via the Complex Plane Strategy
Vasileios Karageorgopoulos, Konstantinos N. Gourgouliatos, Vassilis Geroyannis
Solar-type stars generate spherical winds, which are pressure driven flows, that start subsonic, reach the sound speed at the sonic point and transition to supersonic flows. The so…
A parallel code for multiprecision computations of the Lane-Emden differential equation
Vassilis S. Geroyannis, Vasileios G. Karageorgopoulos
We compute multiprecision solutions of the Lane-Emden equation. This differential equation arises when introducing the well-known polytropic model into the equation of hydrostatic…
Critical rotation of general-relativistic polytropic models simulating neutron stars: a post-Newtonian hybrid approximative scheme
Vassilis S. Geroyannis, Vasileios G. Karageorgopoulos
We develop a "hybrid approximative scheme" in the framework of the post-Newtonian approximation for computing general-relativistic polytropic models simulating neutron stars in cri…