NUMERICAL TREATMENT OF ROTATING NEUTRON STARS SIMULATED BY GENERAL-RELATIVISTIC POLYTROPIC MODELS: A COMPLEX-PLANE STRATEGY

V. S. Geroyannis () and I. E. Sfaelos ()
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V. S. Geroyannis: Astronomy Laboratory, Department of Physics, University of Patras, Greece
I. E. Sfaelos: Astronomy Laboratory, Department of Physics, University of Patras, Greece

International Journal of Modern Physics C (IJMPC), 2011, vol. 22, issue 03, 219-248

Abstract: We solve numerically in the complex plane all the differential equations involved in Hartle's perturbation method for computing general-relativistic polytropic models of rotating neutron stars. We give emphasis on computing quantities describing the geometry of models in rapid rotation. Compared to numerical results obtained by certain sophisticated iterative methods, we verify appreciable improvement of our results vs to those given by the classical Hartle's perturbative scheme.

Keywords: Neutron stars; numerical methods; polytropic models; relativity; rotation; 02.60.-x; 04.25.Dm; 04.40.Dg; 47.75.+f; 97.60.Jd (search for similar items in EconPapers)
Date: 2011
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DOI: 10.1142/S0129183111016269

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