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arXiv · 1703.08156

A Semi-analytic Study of Axial Perturbations of Ultra Compact Stars

Sebastian H. Völkel·Kostas D. Kokkotas
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Abstract

Compact object perturbations, at linear order, often lead in solving one or more coupled wave equations. The study of these equations was typically done by numerical or semi-analytical methods. The WKB method and the associated Bohr-Sommerfeld rule have been proved extremely useful tools in the study of black-hole perturbations and the estimation of the related quasi-normal modes. Here we present an extension of the aforementioned semi-analytic methods in the study of perturbations of ultra-compact stars and gravastars.

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Sebastian H. Völkel, Kostas D. Kokkotas. 2017-03-23. A Semi-analytic Study of Axial Perturbations of Ultra Compact Stars. https://doi.org/10.1088/1361-6382%2Faa68cc

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