A semi-analytic study of axial perturbations of ultra compact stars

  title={A semi-analytic study of axial perturbations of ultra compact stars},
  author={Sebastian H. Volkel and Kostas D. Kokkotas},
  journal={Classical and Quantum Gravity},
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 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… Expand
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