تقرير
Dynamics of Fast Rotating Neutron Stars: An Approach in the Hilbert Gauge
| العنوان: | Dynamics of Fast Rotating Neutron Stars: An Approach in the Hilbert Gauge |
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| المؤلفون: | Krüger, C. J., Kokkotas, K. D. |
| سنة النشر: | 2020 |
| المجموعة: | General Relativity and Quantum Cosmology |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology |
| الوصف: | We describe a set of time evolution equations and its numerical implementation for the investigation of non-axisymmetric oscillations of rapidly rotating compact objects in full General Relativity, taking into account the contribution of a dynamic spacetime. We derive the perturbation equations for the spacetime in the Hilbert gauge, while the hydrodynamical evolution is based on perturbations of the energy-momentum tensor. In our numerical implementation, we use Kreiss-Oliger dissipation in order to achieve a stable time evolution. Our code features high accuracy at comparably low computational expense and we are able to extract the frequencies of non-axisymmetric modes of compact objects with rotation rates up to the Kepler limit. Comment: 26 pages, 4 figures, revised version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.102.064026 |
| URL الوصول: | http://arxiv.org/abs/2008.04127 |
| رقم الأكسشن: | edsarx.2008.04127 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.102.064026 |
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