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 |
---|---|
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 |
---|