Gravitational wave asteroseismology with fast rotating neutron stars

Autor:	Gaertig, Erich, Kokkotas, Kostas D.
Rok vydání:	2010
Předmět:	Astrophysics - Solar and Stellar Astrophysics General Relativity and Quantum Cosmology
Zdroj:	Phys.Rev.D83:064031,2011
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.83.064031
Popis:	We investigate damping and growth times of the f-mode for rapidly rotating stars and a variety of different polytropic equations of state in the Cowling approximation. We discuss the differences in the eigenfunctions of co- and counterrotating modes and compute the damping times of the f-mode for several EoS and all rotation rates up to the Kepler-limit. This is the first study of the damping/growth time of this type of oscillations for fast rotating neutron stars in a general relativistic framework. We use these frequencies and damping/growth times to create robust empirical formulae which can be used for gravitational wave asteroseismology. The estimation of the damping/growth time is based on the quadrupole formula and our results agree very well with Newtonian ones in the appropriate limit. Comment: 15 pages, 8 figures, version accepted for publication in PhysRevD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1005.5228 Zobrazit plný text záznamu View this record from Arxiv