Perturbative Analysis of Universality and Individuality in Gravitational Waves from Neutron Stars
L. K. TsuiPhysics Department and Institute of Theoretical Physics, Chinese University of Hong Kong, Shatin, Hong Kong, ChinaP. T. LeungPhysics Department and Institute of Theoretical Physics, Chinese University of Hong Kong, Shatin, Hong Kong, China
2005en
ABI
Abstract
The universality observed in gravitational wave spectra of non-rotating neutron stars is analyzed here. We show that the universality in the axial oscillation mode can be reproduced with a simple stellar model, namely the centrifugal barrier approximation (CBA), which captures the essence of the Tolman VII model of compact stars. Through the establishment of scaled co-ordinate logarithmic perturbation theory (SCLPT), we are able to explain and quantitatively predict such universal behavior. In addition, quasi-normal modes of individual neutron stars characterized by different equations of state can be obtained from those of CBA with SCLPT.
Identifiers
Citations and references
Cited by 30 references