Gravitational waves from instabilities in relativistic stars
Preprint
- 4 November 2002
Abstract
This article provides an overview of stellar instabilities as sources of gravitational waves. The aim is to put recent work on secular and dynamical instabilities in compact stars in context, and to summarize the current thinking about the detectability of gravitational waves from various scenarios. As a new generation of kilometer length interferometric detectors are now coming online this is a highly topical theme. The review is motivated by two key questions for future gravitational-wave astronomy: Are the gravitational waves from various instabilities detectable? If so, what can these gravitational-wave signals teach us about neutron star physics? Even though we may not have clear answers to these questions, recent studies of the dynamical bar-mode instability and the secular r-mode instability have provided new insights into many of the difficult issues involved in modelling unstable stars as gravitational-wave sources.Keywords
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