Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-11-04
Class.Quant.Grav. 20 (2003) R105
Astronomy and Astrophysics
Astrophysics
invited review article for Class Quantum Grav., 47 pages, 16 ps figures
Scientific paper
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.
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