Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..321g&link_type=abstract
SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,
Astronomy and Astrophysics
Astrophysics
Scientific paper
The laser interferometric gravitational wave detectors should be fully operationally soon. Triaxial instabilities of rotating neutron stars can play an important role as an emission mechanism of gravitational waves in the frequency range of forthcoming LIGO/VIRGO interferometric detectors. We study the secular triaxial instability of rigidly rotating neutron stars and strange stars in general relativity. At the Newtonian limit, this corresponds to the bifurcation point between the Maclaurin spheroid and the Jacobi ellipsoids. We find that stabilizating effect of relativity in the case of homogeneous fluid bodies is much weaker than showed by Shapiro and Zane (1998) post-Newtonian calculations. In the case of strange stars we find that the bar mode instability is possible for a broad ranges of gravitational masses and rotational frequencies.
Gondek-Rosinska Dorota
Gourgoulhon Eric
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