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Excitation of the odd-parity quasi-normal modes of compact objects

Zeferino Andrade·Richard H. Price
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Abstract

The gravitational radiation generated by a particle in a close unbounded orbit around a neutron star is computed as a means to study the importance of the $w$ modes of the neutron star. For simplicity, attention is restricted to odd parity (``axial'') modes which do not couple to the neutron star's fluid modes. We find that for realistic neutron star models, particles in unbounded orbits only weakly excite the $w$ modes; we conjecture that this is also the case for astrophysically interesting sources of neutron star perturbations. We also find that for cases in which there is significant excitation of quadrupole $w$ modes, there is comparable excitation of higher multipole modes.

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Zeferino Andrade, Richard H. Price. 1999-07-02. Excitation of the odd-parity quasi-normal modes of compact objects. https://doi.org/10.1103/physrevd.60.104037

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