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

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

1999-02-20

arxiv.org/abs/gr-qc/9902062v2

Phys.Rev. D60 (1999) 104037

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

18 pages, 21 figures, submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.60.104037

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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