Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe.486n&link_type=abstract
Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:
Astronomy and Astrophysics
Astrophysics
Scientific paper
In addition to the usual fluid modes (p-modes), neutron stars exhibit a class of quasinormal modes mainly associated with the metric of the space-time, called w-modes. It has recently been suggested that both mass and radius of a neutron star could be determined, thereby gaining information on its nuclear equation of state, by extracting the oscillation frequencies of one or more p-modes and of the fundamental w-mode from measured gravitational radiation emitted by perturbed neutron stars. We show that even in cases where w-mode ringing is clearly visible in a simulated signal, it turns out to be exceedingly difficult to extract the frequency with reasonable accuracy unless one assumes a very optimistic signal-to-noise ratio as well as a dominant excitation of the w-mode.
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