Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-10-11
Class.Quant.Grav.23:6345-6356,2006
Astronomy and Astrophysics
Astrophysics
Scientific paper
10.1088/0264-9381/23/22/016
We briefly review the properties of quasi-normal modes of neutron stars and black holes. We analyse the consequences of a possible detection of such modes via the gravitational waves associated with them, especially addressing our study to the Brazilian spherical antenna, on which a possible detection would occur at 3.0-3.4 kHz. A question related to any putative gravitational wave detection concerns the source that produces it. We argue that, since the characteristic damping times for the gravitational waves of neutron stars and black holes are different, a detection can distinguish between them, and also distinguish the neutron stars oscillating modes. Moreover, since the source can be identified by its characteristic damping time, we are able to extract information about the neutron star or black hole. This information would lead, for example, to a strong constraint in the nuclear matter equation of state, namely the compression modulus should be K=220 MeV.
de Araujo Jose Carlos N.
Marranghello Guilherme F.
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