Pulsational mode and detection of gravitational wave source

Details Pulsational mode and detection of gravitational wave source Pulsational mode and detection of gravitational wave source

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.208...41p&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 208, no. 1, p. 41-54

Astronomy and Astrophysics

Astrophysics

Detection, Eccentricity, Gravity Waves, Neutron Stars, Vibration Damping, Vibration Mode, Chandrasekhar Equation, Energy Dissipation, Virial Theorem

Scientific paper

Based on Chandrasekhar's and Lebovitz's treatment of the roto-vibrational modes of a homogeneous compressible neutron star, we calculate damping rates per unit eccentricity of toroidal mode and pulsational mode by gravitational radiation. It is found that the damping rate of the pulsational mode which becomes the quadrupole mode (emits gravitational wave) has a minimum at the eccentricity 'e' = 0.72 for gamma = 4/3, and 8/5 whereas both the pulsational mode with gamma = 5.3 and the toroidal mode have no minima, i.e., the pseudo-radial mode can last many years longer than the toroidal mode. We suggest to measure the damping rate of pulsational mode only for the detection of a strong gravity wave source.

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