Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..287i&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 1, 1984, p. 287-290.
Astronomy and Astrophysics
Astrophysics
13
Gravitational Waves, Neutron Stars, Pulsars, Stellar Radiation, Stellar Rotation, Equations Of State, Polytropic Processes, Stellar Evolution, Stellar Models
Scientific paper
The effects of inhomogeneity on the emission of gravitational radiation from Jacobi configurations (uniformly rotating nonaxisymmetric configurations) are studied. If the equation of state is approximated by a polytropic relation, a neutron-star core with adiabatic index gamma lower than 3 can radiate up to a fraction about 0.001 to 0.0001 of its mass-energy while passing through a Jacobi phase during its evolution. This maximum fraction drops to zero at gamma of above 9/4, where Jacobi configurations cease to exist in the polytropic approximation. While some of the results suggest that the fast pulsar PSR 1937 + 214 is hovering near the Jacobi bifurcation point, it appears more likely that the pulsar is not rotating sufficiently rapidly for this to be the case.
Ipser James R.
Managan Robert A.
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