Evolution of Close Neutron Star Binaries | Zendy

W. Ogawaguchi | Zendy; Y. Kojima | Zendy

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Evolution of Close Neutron Star Binaries

Author(s) -

W. Ogawaguchi,

Y. Kojima

Publication year - 1996

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.96.901

Subject(s) - physics , neutron star , astronomy , astrophysics , star (game theory) , x ray binary , nuclear physics

We have calculated evolution of neutron star binaries towards the coalescencedriven by gravitational radiation. The hydrodynamical effects as well as thegeneral relativistic effects are important in the final phase. All correctionsup to post$^{2.5}$-Newtonian order and the tidal effect are included in theorbital motion. The star is approximated by a simple Newtonian stellar modelcalled affine star model. Stellar spins and angular momentum are assumed to bealigned. We have showed how the internal stellar structure affects the stellardeformation, variations of the spins, and the orbital motion of the binary justbefore the contact. The gravitational wave forms from the last a fewrevolutions significantly depend on the stellar structure.Comment: 13 pages, LaTeX, 15 figures, to appear in Prog. Theor. Phys. vol.9

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