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- W3099897644 abstract "view Abstract Citations (75) References (27) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spin-Orbit Interactions in Neutron Star/Main-Sequence Binaries and Implications for Pulsar Timing Lai, Dong ; Bildsten, Lars ; Kaspi, Victoria M. Abstract The spin-induced quadrupole moment of a rapidly rotating star changes the orbital dynamics in a binary system, giving rise to advance (or regression) of periastron and precession of the orbital plane. We show that these effects are important in the recently discovered radio pulsar/main-sequence star binary system PSR J0045-7319 and reliably account for the observed peculiar timing residuals. Precise measurements of the apsidal motion and orbital plane precession can yield valuable information on the internal structure and rotation of the star. The detection of orbital precession implies that the spin of the companion star is not aligned with the orbital angular momentum and suggests that the supernova gave the pulsar a kick out of the original orbital plane. Tidal excitation of g-mode oscillations in the PSR J0045-7319 system induces an orbital period change of order ∣Δorb/Porb∣ ∼ 10 6 at each periastron passage, but the secular trend depends on the radiative damping time of the g-modes. We also discuss the spin-orbit coupling effects for the accreting X-ray pulsars and the other known radio pulsar/main-sequence binary, PSR B1259-63. Publication: The Astrophysical Journal Pub Date: October 1995 DOI: 10.1086/176350 arXiv: arXiv:astro-ph/9505042 Bibcode: 1995ApJ...452..819L Keywords: STARS: BINARIES: CLOSE; STARS: PULSARS: INDIVIDUAL ALPHANUMERIC: PSR J0045-319; STARS: PULSARS: INDIVIDUAL ALPHANUMERIC: PSR B1259-3; STARS: NEUTRON; STARS: OSCILLATIONS; STARS: ROTATION; Astrophysics E-Print: 12 pages, 2 figures. Plain TeX full text sources arXiv | ADS | data products SIMBAD (5)" @default.
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- W3099897644 title "Spin-Orbit Interactions in Neutron Star/Main-Sequence Binaries and Implications for Pulsar Timing" @default.
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