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Title: The new binary pulsar and the observation of gravitational spin precession
Authors: Hari Dass, N.D.
Radhakrishnan, V.
Keywords: Binary stars
Gravitational effects
Relativistic effects
Spin-orbit interactions
Pulse duration
Stellar radiation
Issue Date: Feb-1975
Publisher: Gordon and Breach Science Publishers.
Citation: Astrophysical Letters, 1975, Vol.16, p135-139.
Abstract: The possibility of observing gravitational spin precession due to spin-orbit coupling in a binary pulsar system is considered. An analysis is presented which can aid in delineating the relevant physical effects from pulse-structure data. In this analysis, it is assumed that the pulsar radiation emanates from a cone whose axis is tilted with respect to the axis of rotation. It is found that the time-averaged pulse width and polarization sweep vary periodically with time and that this variation has a periodicity of the order of the spin-precession frequency averaged over a complete revolution. It is concluded that for an orbital period of about 180 years, it suffices to measure polarization data with an accuracy of a few parts in 100 over a period of six months to a year in order to uncover the effects of spin precession. The consistency of the analysis is checked, and the calculations are applied to a recently discovered binary pulsar.
Description: Restricted Access.
ISSN: 0004-637X
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Copyright: 1975 Gordon and Breach Science Publishers.
Appears in Collections:Research Papers (A&A)

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