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Measurement of Gravitational Spin-Orbit Coupling in a Binary Pulsar System (2004)

Stairs, I. H. ; Arzoumanian, Z. ; Thorsett. S. E.

In: CASI

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Publication Date: 2018-06-06

Description: In relativistic gravity, a spinning pulsar will precess as it orbits a compact companion star. We have measured the effect of such precession on the average shape and polarization of the radiation from PSR B1534+12. We have also detected, with limited precision, special-relativistic aberration of the revolving pulsar beam due to orbital motion. Our observations fix the system geometry, including the misalignment between the spin and orbital angular momenta, and yield a measurement of the precession timescale consistent with the predictions of General Relativity.

Keywords: Astronomy

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