A post-Keplerian parameter to test gravito-magnetic effects in binary pulsar systems

Details A post-Keplerian parameter to test gravito-magnetic effects in binary pulsar systems A post-Keplerian parameter to test gravito-magnetic effects in binary pulsar systems

2005-09-26

arxiv.org/abs/gr-qc/0509098v2

Phys.Rev. D72 (2005) 084030

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, RevTeX, 1 eps figure, accepted for publication in Physical Review D; references added

Scientific paper

10.1103/PhysRevD.72.084030

We study the pulsar timing, focusing on the time delay induced by the gravitational field of the binary systems. In particular, we study the gravito-magnetic correction to the Shapiro time delay in terms of Keplerian and post-Keplerian parameters, and we introduce a new post-Keplerian parameter which is related to the intrinsic angular momentum of the stars. Furthermore, we evaluate the magnitude of these effects for the binary pulsar systems known so far. The expected magnitude is indeed small, but the effect is important per se.

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