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Motion of spinning test bodies in Kerr spacetime

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arxiv 1408.1773 v2 pith:PC7YYYP6 submitted 2014-08-08 gr-qc

Eva Hackmann , Claus Lämmerzahl , Yuri N. Obukhov , Dirk Puetzfeld , Isabell Schaffer This is my paper · ORCID
classification gr-qc
keywords testbodiesmotionspinningapproximationbodykerrmeans
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We investigate the motion of spinning test bodies in General Relativity. By means of a multipolar approximation method for extended test bodies we derive the equations of motion, and classify the orbital motion of pole-dipole test bodies in the equatorial plane of the Kerr geometry. An exact expression for the periastron shift of a spinning test body is given. Implications of test body spin corrections are studied and compared with the results obtained by means of other approximation schemes.

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  1. Comparing effective-one-body and Mathisson-Papapetrou-Dixon results for a spinning test particle on circular equatorial orbits around a Kerr black hole

    gr-qc 2024-12 conditional novelty 6.0 of 10

    For circular equatorial orbits, EOB and MPD dynamics and gravitational-wave fluxes agree for Schwarzschild primaries, while for Kerr the difference grows with spin and is largest for high positive primary spin.

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