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Tidal Dynamics in Kerr Spacetime

C. Chicone·B. Mashhoon
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Abstract

The motion of free nearby test particles relative to a stable equatorial circular geodesic orbit about a Kerr source is investigated. It is shown that the nonlinear generalized Jacobi equation can be transformed in this case to an autonomous form. Tidal dynamics beyond the critical speed c/sqrt(2) is studied. We show, in particular, that a free test particle vertically launched from the circular orbit parallel or antiparallel to the Kerr rotation axis is tidally accelerated if its initial relative speed exceeds c/sqrt(2). Possible applications of our results to high-energy astrophysics are briefly mentioned.

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C. Chicone, B. Mashhoon. 2006-04-20. Tidal Dynamics in Kerr Spacetime. https://doi.org/10.1088/0264-9381%2F23%2F12%2F002

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