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Influence of Internal Structure on the Motion of Test Bodies in Extreme Mass Ratio Situations

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons144501

Steinhoff,  Jan
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Steinhoff, J., & Puetzfeld, D. (2015). Influence of Internal Structure on the Motion of Test Bodies in Extreme Mass Ratio Situations. In K. Rosquist, R. T. Jantzen, & R. Ruffini (Eds.), Proceedings of the MG13 Meeting on General Relativity (pp. 978-980). World Scientific.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0025-039D-C
Zusammenfassung
We present some recent results on the motion of test bodies with internal structure in General Relativity. On the basis of a multipolar approximation scheme, we study the motion of extended test bodies endowed with an explicit model for the quadrupole. The model is inspired by effective actions recently proposed in the context of the post-Newtonian approximation, including spin-squared and tidal contributions. In the equatorial plane of the Kerr geometry, the motion can be characterized by an effective potential of the binding energy. We compare our findings to recent results for the conservative part of the self-force in astrophysically realistic situations.