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What a difference a quadrupole makes?

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arxiv 2009.12839 v2 pith:RQQG7ASQ submitted 2020-09-27 gr-qc

classification gr-qc
keywords quadrupoleblackcollisionmassmomentvicinityaffectscompact
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We consider some implications of the departure from spherical symmetry for static solutions of the vacuum Einstein's equations describing black hole mimickers. In particular, we investigate how the presence of mass quadrupole moment affects the collision energy of test particles. We show that collision processes in the vicinity of such exotic compact sources with non vanishing mass quadrupole moment may be significantly different from those in the vicinity of black holes.

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Cited by 1 Pith paper

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  1. Constraining quadrupole deformations with relativistic effects

    gr-qc 2025-06 reject novelty 6.0 of 10

    In the Zipoy-Voorhees spacetime, the Shapiro time delay and the Shirokov oscillation frequencies acquire corrections from the quadrupole deformation parameter q, with the delay correction appearing at first order in q.

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