What a difference a quadrupole makes?

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 c...

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Bibliographic Details
Published in:arXiv.org 2021-12
Main Authors: Malafarina, Daniele, Sagynbayeva, Sabina
Format: Article
Language:English
Subjects:
Einstein equations
Particle collisions
Quadrupoles
Symmetry
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2009.12839