Chaotic motion in the Johannsen-Psaltis spacetime

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00484970" target="_blank" >RIV/67985815:_____/17:00484970 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Chaotic motion in the Johannsen-Psaltis spacetime
Original language description
The Johannsen-Psaltis spacetime is a perturbation of the Kerr spacetime designed to avoid pathologies like naked singularities and closed timelike curves. This spacetime depends not only on the mass and the spin of the compact object, but also on extra parameters, making the spacetime deviate from Kerr. In this work we consider only the lowest order physically meaningful extra parameter. We use numerical examples to show that geodesic motion in this spacetime can exhibit chaotic behavior. We study the corresponding phase space by using Poincaré sections and rotation numbers to show chaotic behavior, and we use Lyapunov exponents to directly estimate the sensitivity to initial conditions for chaotic orbits.
Czech name
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Czech description
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Project
<a href="/en/project/GJ17-06962Y" target="_blank" >GJ17-06962Y: Non-linear phenomena in a multi-channel astronomy of black holes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of RAGtime 17/19: Workshops on black holes and neutron stars
ISBN
9788075102577
ISSN
2336-5668
e-ISSN
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Number of pages
8
Pages from-to
253-260
Publisher name
Silesian University
Place of publication
Opava
Event location
Opava
Event date
Nov 17, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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