The ergoregion in the Kerr spacetime: properties of the equatorial circular motion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F15%3A%230005485" target="_blank" >RIV/47813059:19240/15:#0005485 - isvavai.cz</a>
Result on the web
<a href="http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-015-3455-0" target="_blank" >http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-015-3455-0</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-015-3455-0" target="_blank" >10.1140/epjc/s10052-015-3455-0</a>
Alternative languages
Result language
angličtina
Original language name
The ergoregion in the Kerr spacetime: properties of the equatorial circular motion
Original language description
We investigate in detail the circular motion of test particles in the equatorial plane of the ergoregion in the Kerr spacetime. We consider all the regions where circular motion is allowed, and we analyze the stability properties and the energy and angular momentum of the test particles. We show that the structure of the stability regions has definite features that make it possible to distinguish between black holes and naked singularities. The naked singularity case presents a very structured non-connected set of regions of orbital stability, where the presence of counterrotating particles and zero angular momentum particles for a specific class of naked singularities is interpreted as due to the presence of a repulsive field generated by the centralsource of gravity. In particular, we analyze the effects of the dynamical structure of the ergoregion (the union of the orbital regions for different attractor spins) on the behavior of accretion disks around the central source. The prope
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
The European Physical Journal C
ISSN
1434-6044
e-ISSN
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Volume of the periodical
75
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
"234-1"-"234-20"
UT code for WoS article
000355681400002
EID of the result in the Scopus database
2-s2.0-84930203367