Innermost stable circular orbit of charged particles in Reissner-Nordstrom, Kerr-Newman, and Kerr-Sen spacetimes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00549278" target="_blank" >RIV/67985815:_____/21:00549278 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.103.024016" target="_blank" >https://doi.org/10.1103/PhysRevD.103.024016</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.103.024016" target="_blank" >10.1103/PhysRevD.103.024016</a>
Alternative languages
Result language
angličtina
Original language name
Innermost stable circular orbit of charged particles in Reissner-Nordstrom, Kerr-Newman, and Kerr-Sen spacetimes
Original language description
In this article we study the innermost stable circular orbit (ISCO) of electrically charged particles in the electrically charged Reissner-Nordstrom spacetime, the Kerr-Newman spacetime and the Kerr-Sen spacetime. We find that the radius of the ISCO increases with an increasing particle-black hole charge product vertical bar qQ vertical bar in the case of attractive Coulomb interaction qQ < 0. For repulsive Coulomb interaction, the ISCO radius first decreases to a minimum and then increases again, until it diverges as the charge product approaches one. If the charge Q of the black hole is very small, the minimum of the ISCO radius lies at qQ = 0. Repulsive and attractive Coulomb interactions will always increase the ISCO radius in this limit. Stable bound orbits of charged particles cease to exist in the Reissner-Nordstrom and Kerr-Newman spacetime for qQ >= 1. In the Kerr-Sen spacetime the limiting case depends on the charge of the black hole and if dilaton coupling is applied to the test particle. We find qQ >= 1 + Q(2) without dilaton-coupling and qQ >= 1 + Q(2) with dilaton coupling alpha = 1.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GC19-01137J" target="_blank" >GC19-01137J: Largest black holes in the sky: origin and evolution of horizon-scale structures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
103
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
024016
UT code for WoS article
000606732400006
EID of the result in the Scopus database
2-s2.0-85099301282