General classification of charged test particle circular orbits in Reissner-Nordström spacetime

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F17%3AA0000025" target="_blank" >RIV/47813059:19240/17:A0000025 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-017-4769-x" target="_blank" >https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-017-4769-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-017-4769-x" target="_blank" >10.1140/epjc/s10052-017-4769-x</a>

Result language

angličtina

Original language name

General classification of charged test particle circular orbits in Reissner-Nordström spacetime

Original language description

We investigate charged particles' circular motion in the gravitational field of a charged mass distribution described by the Reissner–Nordström spacetime. We introduce a set of independent parameters completely characterizing the different spatial regions in which circular motion is allowed. We provide a most complete classification of circular orbits for different sets of particle and source charge-to-mass ratios. We study both black holes and naked singularities and show that the behavior of charged particles depend drastically on the type of source. Our analysis shows in an alternative manner that the behavior of circular orbits can in principle be used to distinguish between black holes and naked singularities. From this analysis, special limiting values for the dimensionless charge of black hole and naked singularity emerge, namely, Q/M = 1/2, Q/M = sqroot (13)/5 and Q/M = sqroot (2/3) for the black hole case and Q/M = 1, Q/M = 5/(2 sqroot 6), Q/M = 3 sqroot (6)/7, and finally Q/M = sqroot (9/8) for the naked singularity case. Similarly and surprisingly, analogous limits emerge for the orbiting particles charge-to-mass ratio epsilon, for positive charges epsilon = 1, epsilon = 2 and epsilon = M/Q. These limits play an important role in the study of the coupled electromagnetic and gravitational interactions, and the investigation of the role of the charge in the gravitational collapse of compact objects.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GJ16-03564Y" target="_blank" >GJ16-03564Y: Accretion configurations in strong gravity combined with electromagnetic field</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

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

77

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

'206-1'-'206-18'

UT code for WoS article

000403593700001

EID of the result in the Scopus database

2-s2.0-85017032397