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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GJ16-03564Y" target="_blank" >GJ16-03564Y: Konfigurace hmoty akreující v silném gravitačním poli kombinovaném s polem elektromagnetickým</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

77

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

'206-1'-'206-18'

Kód UT WoS článku

000403593700001

EID výsledku v databázi Scopus

2-s2.0-85017032397