Dynamical motion of matter around a charged black hole
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F21%3AA0000136" target="_blank" >RIV/47813059:19630/21:A0000136 - isvavai.cz</a>
Result on the web
<a href="https://www.worldscientific.com/doi/pdf/10.1142/S0218271821500371" target="_blank" >https://www.worldscientific.com/doi/pdf/10.1142/S0218271821500371</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1142/S0218271821500371" target="_blank" >10.1142/S0218271821500371</a>
Alternative languages
Result language
angličtina
Original language name
Dynamical motion of matter around a charged black hole
Original language description
We investigate the dynamical motion of test particles and accretion processes around spherically symmetric charged black hole. We first show the derivation of the Paczynski-Wiita (PW) potential for any spherically symmetric spacetime and present analytical form of the PW potential in the Reissner-Nordstrom (RN) spacetime and the RN-type spacetime. We study the dependence of the characteristic orbits of test (neutral and charged) particles around a charged black hole from two main parameters, namely, charge of RN black hole and the interaction of charged particle with the external electromagnetic field of the black hole and present graphical trajectories of test particles around the black hole. It is shown that with increasing the absolute value of interaction parameter, |qQ|, the innermost stable circular orbit (ISCO) radius for charged particle always increases. It is also shown that the energy efficiency for a charged particles can reach up to 60% in the presence of an external charged black hole, while for neutral particles it can reach up to 8% for neutral particles. The capture cross-section of the photon is by the charged black and the optical appearance of the thin accretion disk around the charged black. Finally, we have studied the flux energy and the thermal spectrum of the accretion disk consisting of the polytropic gas, around the charged black hole.
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
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Continuities
S - Specificky vyzkum na vysokych skolach<br>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
International Journal of Modern Physics D
ISSN
0218-2718
e-ISSN
1793-6594
Volume of the periodical
30
Issue of the periodical within the volume
5
Country of publishing house
SG - SINGAPORE
Number of pages
22
Pages from-to
„2150037-1“-„2150037-22“
UT code for WoS article
000643945700004
EID of the result in the Scopus database
2-s2.0-85104801284