On the Light Rays Propagating in Plasma Medium Around Relativistic Objects

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10440081" target="_blank" >RIV/00216208:11320/21:10440081 - isvavai.cz</a>
Result on the web
<a href="https://www.mff.cuni.cz/veda/konference/wds/proc/pdf21/WDS21_02_f1_Bezdekova.pdf" target="_blank" >https://www.mff.cuni.cz/veda/konference/wds/proc/pdf21/WDS21_02_f1_Bezdekova.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
On the Light Rays Propagating in Plasma Medium Around Relativistic Objects
Original language description
Profiles of allowed regions for the propagation of rays in the vicinity of a Kerr black hole in the refractive medium (plasma) are studied. Cold plasma approximation is applied and the dispersion relation in the given surroundings is solved. Three different plasma density profiles - nonsingular isothermal sphere, exponential, and power-law distributions, corresponding to various lensing galaxy models, are considered. The allowed regions are analyzed in terms of impact parameters, allowing to estimate ray properties favorable for their detection. It is shown that plasma significantly affects the range of ray impact parameters which can be reached by an observer located between the outer horizon and the static limit of the black hole. It is shown that the plasma effect is most significant close to the black hole and for the power-law density distribution model.
Czech name
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Czech description
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Project
<a href="/en/project/GA21-11268S" target="_blank" >GA21-11268S: Mass and charge currents in general relativity and astrophysics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
WDS'21 Proceedings of Contributed Papers — Physics
ISBN
978-80-7378-455-3
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
13-20
Publisher name
Matfyzpress
Place of publication
Praha
Event location
Praha/ZOOM
Event date
Jun 15, 2021
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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