ABDUJABBAROV, Ahmadjon, Bobir TOSHMATOV, Jan SCHEE, Zdeněk STUCHLÍK and Bobomurat AHMEDOV. Gravitational lensing by regular black holes surrounded by plasma. International Journal of Modern Physics D. 2017, vol. 26, No 5, p. „1741011-1“-„1741011-18“, 18 pp. ISSN 0218-2718. Available from: https://dx.doi.org/10.1142/S0218271817410115.
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Basic information
Original name Gravitational lensing by regular black holes surrounded by plasma
Authors ABDUJABBAROV, Ahmadjon (860 Uzbekistan), Bobir TOSHMATOV (860 Uzbekistan, guarantor, belonging to the institution), Jan SCHEE (203 Czech Republic, belonging to the institution), Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Bobomurat AHMEDOV (860 Uzbekistan).
Edition International Journal of Modern Physics D, 2017, 0218-2718.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Singapore
Confidentiality degree is not subject to a state or trade secret
WWW International Journal of Modern Physics D
RIV identification code RIV/47813059:19240/17:A0000023
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1142/S0218271817410115
UT WoS 000399981000012
Keywords in English regular black hole; shadow of black hole; plasma around black hole
Tags International impact, Reviewed
Links GB14-37086G, research and development project.
Changed by Changed by: RNDr. Jan Hladík, Ph.D., učo 25379. Changed: 5/4/2018 16:12.
Abstract
In the weak field approximation, we study the gravitational lensing near the regular Bardeen, Hayward and Ayon-Beato-Garcia (ABG) black holes surrounded by plasma. The exact expressions for the deflection angle of the photons due to the effect of the gravitational field and the plasma have been obtained. The analysis of the image source brightness magnification in the background spacetimes of (i) Bardeen, (ii) Hayward and (iii) ABG regular black holes have shown that the increase of the corresponding charge of regular black hole causes the increase in the magnification of the source image. In addition to the primary ring, one may observe the secondary ring with smaller magnification. The influence of the plasma with (i) constant and (ii) radial power law electron density to the magnification of the source image has been studied.
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