STUCHLÍK, Zdeněk, Jan SCHEE and Dmitriy OVCHINNIKOV. Generic Regular Black Holes Related to Nonlinear Electrodynamics with Maxwellian Weak-field Limit: Shadows and Images of Keplerian Disks. Astrophysical Journal. Institute of Physics Publishing, 2019, vol. 887, No 2, p. "145-1"-"145-19", 19 pp. ISSN 0004-637X. Available from: https://dx.doi.org/10.3847/1538-4357/ab55d5.
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Basic information
Original name Generic Regular Black Holes Related to Nonlinear Electrodynamics with Maxwellian Weak-field Limit: Shadows and Images of Keplerian Disks
Authors STUCHLÍK, Zdeněk (203 Czech Republic, guarantor, belonging to the institution), Jan SCHEE (203 Czech Republic, belonging to the institution) and Dmitriy OVCHINNIKOV (860 Uzbekistan, belonging to the institution).
Edition Astrophysical Journal, Institute of Physics Publishing, 2019, 0004-637X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19240/19:A0000409
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.3847/1538-4357/ab55d5
UT WoS 000506012000039
Keywords in English general relativity; black holes; charged black holes; gravitation; gravitational lensing
Tags FÚ, GA19-03950S, RCTPA, RIVOK, SGS12-2019
Tags International impact, Reviewed
Links GA19-03950S, research and development project.
Changed by Changed by: Ing. Petra Skoumalová, učo 50554. Changed: 21/4/2020 10:25.
Abstract
We study optical phenomena in generic regular, magnetically charged, spherically symmetric black hole spacetimes arising from coupling of the Einstein gravity and nonlinear electrodynamics (NED) with the Maxwellian weak-field limit, where photons follow null geodesics of an effective geometry, directly reflecting the electromagnetic nonlinearity. We compare the motion of photons with that of massless neutrinos, which are not affected directly by nonlinearities of the non-Maxwellian electromagnetic field and follow null geodesics of the background spacetime. We determine shadows of such black holes, compare the time delays of photons and neutrinos moving in their field, and construct images of the Keplerian disks. We demonstrate that in the case of the "Maxwellian" NED black holes the optical phenomena give relevant signatures of the NED effects detectable by GRAVITY or the Event Horizon Telescope, but they are not strong enough to be excluded by recent observations as in the case of regular Bardeen black holes.
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