BAKALA, Pavel, Stanislav HLEDÍK and Zdeněk STUCHLÍK. Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes. CENTRAL EUROPEAN JOURNAL OF PHYSICS. DE - Spolková republika Německo, 2007, vol. 5, No 4, p. 599-610. ISSN 1895-1082. Available from: https://dx.doi.org/10.2478/s11534-007-0033-6.
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Basic information
Original name Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes
Name (in English) Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes
Authors BAKALA, Pavel, Stanislav HLEDÍK and Zdeněk STUCHLÍK.
Edition CENTRAL EUROPEAN JOURNAL OF PHYSICS, DE - Spolková republika Německo, 2007, 1895-1082.
Other information
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.2478/s11534-007-0033-6
UT WoS 000251320600014
Keywords in English black holes, cosmological constant, gravitational lensing, visualization, numerical relativity
Tags UF
Tags International impact, Reviewed
Links LC06014, research and development project. MSM4781305903, plan (intention).
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 8/12/2020 14:00.
Abstract
We have developed a realistic, fully general relativistic computer code to simulate optical projection in a strong, spherically symmetric gravitational field. The standard theoretical analysis of optical projection for an observer in the vicinity of a Schwarzschild black hole is extended to black hole spacetimes with a repulsive cosmological constant, i.e, Schwarzschild de Sitterspacetimes. Influence of the cosmological constant is investigated for static observers and observers radially free-falling from the static radius. Simulations include efects of the gravitational lensing, multiple images, Doppler and gravitational frequency shift, as well as the intensity amplification. The code generates images of the sky for the static observer and a movie simulations of the changing sky for the radially free-falling observer.
Abstract (in English)
We have developed a realistic, fully general relativistic computer code to simulate optical projection in a strong, spherically symmetric gravitational field. The standard theoretical analysis of optical projection for an observer in the vicinity of a Schwarzschild black hole is extended to black hole spacetimes with a repulsive cosmological constant, i.e, Schwarzschild de Sitterspacetimes. Influence of the cosmological constant is investigated for static observers and observers radially free-falling from the static radius. Simulations include efects of the gravitational lensing, multiple images, Doppler and gravitational frequency shift, as well as the intensity amplification. The code generates images of the sky for the static observer and a movie simulations of the changing sky for the radially free-falling observer.
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