Detailed Information on Publication Record

BAKALA, Pavel, Petr ČERMÁK, Stanislav HLEDÍK, Zdeněk STUCHLÍK and Kamila TRUPAROVÁ PLŠKOVÁ. A Virtual Trip to the Schwarzschild-de Sitter Black Hole. In Eleventh Marcel Grossmann Meeting on General Relativity Berlin. Singapore: World Scientific, 2006, 3 pp. ISBN 978-981-283-426-3.

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Basic information
Original name	A Virtual Trip to the Schwarzschild-de Sitter Black Hole
Authors	BAKALA, Pavel, Petr ČERMÁK, Stanislav HLEDÍK, Zdeněk STUCHLÍK and Kamila TRUPAROVÁ PLŠKOVÁ.
Edition	Singapore, Eleventh Marcel Grossmann Meeting on General Relativity Berlin, 3 pp. 2006.
Publisher	World Scientific

Other information
Original language	English
Type of outcome	Proceedings paper
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
ISBN	978-981-283-426-3
Keywords in English	black hole, computer code, gravitational lensing, Schwarzschild-de Sitter
Tags	sbornik, UF
Tags	International impact
Links	MSM4781305903, plan (intention).
Changed by	Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 8/12/2020 13:48.

Abstract
We describe a new method to developing a realistic fully general relativistic model and computer code of optical projection in a strong, spherically symmetric gravitational field. Classical theoretical analysis of optical projection for an observer in the vicinity of a Schwarzschild black hole was extended to black hole spacetimes with a repulsive cosmological constant (Schwarzschild--de~Sitter spacetimes). In our simulation we consider both null geodesics beyond and ahead of the turning point. Simulation takes care of frequency shift effects, as well as the amplification of intensity. Our code generates static images of sky for static observers and movie simulation for free-falling observers. We use techniques of parallel programming to get high performance and fast run of our code. New interesting investigated effect is diffrent behaviour of apparent angular size of the black hole as a function of the cosmological constant for observers above and under circular photon orbit.

Abstract

We describe a new method to developing a realistic fully general relativistic model and computer code of optical projection in a strong, spherically symmetric gravitational field. Classical theoretical analysis of optical projection for an observer in the vicinity of a Schwarzschild black hole was extended to black hole spacetimes with a repulsive cosmological constant (Schwarzschild--de~Sitter spacetimes). In our simulation we consider both null geodesics beyond and ahead of the turning point. Simulation takes care of frequency shift effects, as well as the amplification of intensity. Our code generates static images of sky for static observers and movie simulation for free-falling observers. We use techniques of parallel programming to get high performance and fast run of our code. New interesting investigated effect is diffrent behaviour of apparent angular size of the black hole as a function of the cosmological constant for observers above and under circular photon orbit.