Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes

Author:

Bakala Pavel,Čermák Petr,Hledík Stanislav,Stuchlík Zdeněk,Truparová Kamila

Abstract

AbstractWe 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 effects 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. Techniques of parallel programming are applied to get a high performance and a fast run of the BHC simulation code.

Publisher

Walter de Gruyter GmbH

Subject

General Physics and Astronomy

Reference16 articles.

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3. W. Benger: “Simulation of a Black Hole by Raytracing”, In: Relativity and Scientific Computing: Computer Algebra, Numerics, Visualization, Springer-Verlag Telos, 1996.

4. A. J. S. Hamilton: “Black Hole Flight Simulator”, Bulletin of the American Astronomical Society, Vol. 36, (2004), pp. 810.

5. D. Kobras, D. Weiskopf and H. Ruder: “Image-based rendering and general relativity”, In: WSCG 2001 Conference Proceedings, University of West Bohemia, Pilsen, 2001, pp. 130–137.

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