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

• Autorzy: Pavel Bakala , Petr Čermák , Stanislav Hledík , Zdeněk Stuchlík , Kamila Truparová
• Języki publikacji: EN

Abstrakty

EN

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 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.

Słowa kluczowe

EN

black holes; cosmological constant; gravitational lensing; visualization; numerical relativity

• Czasopismo: Open Physics
• Rocznik: 2007
• Tom: 5
• Numer: 4
• Strony: 599-610

Daty

wydano

2007-12-01

online

2007-12-01

Twórcy

autor

Pavel Bakala

• Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-746 01, Opava, Czech Republic,

autor

Petr Čermák

• Institute of Computer Science, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-746 01, Opava, Czech Republic

autor

Stanislav Hledík

• Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-746 01, Opava, Czech Republic

autor

Zdeněk Stuchlík

• Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-746 01, Opava, Czech Republic

autor

Kamila Truparová

• Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, CZ-746 01, Opava, Czech Republic

Bibliografia

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Identyfikatory

DOI

10.2478/s11534-007-0033-6