J
2007
Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes
BAKALA, Pavel, Stanislav HLEDÍK a Zdeněk STUCHLÍK
Základní údaje
Originální název
Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes
Název anglicky
Extreme gravitational lensing in vicinity of Schwarzschild-de Sitter black holes
Vydání
CENTRAL EUROPEAN JOURNAL OF PHYSICS, DE - Spolková republika Německo, 2007, 1895-1082
Další údaje
Typ výsledku
Článek v odborném periodiku
Utajení
není předmětem státního či obchodního tajemství
Organizační jednotka
Filozoficko-přírodovědecká fakulta v Opavě
Klíčová slova anglicky
black holes, cosmological constant, gravitational lensing, visualization, numerical relativity
Příznaky
Mezinárodní význam, Recenzováno
Návaznosti
LC06014, projekt VaV. MSM4781305903, záměr.
V originále
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.
Anglicky
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.
Zobrazeno: 16. 11. 2024 10:03