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

Autoři

Vydání

CENTRAL EUROPEAN JOURNAL OF PHYSICS, DE - Spolková republika Německo, 2007, 1895-1082

Další údaje

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Utajení

není předmětem státního či obchodního tajemství

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

DOI

UT WoS

000251320600014

Klíčová slova anglicky

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

Štítky

Příznaky

Mezinárodní význam, Recenzováno

Návaznosti

LC06014, projekt VaV. MSM4781305903, záměr.
Změněno: 8. 12. 2020 14:00, Mgr. Pavlína Jalůvková

Anotace

ORIG EN

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.