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  • 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.
  • 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. (en)
  • Popisujeme novou metodu realistického, plně obecně relativistického modelu a počítačového kódu optického zobrazování v silném, sféricky symetrickém gravitačním poli. Klasická teoretická analýza optického zobrazování pro pozorovatele v blízkosti Schwarzschildovy černé díry byla rozšířena na černoděrové prostoročasy s repulsivní kosmologickou konstantou (Schwarzschildovy-de Sitterovy prostoročasy). V naší simulaci uvažujeme nulové geodetiky procházející pozicí pozorovatele jak za, tak před bodem obratu. Simulace bere v úvahu efekty posuvu frekvence i změny intenzity. Náš kód generuje statické obrázky oblohy pro statického pozorovatele a videosimulaci volně padajícího pozorovatele. Pro dosažení vysokého výkonu a rychlosti programu používáme techniky paralelního programování. Zajímavým efektem je odlišná závislost zdánlivé úhlové velikosti černé díry na kosmologické konstantě pro pozorovatele nad a pod fotonovou orbitou. (cs)
Title
  • A Virtual Trip to the Schwarzschild-de Sitter Black Hole
  • Virtuální výlet k Schwarzschildově-de Sitterově černé díře (cs)
  • A Virtual Trip to the Schwarzschild-de Sitter Black Hole (en)
skos:prefLabel
  • A Virtual Trip to the Schwarzschild-de Sitter Black Hole
  • Virtuální výlet k Schwarzschildově-de Sitterově černé díře (cs)
  • A Virtual Trip to the Schwarzschild-de Sitter Black Hole (en)
skos:notation
  • RIV/47813059:19240/06:#0001941!RIV09-MSM-19240___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM4781305903)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 463906
http://linked.open...ai/riv/idVysledku
  • RIV/47813059:19240/06:#0001941
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • black hole, computer code, gravitational lensing, Schwarzschild-de Sitter (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [DF1CD6067757]
http://linked.open...v/mistoKonaniAkce
  • Berlín
http://linked.open...i/riv/mistoVydani
  • Singapore
http://linked.open...i/riv/nazevZdroje
  • Eleventh Marcel Grossmann Meeting on General Relativity Berlin
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Stuchlík, Zdeněk
  • Čermák, Petr
  • Hledík, Stanislav
  • Truparová, Kamila
  • Bakala, Pavel
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
http://purl.org/ne...btex#hasPublisher
  • World Scientific
https://schema.org/isbn
  • 978-981-283-426-3
http://localhost/t...ganizacniJednotka
  • 19240
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