UP: Four-dimensional Ray Tracing in a Previous: Realization

Applications

Industrielle an application is naturally no longer conceivable in our millenium. Within the range research and teachings I see however the possibility of making the mathematically quite requirementful realizations of the general relativity theory accessible a broader public.

Thus the computed films were offered e.g. to the German museum and the Second Channel of German Television.

As concrete example of use a video tape recording is attached to the work, on which some the film sequences counted are to be seen:

• rotary neutron star with Akkretionssaeulen: The Akkretionssaeulen consists of a luminescent gas, which falls freely falling on the magnetic poles of the star. By the gravitative light diverson the columns appear distorted. The different colouring is based on a combination of gravitation red shift and by the high speed of caused Doppler shift.

• Fast rotary neutron star: Here a physically correct numerically computed Metrik was used, in order to compute the photon courses. By the fast rotation (approx. 0.5ms scan time of a star with 11km radius) the rays of light, become mitgefuehrt``.

• Emergence of an Einstein ring. Massif if a Object, e.g. a galaxy or a black hole stands exactly on the line between a star and the observer, then the star lying behind can be called as ring, illustrated, Einsteinring``, by its gravitation lens effect. In order to make this effect clear, a black hole before a picture of Einstein runs by in this film sequence.

• Instructional film for the German museum Munich (duration: approx. 25min.). This, in co-operation with the German museum provided film is to be seen there on in May 92 the again opened exhibition, Astronomie``.

The program system was developed as ' play meadow '. I.e. it can be integrated by its modular structure easily into different applications. At present it is inserted at Institut for theoretical astrophysics Tübingen use several projects:

• Visualization and computation of spectra of a Akkretionsscheibe around a resting black hole (Schwarzschildmetrik), as well as around a rotary black hole (Kerrmetrik).
• Visualization of the gravitational collapse of a reciprocal effect-free dust cloud.

UP: Four-dimensional Ray Tracing in a Previous: Realization