Interactive Accretion Disk in Kerr metric

Computer-generated images of black holes are invaluable tools for science, teaching, and entertainment. Nevertheless, up until recently, real-time imagery of situations with extreme space-time curvature were not possible. The paper Interactive Black-Hole Visualization by Verbraeck and Eisemann changed this. <br/>This work follows their line of...

Imaging a Kerr Black Hole

The observations of the Event Horizon Telescope led to the first mages of a black hole, an object with so much gravity that not even light can escape it. These images remain fuzzy but clearly show the shadow of a black hole with a bright disk and will only improve in quality over time. We want to be able to deduce, from the images, the following...

Gravitational Lensing: Black Hole Imaging

A black hole is an object in space where the pull of its gravity is so strong<br/>that no light can escape. This notion gives rise to the phenomenon called<br/>gravitational lensing which is the effect where light is being bent by a massive<br/>object, in our case a black hole. With these two concepts in mind we are<br/>able to formulate the...

A Fast General Relativity Raytracing Algorithm: Visualising Kerr Black Holes using an Adaptive Interpolation Grid

We present a fast and accurate general relativity raytracing algorithm to visualise the distortion of space around a fast spinning Kerr black hole, as seen from a position nearby. Different parallel numerical ray integration methods were tested to solve this problem. An adaptive grid of rays, stored in efficient data structures with fast access,...