Figure 4From: Observing supermassive black holes in virtual realitySnapshots of the tracer particles in the advection simulation. Left panel: initial distribution of particles inside the initial torus. Middle panel: snapshot of the advection HARM2D simulation at \(t=2000~r_{\mathrm { g}}/c\). Right panel: later snapshot at \(t=4000~r_{\mathrm { g}}/c\). The two times correspond to the advection simulation time, i.e., frames 4600–7600 in the resulting movie. The blue square represents the initial position of the tracer particle used for the camera. The blue curve shows the trajectory corresponding to this tracer particleBack to article page