NASA Black Hole Visualisation

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The discussion centers around the visibility of blueshift effects in a simulation of a black hole's event horizon. Participants express curiosity about whether the expected blueshift of background light is represented in the simulation or if their expectations are incorrect. Specifically, there is a mention of a significant blueshift exceeding 43 times, raising questions about how such a shift could be visually perceived. The conversation suggests that the simulation may have omitted this effect to focus on the warping of the background sky's geometry, leading to uncertainty about how these visualizations incorporate the blueshift phenomenon. Overall, the dialogue highlights the complexities of visualizing relativistic effects near black holes.
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I was expecting to see the background light being blueshifted enough to be visibly changing color. Is the effect just not visible in the simulation or is my expectation wrong? In the case of crossing the event horizon the caption mentions a blueshift in excess of 43 but how is that visible? Perhaps they left out the effect to allow people get a visual feedback on how the "geometry" of the background sky is warped?
 
Filip Larsen said:
Is the effect just not visible in the simulation or is my expectation wrong?
Anyone?
 
Should definitely see blueshift from in front (so long as not obscured by the black hole shadow...). I don't know how they've incorporated this into the visualizations.
 

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