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Mind bending. It makes our attempts to describe such things using words on PF seem so futile.
https://apod.nasa.gov/apod/ap210416.html
https://apod.nasa.gov/apod/ap210416.html
My impression is that there is no attempt to show time or actual orbits. The objects in the animation never really merge or spiral inward. The purpose was to show optical effects.berkeman said:Also, I looked but could not find if the speed of the animation is real-time, or sped up. Did anybody see if they mentioned that?
The holes aren't that close. The center to center distance is something like ten times the diameter of the inner bright ring around the larger hole. That ring is at the photon sphere, so the holes are something like thirty times the Schwarzschild radius of the larger hole distant from one another (I know they're Kerr holes, but back of the envelope). I don't think approximating the orbits as Newtonian is completely crazy at this level of hand waving, and that gives an orbital period of several hours. So definitely sped up.anorlunda said:My impression is that there is no attempt to show time or actual orbits. The objects in the animation never really merge or spiral inward. The purpose was to show optical effects.
The "Wonderful BH animation" on APOD refers to the featured animation on NASA's Astronomy Picture of the Day website, showcasing a simulation of a black hole's accretion disk and jets.
The animation was created using data from the Event Horizon Telescope and simulations from the BlackHoleCam team. The data was then processed and combined to create a realistic visualization of a black hole's accretion disk and jets.
The animation provides a visual representation of the complex and dynamic behavior of black holes, which are one of the most mysterious and fascinating objects in the universe. It also helps scientists and the general public better understand the physics behind black holes.
While the animation is not a direct representation of any specific black hole, it is based on real data and can be used by scientists as a tool for further research and study of black holes.
Yes, the animation is based on real data and simulations, making it a scientifically accurate representation of a black hole's accretion disk and jets. However, it should be noted that the visuals are an artist's interpretation and not an actual photograph of a black hole.