5 ms·

Does that confirm the size of the black hole, or is it just a "strong hint"?

• andrewflnr 2y ago
  Fair, I have no idea if it confirms the size, though maybe the specific speed of the gas helps with that. Mostly it's evidence that there is a black hole, but it's not supermassive, and a stellar-mass one probably wouldn't have enough effect to be noticed.
  • saagarjha 2y ago
    You can determine the mass of something by measuring the time it takes for an orbit around it, yes.
    • andrewflnr 2y ago
      You need the orbital radius, too.
      • saagarjha 2y ago
        Yep. You can get both from observations of the orbiting object.