Question:
If you wanted to determine the mass of a black hole in an X
Last updated: 6/21/2023
![If you wanted to determine the mass of a black hole in an X](https://media.kunduz.com/media/sug-question-candidate/20211222170924013627-3617185.jpg?h=512)
If you wanted to determine the mass of a black hole in an X ray binary what would be easiest for you measure O a The radius of the event horizon O b The orbital distance period and mass of the companion star Oc The size of the companion star Od The orbital speed of the black hole around the centre of mass