If someone found a black hole, who would you call to test and verify that it really was one?

If someone found a black hole, who would you call to test and verify that it really was one?
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1 Answer

Answer :

Any astronomer or astrophysicist with access to sensitive enough instruments to measure its effects should be able to confirm its presence. We can’t see into a black hole, but we definitely can see its effects. We can observe its gravitational effects and thu discern its mass. And we can see the radiation given off by the energy generated by matter being drawn into it as that material crosses its event horizon. We have observed numerous black holes in this fashion. There is a super-massive one at the center of our own Milky Way Galaxy.
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