Question

If 2 black hole will fuse with each other what we will call that?​

Answer 1

If two black holes get too close, these spheres will merge and form one larger sphere. After the merger, the sphere will wobble for some while until it settles down, which is called the “ringdown.” Both the merger and the ringdown produce gravitational waves.

Answer 2

Answer:

binary black hole (BBH) is a system consisting of two black holes in close orbit around each other. ... However, in the event that a pair of black holes were to merge, an immense amount of energy should be given off as gravitational waves, with distinctive waveforms that can be calculated using general relativity.

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