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A giant star of 12 solar masses orbits an invisible companion every 16 years. The average...

A giant star of 12 solar masses orbits an invisible companion every 16 years. The average distance between the 2 objects is 15 au. Find the mass of the invisible companion and then comment on whether or not it could be a black hole.

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Answer #1

since the companion is an invisible , it might absorb all electromagnetic energy incident on it. So it is a black body

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