Most binary systems with an invisible companion contain a large, bright star and a small, dim star hidden by the light of its la
rger companion. However, in some binary systems, the unseen companion may be a black hole instead of a small star. One of the most likely black hole candidates in a binary system is an object called Cygnus X-1. If you were an astronomer trying to prove that Cygnus X-1 is a black hole, which of the following observations would provide evidence in support of your claim?CHECK ALL THAT APPLYA. Cygnus X-1 has a mass one-tenth that of the Sun.B. Cygnus X-1 produces a large amount of X-ray emissions.C. Cygnus X-1 produces no X-ray emissions.D. Cygnus X-1 has a diameter less than 300 kilometers.E. Cygnus X-1 has a mass of 10 solar masses.F. Cygnus X-1 has a diameter much greater than 300 kilometers.
