Cygnus X-1 and LMC X-3 Are Binary Systems with One

question 81

Multiple Choice

Cygnus X-1 and LMC X-3 are binary systems with one component not visible.What must the unseen component masses be for astronomers to be certain that these systems contain a black hole?

• A)less than 0.4 solar masses
• B)between 0.4 and 1.4 solar masses
• C)less than 5 solar masses
• D)more than 5 solar masses

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