Binary Black Holes Have Much Higher Masses Than Their White

question 23

Multiple Choice

Binary black holes have much higher masses than their white dwarf and neutron star counterparts,which should lead to a much stronger emission of gravitational waves.What is the most reasonable explanation for why we have not yet observed gravitational waves from black-hole binaries?

• A)Black hole binaries are very rare,and wave detection is difficult.
• B)The waves disappear into the black hole.
• C)The waves must be coming from very far away and haven't reached us yet.
• D)Our current theories must be wrong.

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