Physics · Gravitational Waves
Which of the following cosmic events is a well-established source of higher-frequency gravitational waves detectable by ground-based interferometers?
- 1Expansion of the cosmic microwave background
- 2Merger of stellar-mass black hole pairs✓
- 3Steady rotation of a uniform sphere
- 4Orbits of supermassive black holes
Correct answer
Merger of stellar-mass black hole pairs
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