In Principle, If Astronomers Were in the Vicinity of a Schwarzschild

question 55

Multiple Choice

In principle, if astronomers were in the vicinity of a Schwarzschild black hole, how could they measure its mass?

• A) Put a satellite in orbit around it and measure its period.
• B) Measure the gravitational redshift from its radiation.
• C) Use charged particles to measure the strength of its magnetic field.
• D) Measure the speed necessary to pass through the ergoregions and emerge.

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Reasons given for not purchasing a product or service based on financial constraints or budget considerations.

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