Question

Part 1A: Suppose an object is found to emit X-rays that vary in brightness in 10-minute time intervals. What is the maximum size of this region in meters? HINT: Recall the method for placing a limit on the size of an emitting region is just related to distance = velocity x time. Here, for light, velocity = c.

Part 1B:Suppose you measure the total mass of this region to be 10⁶ solar masses (i.e. mass= 10⁶ x the mass of the Sun). Use this mass and your answer to part (3a) to calculate the escape velocity from this region.

part 1C:Based on your answer to 3b (no credit for random guesses) is this object a black hole? Why or why not?

Answer 1

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