A pulsar is a special type of star that emits regular pulses of a broad range of

Question

A pulsar is a special type of star that emits regular pulses of a broad range of electromagnetic radiation from radio waves to X-rays simultaneously. Which of the following statements best describes how the pulses from a distant pulsar would be detected by a group of telescopes on a satellite in orbit around the Earth?

Question options:

A)

B)

C)

Very cold clouds of hydrogen gas are thought by astronomers to be where stars might start forming. What type of telescope from those listed below would be best to use to search for these very cold clouds of gas?

Question options:

A)

B)

C)

D)

A)

The radio wave pulses and X-ray pulses would be detected at the same time.

B)

The radio wave pulses would be detected before the X-ray pulses.

C)

The radio wave pulses would be detected after the X-ray pulses.

Explanation / Answer

As the radio waves take longer time to get detected, the x-rays are first detected and the answer is C.

A. Gamma Ray telescopes are used for the detection of the cold gas clouds.

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