The Center of Our Galaxy Contains a Very Intense Source

question 26

Multiple Choice

The center of our galaxy contains a very intense source of radio and X-ray radiation named Sgr A*. What is it about this source that supports the idea that the radiation comes from a black hole?

• A) The radiation is strongly blueshifted, indicating that the object is collapsing.
• B) The radiation is strongly redshifted indicating that the object is growing.
• C) The radiation is coming from an incredibly small object.
• D) Radio waves can only be produced by matter orbiting a black hole.
• E) Only radiation from a black hole could penetrate the giant molecular clouds between Sgr A* and Earth.

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Definitions:

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