Although Theory Says a Massive Black Hole with an Accretion

question 18

Multiple Choice

Although theory says a massive black hole with an accretion disk should be emitting X-rays,many black holes emit:

• A)mostly in the infrared.
• B)only in the visible.
• C)mainly in the gamma.
• D)virtually no radiation at all.
• E)equally across the entire electromagnetic spectrum.

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