If a Seyfert Galaxy's Nucleus Varies in Brightness on the Timescale

question 12

Multiple Choice

If a Seyfert galaxy's nucleus varies in brightness on the timescale of 10 hours, then approximately what is the size of the emitting region?

• A) 20 AU
• B) 30 AU
• C) 50 AU
• D) 70 AU
• E) 120 AU

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Definitions:

Common Cause

A principle or factor that is shared by all members of a group, leading to a particular effect or outcome.

Dangerous Game

Activities or situations that involve a high risk of harm or injury, often undertaken for thrill or challenge.

Death Darer

An individual who acts in ways that significantly increases the risk of death, often driven by underlying psychological issues.

Deaths Occur

The event of a living organism ceasing to live.