What Mechanism Appears to Produce the Double-Radio Sources Seen in Intergalactic

question 92

Multiple Choice

What mechanism appears to produce the double-radio sources seen in intergalactic space?

• A) two oppositely directed jets of matter, ejected from a small source
• B) two radio galaxies orbiting each other much like two binary stars
• C) radio-bright galaxy with a dark absorbing disk edge-on to Earth, splitting the source into two as seen from Earth
• D) two black holes orbiting around a small but massive galactic nucleus

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