What Is Indicated by the Fact That the Lobes of a Radio

question 53

Multiple Choice

What is indicated by the fact that the lobes of a radio galaxy radiate synchrotron radiation?

• A) High-speed electrons are spiralling through a magnetic field.
• B) The source of the radio jets must be a black hole.
• C) The source of the radio energy is rotating rapidly.
• D) The central galaxy must be a giant elliptical galaxy.