The Magnetic Field of the Galaxy

question 29

Multiple Choice

The magnetic field of the galaxy

• A) is stronger than the magnetic field of the sun.
• B) traps cosmic rays in the disk of the galaxy.
• C) creates the spiral density waves that initiate star formation.
• D) forces the halo stars to follow highly inclined orbits.
• E) produces 21-cm radiation that allows us to map the spiral arms.

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