Cosmic Magnetism: Origin and Evolution

“Magnetism is one of the four fundamental forces. However, the origin of magnetic fields in stars, galaxies and clusters is an open problem in astrophysics and fundamental physics.”
 
QUESTION 1.
“When and how were the first fields generated?”
 
QUESTION 2.
“Are present-day magnetic fields a result of dynamo action, or do they represent persistent primordial magnetism?”
 
QUESTION 3.
“What role do magnetic fields play in turbulence, cosmic ray acceleration and galaxy formation?”

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