The source of magnetic fields has long been debated. New research offers clues on their origins. It isn’t just your refrigerator that has magnets on it. The earth, the stars, galaxies, and the space between galaxies are all magnetized, too. The more places scientists have looked for magnetic fiel
Columbia researchers have found that magnetic fields across the universe may originate in turbulent plasma. Their study demonstrates that these plasmas, present in various environments, can spontaneously create and amplify magnetic fields, revealing the process through which magnetic fields can stretch over immense distances.It isn’t just your refrigerator that has magnets on it. The earth, the stars, galaxies, and the space between galaxies are all magnetized, too.
Their simulations showed that, in addition to generating new magnetic fields, the turbulence of those plasmas can also amplify magnetic fields once they’ve been generated. This helps explain how magnetic fields that originate on small scales can sometimes eventually reach to stretch across vast distances.
“This new research allows us to imagine the kinds of spaces where magnetic fields are born: even in the most pristine, vast, and remote spaces of our universe, roiling plasma particles in turbulent motion can spontaneously give birth to new magnetic fields,” Sironi said.
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