Giant Magnetic Loop Stretches Between Two Stars

Superposed image of a partial radio loop on Algol's inner binary. The optical-radio registration is within 0.3 mas. Credit: University of Iowa

Using a collection of radio telescopes, astronomers have found a giant magnetic loop stretched outward from one of the stars making up the famous binary star system Algol, located in the constellation Perseus. "This is the first time we've seen a feature like this in the magnetic field of any star other than the Sun," said William Peterson, of the University of Iowa.
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