Mystery of coronae around supermassive black holes deepens

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Researchers have used observations from the ALMA radio observatory to measure, for the first time, the strength of magnetic fields near two supermassive black holes at the centers of an important type of active galaxies. Surprisingly, the strengths of the magnetic fields do not appear sufficient to power the 'coronae,' clouds of superheated plasma that are observed around the black holes at the centers of those galaxies.

from Latest Science News -- ScienceDaily https://ift.tt/2US4QRv

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