Researchers from RIKEN/iTHEMS and JAXA have used observations from the ALMA radio observatory in northern Chile to measure, for the first time, the strength of magnetic fields near two supermassive black holes at the center of an important group 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.

RIKEN press release