Monster black hole might have executed a magnetic 'flip'

A black hole might have reversed its magnetic field right before our eyes. The story begins with a galaxy known as 1ES 1927+654, which briefly ceased X-ray emissions for a few months, then resumed and increased. So far, the potential black hole observations represent a unique situation visible from 236 million light-years away.  "This event marks the first time we've seen X-rays dropping out co...

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