Black hole flares are caused by breaking and reconnecting magnetic field lines, according to new high resolution simulations - Universe Today by AndyTomaswick
had been a mystery to science. That mystery was solved recently by a team of researchers that used a series of supercomputers to model the details of black holes’ magnetic fields in far more detail than any previous effort. The simulations point to the breaking and remaking of super-strong magnetic fields as the source of the super-brightScientists have known that black holes have powerful magnetic fields surrounding them for some time.
Magnetic fields unsurprisingly played a major role in those physics. But more importantly, they played a critical role in developing flares. Specifically, flares formed when magnetic fields broke apart then rejoined back together. The magnetic energy unleashed by these processes supercharges photons in the surrounding medium, and some of those photons get ejected straight into the black hole’s event horizon, while others get ejected out into space in the form of flares.
Simulated black hole with magnetic field lines seen in green. Where they meet in specific patterns is sometimes the source of a flare.Simulations showed how the breaking and making of magnetic field connections that were invisible at previously available resolutions. Dr. Ripperda and his colleague’s image had 1000 times the resolution of any previously available black hole simulation.
With high resolution came greater understanding. The new simulations accurately modeled how the magnetic field process around the event horizon works. First, the material collected in the accretion disk migrates towards the black hole’s “poles.” Migrating charged material like that is sure to affect magnetic field lines, which attempt to move with it. Part of that movement process causes some of the magnetic field lines to break and potentially reconnect with a different field line.
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