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EHT Collaboration
At the time, all ingredients of the process were speculative, but the new observations confirm the Blandford-Znajek idea. âWhat we see in our image is ordered polarization in a spiral shape,â said Issaoun, who was involved in analyzing the polarization measurements. âAnd the shape of the magnetic field is also spiral ⦠which means itâs able to launch a jet.â
âIâm very chuffed,â Znajek, now a retired Cambridge city councilor, said by email.
Moreover, the new observations point to one of two rival versions of the Blandford-Znajek process that have been developed and explored in hundreds of computer simulations in recent decades, known as the MAD and SANE jet-launching scenarios. These competing ideas paint opposing pictures of a black holeâs milieu and, in particular, the origin and strength of its magnetic field.