Plasma jets

Artist's impression of a blazar – an active core of a galaxy, powered by a supermassive black hole and emitting a powerful jet of plasma. Credit: M. Weiss/CfA

The source of the most energetic neutrino ever discovered may be surprising

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Research by the KM3NeT collaboration suggests that the extreme neutrino detected in the Mediterranean Sea in 2023 did not come from a single event, but rather from a diffuse flux of particles generated in a population of active galactic nuclei known as blazars.
A new image of the galaxy OJ 287 reveals for the first time the ribbon-like structure with the sharp curve of the plasma jet ejected from its center. Credit: Dr Efthalia Traianou, Heidelberg University, IWR

What lies at the heart of OJ 287? New image reveals the secret of merging black holes

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Astronomers have imaged the twisted jet structure in the core of the galaxy OJ 287 for the first time – evidence of two supermassive black holes in the process of merging.
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