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Multi-Messenger Observations Reveal Cosmic Particle Accelerator

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When an unfortunate star in the constellation Delphinus came too close to the supermassive black hole at the centre of its home galaxy, it was stretched more and more by the enormous tidal forces until it was finally disrupted. Half of the stellar debris was flung back into space, while the remaining part formed a rotating accretion disk from which two strong outflows of matter shoot up and down. The system acts as a powerful natural particle accelerator. Scientists have caught a single neutrino hurled towards Earth by the system. More at In einer namenlosen Galaxie im Sternbild Delfin ist ein Stern, der dem supermassereichen Schwarzen Loch im Zentrum zu nahe gekommen ist, von den enormen Gezeitenkräften des Massemonsters mehr und mehr in die Länge gezogen worden, bis er schließlich zerrissen worden ist. Die Hälfte der Trümmer wurden ins All zurückgeschleudert, aus dem Rest bildete sich eine rotierende Akkretionsscheibe, von der zwei

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