Most powerful intergalactic neutrinos ever detected
Breaking news: Today The Bad Astronomer posted his first article ever with a sensationalist title. Neutrinos are on their way to board and plunder the Earth.
Ultra-high-energy neutrinos detected, almost certainly coming from another galaxy
The neutrinos had about 1 PeV of energy, which is quite a lot for a subatomic particle, and gargantuan for a neutrino, as Phil Plait put it:
I am not sure how unlikely this event is, actually. On one hand, neutrinos are much more difficult to detect, which makes it damn unlikely to pick particles like this, on the other hand neutrinos have almost no interaction with other particles during their interstellar trip, which could allow them to retain their speed and therefore there could be more of them.
Still, if memory serves me right, the other ultra-high-energy particles that we've detected were from our galaxy (correct me if I am wrong), and this one is actually from another galaxy (99% certain). :wtf:
Strangely, this made me more hopeful for intergalactic communication. I don't know what most of this means, and even worse, the particles are coming from a supermassive black hole, one a civilization will never match the energy of, but then the sheer chance of picking a stray neutrino (of all particles) from another galaxy passing right through the Earth with that kind of energy is so unlikely, that my hopes of two civilizations reaching each other suddenly grew a tiny bit. :)
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