Tracing a Neutrino Ghost to Distant 'Shadow Blaster' Galaxy
6 Articles
6 Articles
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der Standard DE2021 a neutrino with extremely high energy was measured. So far attempts to find its source failed. Now there is a hot trace
A Ghost Particle from Cosmic Noon Points to a Hidden Class of Neutrino Factory
At 18 minutes past six in the evening on 22 September 2021, a single particle slammed into the ice beneath the South Pole. The IceCube detector logged it as IC 210922A, a track of light racing through a cubic kilometre of frozen Antarctic water. It carried roughly 750 trillion electronvolts of energy, far more than anything a particle accelerator on Earth can muster, and the instrument was more than 90 per cent confident it had come from outside…
Researchers have tracked a single high-energy neutrino to an unimaginable distance. What they found at the end of that path was an ancient star factory from the infancy of the universe. Every second, trillions of neutrinos fly through your body without you noticing a thing. These “ghost particles” have hardly any mass, no electrical charge […] More science? Read the latest articles on Scientias.nl.
Tracing a Neutrino Ghost to Distant “Shadow Blaster” Galaxy - Gemini North telescope on Maunakea helps uncover strongest evidence yet that distant star-forming galaxies contribute to the production of one of the Universe’s most mysterious ghost particles
A team of astronomers has identified a remarkably bright, gravitationally-lensed, star-forming galaxy as the likely source of the high-energy neutrino event IC 210922A, detected by the IceCube Neutrino Observatory in 2021. The galaxy, nicknamed “Shadow Blaster,” is located about 11 billion light-years away, providing the most concrete observational evidence yet that populations of distant star-forming galaxies play a significant role in producing high-energy cosmic neutrinos.
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