...The IceCube detector became operational at the South Pole in 2010. Largely funded by the National Science Foundation, as well as contributions from around the world, IceCube was built to detect high-energy neutrinos. It is the largest detector of its kind.
To build it, workers drilled 86 holes in the ice, each 1½ miles deep, and spread a network of 5,160 light sensors over a grid of 1 cubic kilometer. It's operated by a team based at the University of Madison-Wisconsin, but the IceCube collaboration itself includes 300 scientists and 49 institutions.
In 2013, IceCube discovered the first neutrinos with higher energy from beyond our galaxy. Since then, it has observed 82 high-energy neutrinos but wasn't able to trace them.
IceCube monitors the sky and detects about 200 neutrinos per day, but most are low-energy, created when cosmic rays interact with Earth's atmosphere.
On September 22, that changed when the neutrino dubbed IceCube-170922A was detected beneath the Antarctic ice cap. It had an energy of 300 trillion electron volts.
When a neutrino interacts with the nucleus of an atom, it creates a secondary charged particle, producing a cone of blue light that can be detected and mapped by IceCube's light sensor grid and traced back to its source...
https://www.cnn.com/2018/07/12/world...ray-discovery/
Reply With Quote
Originally Posted by Billy_Rightwing
