30 Aug '15, 5pm

Gigantic Antarctic Instrument, IceCube, Finds Mysterious Cosmic Neutrinos - IEEE Spectrum via @IEEESpectrum

Since neutrinos aren't affected all that much by even the densest matter, they can escape from the core of a supernova well before the shock wave from the inside of the collapsing star makes it to the outside and releases any photons. By detecting this initial neutrino burst, we can get a warning of as long as a few hours before a supernova would be visible from Earth. Since neutrinos aren't affected at all by magnetic fields and therefore travel in straight lines, they can help us pinpoint the origin of ultra high energy cosmic rays, which are affected by magnetic fields and therefore can follow winding paths. We know that some cosmic rays come from supernovae, but many of them don't, and we're not sure where the rest of them originate. With energies over a million times greater than the Large Hadron Collider, it would be nice to know where they come from. The ratio betwe...

Full article: http://spectrum.ieee.org/tech-talk/aerospace/astrophysics...

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