High-energy particles that bombard the Earth from the depths of space could originate from blazars, new research suggests.
. What could launch these particles with so much force that they travel billions of light-years has, however, remained a mystery.
Some of the processes and events that launch cosmic rays also blast out astrophysical neutrinos, and these 'ghost-like' particles could be used as 'messengers' to solve this puzzle, a team of astrophysicists believes. This image taken by NASA's Wide-field Infrared Survey Explorer shows a blazar - a voracious supermassive black hole inside a galaxy with a jet that happens to be pointed right toward Earth.
The team used this data to confirm that the location of blazars corresponded with the direction of astrophysical neutrinos often enough that this association couldn't be put down to chance alone, providing the first solid evidence of the connection between astrophysical neutrinos and blazars.
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