The most energetic "ghost particle" neutrino ever detected may have been blasted at Earth by blazars, suggesting that these events and their black hole engines are powerful cosmic particle accelerators.

Most powerful 'ghost particle' ever may have come from a cosmic particle accelerator fed by a black hole

Source: space
Source Link: https://www.space.com/astronomy/black-holes/most-powerful-ghost-particle-ever-may-have-come-from-a-cosmic-particle-accelerator-fed-by-a-black-hole