Supernova explosions have long been considered a potential source of the most energetic cosmic rays reaching Earth. Scientists have doubts about whether these extreme stellar events can produce the most powerful particles ever detected. The complexity of galactic magnetic fields makes tracing the origin of these particles difficult.
Recent simulations suggest supernovas may be responsible for these ultra-high-energy particles. The models indicate a short window after stellar collapse where conditions are ideal. During this time, particles can be accelerated to extreme levels.
Scientists have been observing the skies for over a century, seeking the phenomena that generate cosmic rays. These charged particles are deflected by interstellar magnetic fields, hindering direct origin tracing. Researchers seek indirect clues, such as physical signatures in supernova remnants, to solve the mystery.