Summary:
- Astronomers have finally solved the mystery behind "ghostly radio relics" - faint, diffuse radio emissions found in galaxy clusters.
- These radio relics are believed to be caused by shockwaves from galaxy cluster collisions, which accelerate particles to nearly the speed of light, producing the radio emissions.
- The new study provides a comprehensive model to explain the physics behind these radio relics, helping us better understand the energetic processes occurring in the largest structures in the universe.