Key facts
- Jupiter's bow shock accelerates electrons to relativistic energies.
- Electrons reach speeds of at least 1 MeV.
- Data analyzed is from NASA's Juno spacecraft.
- The findings may provide insights into cosmic ray origins.
A new analysis of data from NASA's Juno spacecraft indicates that Jupiter's bow shock is not merely deflecting the solar wind but is also functioning as a potent particle accelerator. This process propels electrons to relativistic energies, reaching at least 1 MeV. These findings are significant as they offer potential clues regarding the origins of cosmic rays, suggesting that planetary environments like Jupiter's can play a role in their generation.