An Etymological Dictionary of Astronomy and Astrophysics

An astrophysical source which accelerates → cosmic rays up to energies of several petaelectronvolts. For example, in the → Galactic center, cosmic ray → protons reach such energies. The source of such particles is a matter of research (→ HESS collaboration, 2016, Nature 531, 476).

See also: PeVatron, from PeV (→ peta-

• → electronvolt); + euphonic affix -a-; + → -tron.