Ultra-high-energy cosmic radiation
type: Concept
contributor: AAS Frey.Katie Admin
modified: 2020-11-04T21:41:58.592Z
modified: 2020-11-04T21:42:11.607Z
alternative label: Ultra high energy cosmic rays
alternative label: Ultra high energy cosmic radiation
alternative label: Ultra-high-energy-cosmic rays
broader: Cosmic rays
definition: A particle belonging to the most energetic population of cosmic rays with an energy above ~10^20 electron-volts. The UHECRs constitute a real challenge for theoretical models, because their acceleration requires extreme conditions hardly fulfilled by known astrophysical objects.

Cosmic rays
type: Concept
narrower: Ultra-high-energy cosmic radiation