Ultra-high energy cosmic rays from low-luminosity GRBs

Cosmic rays in the energy range of 1E17 to 3E20 eV havebeen measured by the Auger and TA arrays, whose compositionappear to include a significant fraction of heavy elements.An explanation for the energy input rate, the spectrum andthe composition is a matter of current debate. Here, aftera review of the cosmic ray observations, I discuss a modelfor the production of this radiation in low-luminosity GRBs,followed by their propagation through intergalactic spacebefore reaching Earth.

Prof. Peter Meszaros
Penn State Univ.
KIAA-PKU Auditorium
Zhuo Li
Thursday, March 29, 2018 - 4:00pm to 5:00pm