Speaker
Zhang Bing Theodore
(Institute of high energy physics, CAS)
Description
We investigate the propagation of ultraheavy (UH) nuclei as ultrahigh-energy cosmic rays (UHECRs). We show that their energy loss lengths at $\lesssim300$~EeV are significantly longer than those of protons and intermediate-mass nuclei and that the highest-energy cosmic rays with energies beyond $\sim100$~EeV, including the Amaterasu particle, may originate from such UH-UHECRs. We derive constraints on the contribution of UH-UHECR sources and find that they are consistent with energy generation rate densities of UHECRs from collapsars and neutron star mergers.
Primary author
Zhang Bing Theodore
(Institute of high energy physics, CAS)
Co-authors
Prof.
Kohta Murase
(Penn State University)
Dr
Mukul Bhattacharya
(University of Wisconsin-Madison)
Dr
Nick Ekanger
(Virginia Tech University)
Prof.
Shunsaku Horiuchi
(Virginia Tech University)
