Comparison of Anomalous and Galactic Cosmic Ray Oxygen at 1 au during 1997-2020

Shuai Fu, Lingling Zhao, Xiaoping Zhang +2

Using quiet-time measurements of element oxygen within the energy range 7.3--237.9 MeV nuc${}^{-1}$ from the ACE spacecraft at 1 au, we compare the energy spectra and intensities of…