Plasma Waves near the Electron Cyclotron Frequency in the Near-Sun Solar Wind - Malaspina,DM; Halekas,J; Bercic,L; Larson,D; Whittlesey,P; Bale,SD; Bonnell,JW; de,Wit TD; Ergun,RE; Howes,G; Goetz,K; Goodrich,K; et al. (ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020)