Electron acceleration and ion deceleration observed over a magnetic anomaly. (a) Pitch angle distribution of electrons. Pitch angle 0 deg. is the parallel direction toward the Moon. (b) (c) E-t spectrograms of electrons and ions in the period when ion deceleration and electron acceleration were observed. Blue and orange arrows show before and after acceleration/deceleration, respectively. (d) Magnetic field intensity and the altitude of Kaguya.