Fig. 3
From: Sub-ion-gyro scale magnetic field compressions generated by the solar wind interaction with the moon
High-time resolution magnetic field and ion momenta of short-period magnetic enhancement on 1 January 2008. a The magnitude, b the azimuthal angle and c the inclination of the magnetic field observed by MAP-LMAG at a sampling frequency of 32Â Hz during the period from 13:28 to 13:30 on 1 January 2008. The magnetic field enhancement is significant from 13:29:20 to 13:29:27 with no directional change. d Magnetic connection between Kaguya and the lunar surface estimated from linear extrapolation of the magnetic field line at Kaguya. The magnetic field line at Kaguya did not connect to the lunar surface during the magnetic field enhancement. e Ion densities observed by IEA (pink) and IMA (orange) sensors of MAP-PACE onboard Kaguya, looking zenith and nadir directions, respectively, combined to obtain the total ion density (red). f \(x_{{SSE}}\), g \(y_{{SSE}}\), h \(z_{{SSE}}\) components of the ion velocity in SSE coordinates and (i) the ion bulk speed |V|. During the magnetic enhancement in a, only the ion component from the nadir direction (orange) fluctuated