Fig. 7
From: Non-monochromatic whistler waves detected by Kaguya on the dayside surface of the moon
The magnitude of the magnetic field ∣B∣ and the components B x , By, B z observed by Kaguya (black) and ACE (gray, shifted to the Kaguya position using the solar wind speed), the dynamic spectrum for B y component, red (blue) bars which indicate the magnetic connection of the spacecraft to the dayside (nightside) surface of the moon, and the energy-time (E−t) spectrograms (adapted from figure 2 of Saito et al., 2008) obtained on February 27, 2008 by the MAP-PACE. (a) IEA instrument whose sensor was directed away from the moon, showing the direct observation of the solar wind at ∼0.6 keV between 12:40 and 13:30 UT, and (b) IMA instrument which was looking into the dayside surface of the moon, showing the protons coming from the moon (marked with the blue bar above the spectrogram). Panels (c) and (d) show the solar zenith angle at Kaguya, and position of the spacecraft in ME coordinate system, respectively.