Study on plasma waves and electron density profile around the moon observed by KAGUYA in the solar wind

The moon has basically no intrinsic magnetic field and atmosphere, and plasma cavity called “Lunar Wake”´ is created just behind the moon in the solar wind. Electrons which collided with moon surface are supposed to be carried toward downstream region of solar wind forming unique electron density distribution around the moon. In the present paper, we study electron density profile around the moon at nominal altitude of KAGUYA (~100km) in the solar wind controlled by the parameters such as IMF direction and solar wind velocity.