The global structure of wake field behind an unmagnetized object in the solar wind is studied by means of a 2.5-dimensional full-electromagnetic Vlasov simulation. The interaction of a plasma flow with an unmagnetized object is quite different from that with a magnetized object such as the Earth. Due to the absence of the global magnetic field, the unmagnetized object absorbs plasma particles that reach the surface, generating a plasma cavity called "wake" on the antisolar side of the object. For numerical simulations of electromagnetic structures around the wake, it is important to include the charging effect in global-scale simulations. The present study is one of the first attempts to study the formation of wake fields via a full-kinetic Vlasov simulation. It has been confirmed that the spatial structures of wake fields depend on the direction of interplanetary magnetic fields as well as the distance from the body.
ASJC Scopus subject areas
- Condensed Matter Physics