Two‐dimensional structure of the solar wind near the Sun

Abstract

The two‐dimensional structure of the solar wind near the sun is analyzed by the method of MHD simulation. The helmet‐streamer configuration with a sharp boundary between the closed and open field regions has been reproduced. Due to the pressure‐driven current in the sheet, the magnetic field, which has a dipole configuration at the photosphere, is found to behave like R −2 at a large distance, R, from the sun.