Numerical studies of azimuthal modulations of the solar wind with magnetic fields

✍ Scribed by Y. Nakagawa; R. E. Wellck

• Publisher: Springer
• Year: 1973
• Tongue: English
• Weight: 771 KB
• Volume: 32
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00152741

✦ Synopsis

The evolution of azimuthal modulation of the solar wind is examined by numerical integration of the basic equations governing supersonic, super-Alfv6nic, polytropic one fluid flow in the equatorial plane of the Sun with radial as well as azumuthal magnetic fields. The computations are started by introducing various sets of finite amplitude perturbations stationary with respect to the Sun. It is shown that for a properly chosen set of simultaneous perturbations of the radial velocity and temperature, quantitative agreement with the averaged observational results at 1 AU can be obtained, including the advance of the density modulation with respect to those of velocity and temperature. It is further shown that modulations at 1 AU depend on the relative azimuthal positions between the Sun and the Earth.