A preliminary exploration of the mechanism for the occur - rence of two types of various magnetic structures in the magnetotail

摘要

As well known, the magnetic cross-tail compo - nent B_y in the magnetotail is in direct proportion to the in - terplanetary magnetic field (IMF) B_y component. And the polarity of IMF and plasmoid /flux rope B_y components do indeed agree. This results indicate that the IMF By pene - trates plasmoids and the magnetic structures must therefore - be three - dimensional.