plasmoid
A plasmoid is a coherent structure of magnetized plasma separated from its surroundings by magnetic field lines, behaving as a self-contained region within a larger plasma system. In two-dimensional descriptions, plasmoids often appear as magnetic islands; in three dimensions they take the form of twisted flux ropes.
Plasmoids commonly arise during magnetic reconnection, when oppositely directed magnetic fields rearrange and plasma is accelerated.
Physically, plasmoids carry magnetic flux and currents, can have enhanced density and pressure, and are characterized
Observationally, plasmoids have been identified in the solar corona during solar flares and coronal mass ejections,
Studying plasmoids helps understand fast magnetic reconnection and energy release in plasmas. They provide a mechanism