|Image & Movie Galleries > X-ray Sun > this page|
Sometimes large-scale magnetic loops connect two active regions, as can be seen (not really too well!) in this example. The general picture of active regions is that they arise as "emerging flux": magnetic loops push their way through the photosphere and appear in the corona as they fill with hot plasma. In some cases the interconnecting loops actually bridge the solar equator and link active regions of opposite polarities.