Transequatorial magnetic flux loops on the sun: a possible new source of geomagnetic storms
Following the traditional way of expression, geomagnetic storms have been classified into three types; flare-type Sc storms, CH-type Sg storms, and DB-type Sc storms (Sc:sudden commencement;CH:coronal hole;g:gradual;DB:disparition brusque).We have discovered that some transequatorial loops (TEL) give rise to geomagnetic storms, when the TEL explode