Fr.: grand jet coronal
A bright, narrow stream of particles traveling through the Sun's corona, visible in images taken with a coronagraph or during a total solar eclipse. Coronal streamers represent the most outwardly extended structures in the solar corona and result from the interaction between the solar slow wind and the large-scale magnetic field. → helmet streamer.
Fr.: grand jet en bulbe, ~ ~ en casque prussien
A large-scale → coronal feature with apparent → cusp, seen during a → solar eclipse. They usually arise from → sunspots and → active regions, so at the base of a helmet streamer one will often find a → prominence. They form magnetic loops that connect the sunspots and suspend material above the surface of the Sun. The magnetic field lines trap the material to form the streamers. The action of the → solar wind is at the origin of the peak feature.
Fr.: jet, grand jet
M.E. stremer, from → stream + -er.
Derafšak, from derafš "flag, banner;" Mid.Pers. drafš "banner;" Av. drafša- "banner;" cf. Skt. drapsá- "flag, banner; drop, spark;" also Fr. drapeau; It. drappo "flag;" Lith. drapana "dress."