Dual Flows with Supersonic Velocities in the Sunspot Transition Region
Title | Dual Flows with Supersonic Velocities in the Sunspot Transition Region |
Publication Type | Journal Article |
Year of Publication | 2004 |
Authors | Brynildsen, N., Maltby P., Kjeldseth-Moe O., and Wilhelm K. |
Journal | Astrophysical Journal |
Volume | 612 |
Pagination | 1193-1195 |
Date Published | Sep |
Abstract | Observations of sunspot transition region lines that deviate significantly from a Gaussian shape are presented. Attention is given to ``dual flows,'' a line profile phenomenon in which two distinct velocities are observed within the same spatial resolution element. In 5 out of 12 sunspots we observe dual flows. Several emission line profiles are well represented by two Gaussian line components, one with a subsonic and one with a supersonic line-of-sight velocity. |
DOI | 10.1086/422838 |
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