Observation of Transition Region Fine Structures with Soho/Sumer |
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| Authors: | E Landi H E Mason M Landini |
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| Institution: | (1) Dipartimento di Astronomia e Scienza dello Spazio, Università di Firenze, Largo E. Fermi 5, 50124 Firenze, Italy;(2) DAMTP, University of Cambridge, UK |
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| Abstract: | We present a preliminary analysis of two quiet Sun transition region areas observed with the SOHO/SUMER spectrometer, using
lines from oxygen, nitrogen and silicon. The average quiet Sun physical parameters are studied as a function of line intensity.
Systematic variations of line position and width with increasing intensity are found. A large number of small-scale active
points have been observed, and preliminary analysis of the physical properties and dynamics of these active features is presented.
A jet-like structure, found in an active point, is also investigated and its velocity along the line of sight determined.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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| Keywords: | UV spectral emission lines solar transition region |
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