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The Coarse Versus The Fine Structure Of The Quiet-Sun Chromospheric And Transition Region Network

TitreThe Coarse Versus The Fine Structure Of The Quiet-Sun Chromospheric And Transition Region Network
Type de publicationConference Paper
Year of Publication1999
AuteursPatsourakos, S., Vial J.-C., Gabriel A.-H., and Bellamine N.
ÉditeurVial, J.-C., and Kaldeich-Schü B.
Conference Name8th SOHO Workshop: Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona
Date PublishedOct
Résumé

The chromospheric and transition region network is believed to be the basic channel of energy and momentum that heats the corona and accelerates the solar wind. While at spatial scales of one supergranular cell the network appears to be more or less homogeneous, at smaller scales it possesses a finer structure. We present here observations made with the CDS and SUMER spectrometers on SOHO pursuing the investigation of the coarse and the fine structure of the quiet-Sun network. A two-dimensional autocorrelation method allowed us to deduce the temperature-variation of network's width, while well-chosen density-sensitive line-ratios permitted to determine its filling factor at different temperatures. A discussion on possible implications of our results for steady-state energy and momentum balance for the quiet-Sun is included.