Transition-Region Network Boundaries in the Quiet Sun: Width Variation with Temperature as Observed with CDS on SOHO
Title | Transition-Region Network Boundaries in the Quiet Sun: Width Variation with Temperature as Observed with CDS on SOHO |
Publication Type | Journal Article |
Year of Publication | 1999 |
Authors | Patsourakos, S., Vial J.-C., Gabriel A. H., and Bellamine N. |
Journal | Astrophysical Journal |
Volume | 522 |
Pagination | 540-546 |
Date Published | Sep |
Abstract | We report here the results of a study of the temperature variation of the network boundary thicknesses in the quiet-Sun transition region. A Fourier-based two-dimensional autocorrelation method has been applied to 240\^ ''x240\^ '' rasters obtained in several transition-region lines by the CDS spectrometer on SOHO. The quantitative variation of the network boundary width with temperature has been obtained for the first time in a full two-dimensional field. It appears that network boundaries have an almost constant width up to a temperature of about 10\^ 5.4 K and then fan out rapidly at coronal temperatures. This expansion of the transition-region network boundaries with temperature is found to be quantitatively in agreement with earlier theoretical models of the transition region. |
DOI | 10.1086/307609 |
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