Transition-region network boundaries in the quiet sun:: Width variation with temperature as observed with CDS on SOHO

被引：49

作者：

Patsourakos, S ^{[1
]}

Vial, JC ^{[1
]}

Gabriel, AH ^{[1
]}

Bellamine, N ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France

来源：

ASTROPHYSICAL JOURNAL | 1999年 / 522卷 / 01期

关键词：

Sun : corona; Sun : transition region; Sun : UV radiation;

D O I：

10.1086/307609

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 " x 240 " 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.

引用

页码：540 / 546

页数：7

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