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The two XUV–EUV spectrometers on SOHO have collected a large amount of data in the 6000–106 K solar plasma temperature range. These data have allowed us to greatly enhance our knowledge of the processes acting in the solar atmosphere, from the chromosphere to the corona. Some results on the quiet Sun structure (network, quiet Sun versus coronal hole), on the dynamics (velocities, waves, transient events), and the main characteristics of the quiet Sun atmosphere are presented and discussed.  相似文献   
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Book reviews     
Kleczek  J.  van Gent  R. H.  Rutten  Robert J.  de Munck  J. C.  Slottje  C.  Severne  G.  Pecker  Jean-Claude  Postma  H.  Grishchuk  L. P.  Niewenhuijzen  H.  Schuiling  R. D.  van Beek  H. F.  Reijnen  G. C. M.  Heidmann  Jean  Lemaire  J.  Bleeker  Johan  Icke  V.  Neéman  Y.  Feast  M. W.  de Graaff  W. 《Space Science Reviews》1986,43(3-4):383-396
Space Science Reviews -  相似文献   
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The increase of our understanding of the processes acting in the solar corona and maintaining it is strongly dependent on the quality of the data that are obtained to check theories. The fine structure of the solar atmosphere seen from the photosphere and extending to the hottest parts of the corona requires data with high resolution in all parameter space (angular, spectral and temporal). To constrain the hypotheses that are proposed to describe the solar corona, it is necessary to establish an accurate energy budget taking into account the processes which are acting from the chromosphere to the corona. Some requirements can be established and compared with the data collected so far (or about to be collected) with the present SUMER (Solar Utraviolet Measurements of Emitted Radiations) instrumentation.  相似文献   
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In this paper, we summarize the work done to build a UV-EUV spectral atlas of a prominence and we introduce some recent scientific results obtained from these data.  相似文献   
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The analysis of data taken by SUMER near disk center, where a small coronal hole is observed in EIT images, is performed. From the measurements of Doppler non-thermal velocities and intensities, we search for the diagnostics and the signature of small scale structures in the coronal hole using transition region lines. Transition region lines in the range of 7 × 104 K to 2.5 × 105 K have a non-thermal velocity excess of 4.0 to 5.5 km s-1 relative to the contiguous quiet Sun. While the average intensity is lower in the coronal hole than in the quiet area, this result shows an increase of turbulence at the base of the high speed solar wind. This revised version was published online in June 2006 with corrections to the Cover Date.  相似文献   
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