EUV Full Sun Imaged Spectral Atlas Using the SOHO Coronal Diagnostic Spectrometer
作者： William T. Thompson , PÅl Brekke
关键词: Monochromatic color 、 Wavelength 、 Spectral atlas 、 Line (formation) 、 Spectral line 、 Physics 、 Spectrograph 、 Optics 、 Spectrometer 、 Astrophysics 、 Spectral resolution
摘要: The Coronal Diagnostic Spectrometer (CDS) aboard the Solar and Heliospheric Observatory (SOHO) carries out a regular program of measuring full-disk irradiance using Normal Incidence Spectrograph (NIS). solar spectrum is returned in wavelength bands 308–379 A 513–633 A, with spectral resolution between 0.3 0.6 A. recent modification to CDS on-board software allows simultaneous moderate monochromatic images be made stronger lines these ranges. We report on observations 23 April 1998, 21 May 22 June 1998. total 69 full-Sun are extracted from line data. For first time, spectrally resolved full Sun He ii 303.8 Si xi 303.3 presented compared. Velocity maps singly ionized helium presented. Correlations intensity velocity over wide range transition region coronal temperatures shown. Lines i Fe xiv show statistical red shifts 1–7 km s−1 active regions quiet areas. Mg ix x presented, showing strong upflow downflow associated regions, but not correlated brightest emission. Changes width also i, discussion similar features other comparable temperature. Corrections which need applied CDS/NIS data extract meaningful velocities widths discussed. identifications examined. spatial variation background component
springer.com
harvard.edu
sci-hub.se 参考文章(26)
S. F. Brown, Formation of coronal loops with temperatures between 10^5^ and 10^6^K. Astronomy and Astrophysics. ,vol. 305, pp. 649- 659 ,(1996)
T. Fredvik, P. Maltby, CORONAL RADIATION AND HELIUM λ584 EMISSION IN ACTIVE REGIONS Solar Physics. ,vol. 184, pp. 113- 132 ,(1999) , 10.1023/A:1005070413113
P. Brekke, O. Kjeldseth-Moe, N. Brynildsen, P. Maltby, S. V. H. Haugan, R. A. Harrison, W. T. Thompson, C. D. Pike, FLOWS AND DYNAMICS IN THE CORONA OBSERVED WITH THE CORONAL DIAGNOSTIC SPECTROMETER (CDS) Solar Physics. ,vol. 170, pp. 163- 177 ,(1997) , 10.1023/A:1004945702259
A. Fludra, G. A. Fischbacher, D. E. Innes, S. D. Loch, A. C. Lanzafame, E. Landi, H. P. Summers, M. Landini, J. Lang, W. T. Thompson, R. A. Harrison, R. W. P. McWhirter, D. H. Brooks, The quiet Sun extreme ultraviolet spectrum observed in normal incidence by the SOHO coronal diagnostic spectrometer Astronomy and Astrophysics. ,vol. 347, pp. 277- 312 ,(1999)
P. Mein, E. Tandberg-Hanssen, B. Schmieder, J. M. Malherbe, Dynamics of solar filaments. III - Analysis of steady flows in H-alpha and C IV lines Astronomy and Astrophysics. ,vol. 136, pp. 81- 88 ,(1984)
William Thompson, Martin Carter, EUV Full-Sun Imaging and Pointing Calibration of the SOHO Coronal Diagnostic Spectrometer Solar Physics. ,vol. 178, pp. 71- 83 ,(1998) , 10.1023/A:1004915531252
R. Tousey, J.-D. F. Bartoe, G. E. Brueckner, J. D. Purcell, Extreme ultraviolet spectroheliograph ATM experiment S082A. Applied Optics. ,vol. 16, pp. 870- 878 ,(1977) , 10.1364/AO.16.000870
J.-D. F. Bartoe, G. E. Brueckner, J. D. Purcell, R. Tousey, Extreme ultraviolet spectrograph ATM experiment S082B Applied Optics. ,vol. 16, pp. 879- 886 ,(1977) , 10.1364/AO.16.000879
P. Brekke, Observed Redshifts in O V and Downflows in the Solar Transition Region The Astrophysical Journal. ,vol. 408, pp. 735- 743 ,(1993) , 10.1086/172633
H. Achour, P. Brekke, O. Kjeldseth-Moe, P. Maltby, Observed Redshifts in the Solar Transition Region above Active and Quiet Regions The Astrophysical Journal. ,vol. 453, pp. 945- ,(1995) , 10.1086/176454