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Extreme ultraviolet observations of the solar corona: First results from the coronal diagnostic spectrometer on SOHO |
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| Authors: | RA Harrison A Fludra EC Sawyer JL Culhane K Norman AI Poland WT Thompson O Kjeldseth-Moe B Aschenbach MCE Huber AH Gabriel HE Mason |
| Institution: | a Astrophysics Division, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K. b Mullard Space Science Laboratory, Holmbury St Mary, Dorking, Surrey RH5 6NT, U.K. c Code 682.3, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, U.S.A. d Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029, Blindern, 0315, Oslo, Norway e Max-Planck-Institute-für-Extraterrestrische-Physik, D-85748, Garching, Germany f ESA, Space Science Department, ESTEC, PO Box 299, 2200 AG, Noordwijk, The Netherlands g Institut d'Astrophysique Spatiale, Université Paris XI, 91405, Orsay Cedex, France h Department Applied Maths and Theoretical Physics, Silver Street, Cambridge CB3 9EW, U.K. |
| Abstract: | We present first results from the Coronal Diagnostic Spectrometer (CDS) aboard the ESA/NASA Solar and Heliospheric Observatory (SOHO). CDS is a double spectrometer operating in the 151–785 Å range. This region of the solar spectrum is rich in emission lines from trace elements in the solar atmosphere, which can be used to derive diagnostic information on coronal and transition region plasmas. Early spectra are presented and well identified lines are listed. In addition, examples of images in selected wavelength ranges are shown, for a prominence, a loop system and a bright point, demonstrating well the power of such extreme ultraviolet observations. |
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