High‐Temperature Lines in SUMER Spectra Recorded Above a Bright Solar Active Region
- 10 August 1998
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 503 (1) , 467-474
- https://doi.org/10.1086/305966
Abstract
We identify spectral lines emitted by solar abundant elements due primarily to transitions within the 2s22pk and 3s23pk (where k = 1, 5) ground configurations of ions that are formed in ionization equilibrium between 2 × 106 and 8 × 106 K. The transitions were identified in spectra of a bright active region recorded 1997 September 6, by the Solar Ultraviolet Measurements of Emitted Radiation Spectrometer (SUMER) flown on the Solar and Heliospheric Observatory (SOHO). Some of these lines provide useful plasma diagnostic tools for measuring the physical conditions in the solar corona.Keywords
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