High-temperature lines in SUMER spectra recorded above a bright solar active region

Citation
U. Feldman et al., High-temperature lines in SUMER spectra recorded above a bright solar active region, ASTROPHYS J, 503(1), 1998, pp. 467-474
Citations number
25
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
503
Issue
1
Year of publication
1998
Part
1
Pages
467 - 474
Database
ISI
SICI code
0004-637X(19980810)503:1<467:HLISSR>2.0.ZU;2-#
Abstract
We identify spectral lines emitted by solar abundant elements due primarily to transitions within the 2s(2)2p(k) and 3s(2)3p(k) (where k = 1, 5) groun d configurations of ions that are formed in ionization equilibrium between 2 x 10(6) and 8 x 10(6) K. The transitions were identified in spectra of a bright active region recorded 1997 September 6, by the Solar Ultraviolet Me asurements 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 .