The Temperature of the Low Corona During Solar Cycles 21–23

@article{Altrock2004TheTO,
  title={The Temperature of the Low Corona During Solar Cycles 21–23},
  author={Richard Charles Altrock},
  journal={Solar Physics},
  year={2004},
  volume={224},
  pages={255-268}
}
  • R. Altrock
  • Published 1 October 2004
  • Physics, Environmental Science
  • Solar Physics
AbstractObservations of the forbidden coronal lines Fe xiv 530.3 nm and Fe x 637.4 nm obtained at the National Solar Observatory at Sacramento Peak are used to determine the variation of coronal temperature at latitudes above 30∘ during solar activity cycles 21–23. Features of the long-term variation of emission in the two lines are also discussed. Temperatures at latitudes below 30∘ are not studied because the technique used to determine the coronal temperature is not applicable in active… 
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References

SHOWING 1-7 OF 7 REFERENCES
Large-scale coronal temperature and density distributions, 1984-1992
Abstract : In this Letter we characterize the temperature and the density structure of the corona utilizing spectrophotometric observations at different heights but it the same latitude during the
AN ‘EXTENDED SOLAR CYCLE’ AS OBSERVED IN Fe XIV
Investigation of the behavior of coronal intensity above the limb in Fexiv emission (530.3 nm) obtained at the National Solar Observatory at Sacramento Peak over the last 23 years has resulted in the
Coronal Density and Temperature Structure from Coordinated Observations Associated with the Total Solar Eclipse of 1988 March 18
This paper explores and compares diagnostics for temperature and density within large-scale structures of the inner corona based on cospatial and cotemporal spectrophotometric observations made at
Temperature Structure of the High-Latitude Corona
This Letter explores the physical and morphological characteristics of the large-scale coronal structures such as polar coronal rays and high-latitude streamers as seen in white light and relates
Solar Corona Photoelectric Photometer Using Mica Etalons
  • R. Smartt
  • Physics
    Astronomical Telescopes and Instrumentation
  • 1982
A solar corona photoelectric photometer has been constructed that operates at the three coronal lines, Fe XIV (5302.9 Å), Ca XV (5694.5 Å) and Fe X (6374.5 Å), using mica etalons and narrow-band