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Observations with high temporal resolution of the solar Ca+ K line

  • T. Duvall
  • W. Livingston
  • C. Mahaffey
3. Solar Oscillations Observational Evidence
Part of the Lecture Notes in Physics book series (LNP, volume 125)

Abstract

High time resolution (Δt = 10s) photometric scans of chromospheric Ca+ K are examined for evidence of propagating waves. The scans refer to a quiet area (1 x 7 arc seconds) near disk center. Diagnostics include line profile movies, time sequence spectrograms and power spectra. Both upward and downward (reflected?) disturbances having lifetimes, ~ 1–2 minutes are seen.

Keywords

Power Spectrum High Time Resolution Bright Point Nyquist Frequency Apparent Velocity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Jensen, E. and Orrall, F.Q. 1963, Ap. J., 138, 252.Google Scholar
  2. Liu, S.-Y. 1974, Ap. J., 189, 359.Google Scholar
  3. White, O.R. and Livingston, W. 1978, Ap. J., 226, 679.Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • T. Duvall
    • 1
  • W. Livingston
    • 1
  • C. Mahaffey
    • 1
  1. 1.Kitt Peak National ObservatoryTucsonUSA

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