Observations with high temporal resolution of the solar Ca+ K line
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.
KeywordsPower Spectrum High Time Resolution Bright Point Nyquist Frequency Apparent Velocity
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