The Chromospheric network dynamics as derived from the analysis of CA II K and He I 1083 NM lines

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Scientific paper

We present results of line profile analysis of observations simultaneously performed around the Ca II K and He I (1083 nm) lines, using the Horizontal Spectrograph of the Vacuum Tower Telescope of NSO/SP. From the spectral analysis of a 83 min long sequence of CCD spectra, we derive some dynamical properties of the main components of the quiet chromosphere: i) the magnetic network, ii) the cell interior. We present a whole set of amplitude spectra near 5 and 3 min periods for the two lines; K3 and He I velocity spectra extending up to 100 mHz are also considered, for the first time.

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