The Position of High-Frequency Waves with Respect to the Granulation Pattern |
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| Authors: | A An?i? |
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| Institution: | (1) Astronomical Research Centre, Queen’s University Belfast, University Road, Belfast, BT7 1NN, UK |
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| Abstract: | High-frequency velocity oscillations were observed in the spectral lines Fe i 543.45 nm and 543.29 nm, by using 2D spectroscopy with a Fabry – Perot and speckle reconstruction, at the Vacuum Tower Telescope
in Tenerife. We investigate the radial component of waves with frequencies in the range 8 – 22 mHz in the internetwork, network,
and a pore. We find that the occurrence of waves does not show any location preference and that they are equally distributed
over downflows and upflows, regardless of the activity of the observed area in the line of Fe i 543.45 nm. The waves observed in the lower formed line of Fe i 543.29 nm seem to appear preferentially over downflows. |
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