The Position of High Frequency Waves with Respect to the Granulation Pattern

Details The Position of High Frequency Waves with Respect to the Granulation Pattern The Position of High Frequency Waves with Respect to the Granulation Pattern

2007-05-09

arxiv.org/abs/0705.1246v1

Astronomy and Astrophysics

Astrophysics

Article has 12 pages and 7 images. It is accepted in Solar Physics Journal

Scientific paper

10.1007/s11207-007-0289-4

High frequency velocity oscillations were observed in the spectral lines Fe I 543.45nm and 543.29nm, using 2D spectroscopy with a Fabry- Perot and speckle reconstruction, at the VTT in Tenerife. We investigate the radial component of waves with frequencies in the range 8 - 22mHz in the internetwork, network and a pore. We find that the occurrence of waves do not show any preference on location and are equally distributed over down-flows and up-flows, regardless of the activity of the observed area in the line of Fe I 543.45nm. The waves observed in the lower formed line of Fe I 543.29nm seem to appear preferentially over down-flows.

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