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The Nature of Running Penumbral Waves Revealed
D. Shaun Bloomfield, Andreas Lagg, Sami K. Solanki
We seek to clarify the nature of running penumbral (RP) waves: are they chromospheric trans-sunspot waves or a visual pattern of upward-propagating waves? Full Stokes spectropolari…
Modified p-modes in penumbral filaments?
D. S. Bloomfield, S. K. Solanki, A. Lagg +2
Aims: The primary objective of this study is to search for and identify wave modes within a sunspot penumbra. Methods: Infrared spectropolarimetric time series data are inverted us…
Observations of Running Waves in a Sunspot Chromosphere
D. Shaun Bloomfield, Andreas Lagg, Sami K. Solanki
Spectropolarimetric time series data of the primary spot of active region NOAA 9448 were obtained in the Si I 10827 Åline and the He I 10830 Åmultiplet with the Tenerife Infrared P…