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Fig. 1


Pore NOAA 11005, working FOV . North is at the top, west to the left. From left to right: a) broad-band image around 621 nm, b) Ca II 854.2 nm blue (−60 pm) wing intensity, c) Ca II line centre intensity (in logarithmic scale for better visualisation), d) Ca II Doppler map with a velocity range from −2.2 km s-1 (black, towards the observer) to 4.5 km s-1 (white, away from the observer), and e) Fe I 617.3 nm LOS magnetogram in arbitrary units, showing opposite-polarity patches around the pore.

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