Fig. 8.

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Observations from the Hinode EIS instrument in the pre-flare period. Left column: Fe XII intensity maps of the active region over 3 times using data from Hinode EIS. The rasters start at 03:39, 07:39 and 11:53 UT from top to bottom. The colour table is reversed colour, so dark is the highest intensity. The filament is seen as white (low intensity). Right column: non-thermal velocity of the Fe XII emission line for the same raster times. The filament region (indicated with cyan dotted lines) shows enhanced non-thermal velocity in each raster, as well as the emerging bipole (green arrows). The colour bar shows the ranges of the non-thermal velocity in km s−1.

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