IHOP 266 observations of equatorial plumes on 22-Sep-2014
Three repeats of Cool_loop_stare were performed at 18:10, 19:19 and 21:55. This observation was not coordinated with IRIS.
The target was a compact, low-latitude coronal hole to the south of an active region complex. The AIA images (see movie below) show various "clumps" of plume emission.
The EIS data show a narrow, bright band at Y=-300 that is seen
all wavelengths (even Fe XVI). The AIA 171 movie shows that this is a
little bright point that is quite intense. It doesn't seem to be part
of a plume and it doesn't give a jet. Helioviewer shows that the BP is
caused by some minority polarity (black) within the coronal hole
The image below is a screen-grab from eis_fit_viewer, showing
intensity and Dopplergrams from Fe XII 195 for the 18:10 raster. The
strong redshift (around
20-25 km/s) at the bright point is very striking. Could the blue-shift
south of the BP be evidence of outflow? Note that the two
following rasters show the same velocity pattern.
SOT ran G-band, Ca II and Mg magnetograms between 18:08 and 22:08 UT. The details are:
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