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Figure 1: O V (629.732 Å) image of the chosen dataset (s6011r00). It shows on the left the ten raster steps and on the right the positions of the 8 sements each 40 pixels long alongside all the pixels of the relevant raster step. These are denoted as follows: the segment from step 0 as 1(0); the segment from step 1 as 2(1); the segment from step 4 as 3(4); the two segments from step 7 as 4(7L) for the lower one and 5(7U) for the upper one; the two segments from step 8 as 6(8L) for the lower one and 7(8U) for the upper one; the segment from step 9 as 8(9). |
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Figure 2: Same as Fig. 1 for Mg IX (368.057 Å). |
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Figure 3: Variation of intensity in the O V (629.732 Å) line along the slit for the 40 pixels long segments chosen. |
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Figure 4: Same as Fig. 3 for Mg IX (368.057 Å). |
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Figure 5: Intensity variation compared to the mean spectrum and wavelength shift in velocity units with respect to the mean spectrum of the lines selected for the integral inversion in each segment. Error bars are evaluated combining the measurement errors as in Sect. 3.3. Data points with no bars have uncertainties below the size of the symbols. Note that in segments 1(0) and 2(1) we are unable to obtain a reliable Gaussian fit of the Si XII (520.662 Å) and therefore this line is not reported for such segments. |
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Figure 6:
DEM from the selected segments compared with the mean
spectrum (thick solid line). Above ![]() |
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Figure 7:
Derived elemental abundances for our CDS s6011r00
observation compared with the Feldman et al. (1992)
coronal abundances. Abundances are plotted as ratios with
the photospheric values taken from Feldman (1992).
The 3-![]() ![]() |
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Figure 8:
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Figure 9: Same as Fig. 8 for NIS-2 lines. From the comparison with the previous plot we infer that the error in the NIS-1/NIS-2 cross calibration is at most 10%. |
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