Fig. 9.
Map of the logarithm of the density in cm−3 obtained for the observation on October 17, 2007, from EIS spectra. We used the Fe XIII λ 202.02 and 203.83 line pair to calculate this density map. In the white pixels, fitting of the EIS lines failed. The density value of each pixel allows us to compute the optimal linear combination of lines to be used to determine the FIP bias in those pixels.
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