Fig. 1
Temperature response R(T) for several X-ray instruments. The naming convention for the detector-filter combinations corresponds to the CHIANTI database (also see Table 2). Each curve is multiplied by a constant to get the curves nicely into the same plot. For comparison, we plot two power laws with power-law indices of 0.7 (dotted) and 2.0 (dashed). See Sect. 2.
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