Image Details
Caption: Figure B1.
(Upper) The effective area of NICER, with the fitted characteristic energies of phenomenological calibration models in Wang et al. (2020a) and this work. (Lower) The residuals for NICER data in Epoch 3 from simultaneous fits with or without the phenomenological calibration models. The ﹩{\chi }^{2}﹩ values quoted are for the simultaneous fit of the 5 epochs.
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