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Figure 7
Example of noise [\eta_{k}^{\,*}] of Z *k, [{k\!<\!K}], the correlation kernel [{g_{k}^{\,*}\! = \!\varsigma_{k}g_{{\cal B}}}] where [g_{{\cal B}}] is produced by [{\cal B}] and [{\cal B}^{-1\!}], and the corresponding PSD [\Psi_{k}^{\,*}]. For the kernel, 50%-gray pixel color in the figure corresponds to value 0 in the data; for the PSD, black is 0. Note the missing low frequencies at the center of the PSD, and the higher-frequency nature of [\eta_{k}^{\,*}] compared with the white streak noise η in Figure 1[link].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 3| May 2021| Pages 876-888
https://doi.org/10.1107/S1600577521001910
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