LSP of the majority of detected frequencies and the sliding LSP of eight identified SNFs in KIC 9533489. (a) LSP of the majority of detected frequencies observed in both short- and long-cadence photometry. The vertical segments indicate the positions of the eight SNFs detected in long-cadence photometry, which have been confirmed through SC photometry. (b) Detailed view of the eight SNFs, where each panel displays both the LSP profile and the corresponding sliding LSP. Note: LSPs multiply a factor to improve their visibility by their relative amplitude. The solid curves represent the numerical predictions of SNF modulation, shown in comparison with the observational data.