Multifractality and singularity of 8b solar neutrino flux signals from sudbury neutrino observatory

The authors have investigated two solar neutrino flux time series data from Sudbury Neutrino Observatory: one is that with D₂O and another is with salt. Both these data series being complex, non-linear and non-stationary, the authors have tried to detect the irregularity and multifractality in them using multifractal detrended fluctuation analysis and comparing with the results obtained using wavelet transform modulus maxima algorithm. Singularity spectra of the signals have been obtained to measure the degree of multifractality of the solar neutrino flux signal.