log-normal and log -Poisson fitting of Musca singularity spectrum. Left: singularity spectrum of the filtered (λ = 0.7) Musca 250 μm observational map (in orange) fitted against a log-normal parabolic spectrum (blue) defined by Eq. (9). The fit is performed using the quasi-Newton minimization algorithm implementation available in Matlab. Right: singularity spectrum of the filtered (λ = 0.7) Musca 250 μm observational map (in orange) fitted against a log-Poisson singularity spectrum (blue) defined by Eq. (10). The minimization algorithm is the same. Both images display the values found by the minimization algorithm and the error fit.
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