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\subsection{Fourier Statistics}
All Fourier
Stastistic statistic color plots are shown in Fig ???. Unlike the Intensity
Statistics, statistics, the Fourier Statistics do not share a common
general behavior among behavior, and their color
plots. plots appear more heterogeneous. As a whole, we note various sensitivities
towards to changes in stellar mass-loss rates, magnetic field strength, and time evolution. The Delta-Variance and Wavelet transform color plots closely resemble those of the intensity statistics, as their greatest sensitivities correspond to changes in stellar-mass loss rates.
In fact, the Delta-variance exhibits a hierarchical structure in wind model pairings, similar to what we find with the Kurtosis and Skewness. For the Wavelet transform, we note a different hierarchical structure, one linked to magnetic fields. As we compare our The Delta-Variance's strong wind
models to different turbulent clouds, the distances vary, and often decrease if weaker winds are comparisons also
considered. When comparing turbulent runs with weaker wind models, the Delta-Variance shows small responses, but the Wavelet Transform appears appear slightly
sensitive. impacted by magnetic field strength, as seen in their distance magnitudes. The Wavelet transform displays a similar trend that is further augmented by time evolution.
The VCS statistic demonstrates strong, roughly equal sensitivities to both stellar mass-loss rates and magnetic field strength. As seen in its color-plot, distances solely quantifying changes %In fact, the Delta-variance exhibits a hierarchical structure/trend in
stellar mass-loss rates
-%-(T2 constant)--
tend wind model pairings similar to
resemble those explicitly comparing changes in magnetic field.
%--ones that
don't involve W1.
In fact, some of
our largest distances involve T4, the
run with Kurtosis and Skewness. For the
strongest magnetic field. We also Wavelet transform, we note
large distances between a different hierarchical structure, one closer linked to magnetic fields. As we compare our
two turbulent clouds T1 and T2 in the presence of strong
winds. These clouds have the same magnetic field strength, indicating that the VCS is sensitive wind models to
initial conditions. We different turbulent clouds, the distances vary, and often decrease if weaker winds are also
find considered. When comparing turbulent runs with weaker wind models, the
SPS to be sensitive to all of our simulation parameters, Delta-Variance shows small responses, but
it is not as structured as that of the
VCS. %(not sure how much to elaborate on this statistic). Wavelet Transform appears slightly sensitive.
For purely turbulent runs, we find the Bicoherence's behavior The VCS statistic demonstrates strong, roughly equal sensitivities to both stellar mass-loss rates and magnetic field strength. As its color-plot shows, distances solely quantifying changes in stellar mass-loss rates tend to resemble
that those explicitly comparing changes in magnetic field. In fact, some of
the Cramer statistic. While it usually yields equal our largest distances
for all simulation pairs, involve T4, the
statistic produces a range of values for comparisons involving purely turbulent runs. T3t0 and T4t0 appear to be relatively similar, and different from all other simulations. And, although run with the
strongest magnetic field. We also note large distances
for pairs (W3T2t0.1, T3t0) and (W2T4t0.1, T4t0) appear to be different, the distance between
runs W3T2t0.1 our two turbulent clouds T1 and
W2T4t0.1 T2 in the presence of strong winds. These clouds have the same magnetic field strength, indicating that the VCS is
found sensitive to the initial turbulence conditions. We also find the SPS to be
similar. %still waiting for HPC sensitive to
fix python issue, so I can't test out all of our simulation parameters, but unlike the
new distance metric just yet. VCS, it's sensitivities are not structured. (This makes it a difficult statistic to utilize?)
For purely turbulent runs, we find the Bicoherence to exhibit a binary behavior, similar to that of the Cramer statistic. While it usually yields equal distances for all simulation pairs, the statistic produces a range of values for comparisons involving purely turbulent runs. T3t0 and T4t0 appear to be relatively similar, and different from all other simulations. And, although the distances for pairs (W3T2t0.1, T3t0) and (W2T4t0.1, T4t0) appear to be different, the distance between runs W3T2t0.1 and W2T4t0.1 is found to be similar. %still waiting for HPC to fix python issue, so I can't test out the new distance metric just yet.
Out of all of our statistics, the VCA demonstrates the weakest sensitivity towards magnetic field strength. The behavior of its color-plot suggests an
invariance insensitivity to turbulent structure, as distances only change with wind model and evolution time. This allows the VCA to clearly detect changes in stellar mass-loss rates of varying sizes. The color plot shows the statistic's outputs for strong wind models to be different from that of all other models. But, once we introduce weaker winds to our turbulent clouds, they begin to resemble each other. As time evolves, the outputs become more alike. The magnetic field's weak impact on the statistic allows us to clearly see this.
Despite the various degrees of sensitivities, many of the Fourier statistics fail to produce distinct visual differences corresponding to feedback. As seen in section 3.2, the most common difference is horizontal offset, which is relatively minor (in taking observations?). The VCS does produce distinct features, but its color plot suggests sensitivities to parameters other than stellar mass-loss rates.