# Fe XVII 15.014 Angstroms

## Models with anisotropic porosity

Note: Both MEG and HEG are being fit simultaneously

Same continuum fit as we used for the non-porous and isoporous models: n=2, best-fit norm=1.71e-3.

Note that the opacity bridging law used for these isoporosity fits is *Rosseland*.

Note that the above parameters don't agree exactly with those from the baseline (non-porous) fit, despite the fact that the above model has *h*_{inf}=0. The parameter values are very close, though. The slight difference is just a result of the relative flatness of the fit statistic in the portion of parameter space surrounding the global minimum.

Here are the 68%, 90%, and 95% joint confidence limits on *h*_{inf} and taustar. The asterisk represents the best-fit model, shown as the red histograms on the above two plots.

Models with anisotropic porosity provide such a bad fit, that even modest values of the porosity length are ruled out. And consequently, allowing a non-zero porosity length does not affect the confidence contours in taustar-*u*_{o} parameter space. So we do not show a new version of that plot here.

Forcing a fit with taustar=8, the value implied by the literature mass-loss rate:

Note that ΔC=42 (compared to the global best-fit model, which has zero porosity length), highly ruling out this model.

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*last modified*: 28 April 2008