# O VIII 18.969 Angstroms

## Models with isotropic porosity

Note: We fit only the MEG data. There are 246 MEG counts in the spectral region we fit (and plot below). See the fitting log.

Same continuum fit as we used for the non-porous models: *n*=2, best-fit norm=2.40e-3. The 68% confidence limits on the normalization are +/- 8e-4. And the best fit is formally a good fit. View the spectral region near the line: MEG.

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.

And here are the joint constraints on taustar and *u*_{o}:

Compare this to the smaller confidence regions from the non-porous model fitting.

Next, we fit anisotropic porosity models to the data.

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*last modified*: 25 June 2008