5) fitted over the radial range . Both the best-fit parameters and are quoted in Table 1.
Plots of the deprojected electron density profiles with the best-fit model in Eq. (5) overplotted and the residuals shown in the bottom panel, where di, mi and are the values of the data, model and error on the data at a given radius, respectively. Together with the value, the R factor represents a measure of the overall residuals and is given by . In 81 per cent of the cases, R < 0.2.
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