Comment on the paper ‘Two-Fluid Model of the Solar Corona’ by J. W. Knight,C. E. Newman,and P. A. Sturrock

Observational line width evidence for a possible discrepancy between ion and electron temperature in the corona is reviewed for comparison with the conclusions of Knight et al. We note that the high line-width temperatures extend much higher in the corona than the high ion temperatures computed by Knight et al., and suggest that a significant ion-electron temperature difference should be expected only near a steep temperature gradient, as in the transition region.