The hard X-ray spectra of symbiotic stars: Any need for colliding winds

I have proposed a new interpretation of the Xray spectra of symbiotic stars:that they are dominated by absorption by the partiallyionised wind of the redgiant, and not by emission from colliding winds as was previously thought.My interpretation predicts that all systems with apparent collidingwind ROSATspectra should also have hard Xray emission. I propose XMMNewton observationsof three bright symbiotic stars aimed at detecting this emission. Once thecollidingwind model has been disproved these observations will also be used tomodel the partiallyionised absorption which will provide a powerful probe ofthe red giant wind and of wind accretion onto a compact object. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]