THE X-RAY-EMISSION OF THE POLAR BL HYDRI

We report on the analysis of the ASCA and BeppoSAX X-ray observations of the polar system BL Hyi, per formed in October 94 and September 96, respectively. Emission from both poles is apparent from the folded li ght curves of both observations; the emission from the second pole var ies from cycle to cycle, indicating non-stationary accretion there. Th e temperature of the post-shock region is estimated to be about 10 keV . Inclusion of both complex absorption and Compton reflection signific antly improves the quality of the fit. No soft X-ray component is obse rved; the BeppoSAX/LECS upper limit to the soft component is in agreem ent with theoretical expectations for this low magnetic field system.