BeppoSAX observations of the Seyfert 2 galaxies NGC 7172 and ESO 103-G35

We investigate the X-ray spectra of the type 2 Seyfert galaxies NGC 7172 an d ESO 103-G35, using BeppoSAX observations, separated by approximately one year. We find that the X-ray spectra of both NGC 7172 and ESO 103-G35 can b e well fitted using a power-law model with an Fe K alpha emission line at 6 .4 keV. We did not find any statistically significant evidence for the exis tence of a reflection component in the X-ray spectra of these two galaxies. The continuum flux has decreased by a factor of approximately 2 during thi s period, in both objects. However, the spectral index as well as the absor ption column have remained constant. We find weak evidence for the decrease of the normalization of the Fe K alpha emission line in a similar manner t o the continuum in NGC 7172. We also report tentative evidence for a broad Fe K alpha line in agreement with previous ASCA observations. In contrast, in the case of ESO 103-G35 the line flux does not change while its width re mains unresolved.