Publisher's Synopsis
The analysis of EXOSAT spectra of active galaxies are presented. The objects examined for X-ray spectral variability were MR 2251-178 and 3C 120. The results of these investigations are described, as well as additional results on X-ray spectral variability related to EXOSAT observations of active galaxies. Additionally, the dipping X-ray source 4U1624-49 was also investigated. Halpern, Jules P. NASA-CR-182694, NAS 1.26:182694, CAL-1683 NAG8-570...