Abstract
This paper reports on EXOSAT observations of four bright QSO's and active galaxies. The QSO PHL 1657 has a simple spectrum that can be fit with power law plus some low energy absorption. A soft excess is observed for both MR 2251 and E 1352.24+1830. Finally, PKS 2126-158 was detected and the results are consistent with a 0.7 energy index.
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McGlynn, T.A., Tennant, A.F., Shafer, R.A. et al. EXOSAT spectra of some bright QSO's. Space Sci Rev 40, 633–636 (1985). https://doi.org/10.1007/BF00179879
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DOI: https://doi.org/10.1007/BF00179879