Search

ABSTRACT We preset first results of the long term monitoring of Seyfert Galaxies with BeppoSAX Wide Field Cameras (WFCs). We have firstly examined the data of the Seyfert 1.5 NGC 4151, This object is known to be one of the brightest Seyferts ranging from few to about 15 mCrab in the 2 - 10 keV energy range. As of September 13, 1998, the sky region containing NGC 4151 has been observed by WFCs in secondary mode (i.e., when the narrow field instruments are performing prime observations) about 80 times. We report here the results of the analysis of 21 observations. The minimum flux at which the source was detected is ∼ 4 mCrab, In June of this year we found the source at ∼ 20 mCrab, the highest state ever recorded. The study of the light curve of the very faint and stable source Cas A gives a preliminary assessment of systematic errors of ∼20%. The preliminary results obtained, confirm that the WFCs are powerful tools for the study of bright AGN. [ABSTRACT FROM AUTHOR]

ABSTRACT We present BeppoSAX broad band (0.1-200 keV) spectral results on a sample of bright Seyfert 1 galaxies, chosen to be representative of the class as a whole. The objects discussed ill this paper are: Fairall 9, NGC 5506, NGC 4593 and IC 4329A. In all of them a (broad) iron line and the Compton reflection continuum are clearly detected. In one of them (IC 4329A) a high energy cut-off with e-folding energy of 350 keV is also present. [ABSTRACT FROM AUTHOR]