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Soft X-Ray Spectra of AGN Discovered Via Their Hard X-Ray

机译:通过硬X射线发现aGN的软X射线光谱

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The subject of this study were Active Galactic Nuclei (AGN) with the ROSAT position sensitive proportional counter (PSPC). AGN's were first discovered via their hard (1-10 keV) X-ray emission. We selected objects identified by the scanning modulation collimator (MC), from the NRL Large Area Sky Survey catalog, at galactic latitudes greater than 20 degrees, and galactic hydrogen column density less than 3 x 10(exp 20). We have received data from observations of nine of these objects. We will report on their soft X-ray spectral shape, and on confirmation of the HEAO-1 identifications. We are especially motivated to test the hypothesis of Schwartz and Tucker that the AGN energy spectra do not have exact power laws, but exhibit constant flattening with energy. We describe a novel adaptation of the PROS software to allow us to perform fits to a Log-Gaussian spectral shape.

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