SIMBAD references

1997A&A...320..696S - Astronomy and Astrophysics, volume 320, 696-704 (1997/4-3)

The Piccinotti AGN sample observed in the ROSAT All-Sky Survey.

SCHARTEL N., SCHMIDT M., FINK H.H., HASINGER G. and TRUEMPER J.

Abstract (from CDS):

The ROSAT All-Sky Survey observations of the complete hard X-ray selected Piccinotti AGN sample demonstrate that the soft X-ray spectra of almost none of the sample AGN can be simply represented by the power law extrapolated from the 2-10keV range. A comparison of the soft X-ray spectra of the sample members with their medium energy continua measured with HEAO-1 and EXOSAT revealed that about half of the AGN in the sample are inrinsically absorbed. Furthermore, almost all sample AGN show excess fluxes in their soft X-ray emission. These features in the spectra of active galactic nuclei have an important impact on the interpretation of the cosmic soft X-ray background.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: Seyfert - galaxies: quasars - X-rays: galaxies

CDS comments: In table 1: IRAS 1832 = IRAS 18325-5926, ESO are 198-24, 103-35 and 141-55, 3A 0557 = 3A 0557-383

Simbad objects: 31

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2020.09.22-18:24:48

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