ROSAT-IUE All Sky Survey (RIASS): First results on active galaxies

Details ROSAT-IUE All Sky Survey (RIASS): First results on active galaxies ROSAT-IUE All Sky Survey (RIASS): First results on active galaxies

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992xrea.conf..155w&link_type=abstract

In MPI für Extraterrestrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background p 155-162 (SEE

Astronomy and Astrophysics

Astronomy

2

Active Galaxies, Iue, Rosat Mission, Sky Surveys (Astronomy), Spectral Energy Distribution, Active Galactic Nuclei, Emission Spectra, Line Spectra, Luminosity, Ultraviolet Spectra, X Ray Astronomy, X Ray Spectra

Scientific paper

To optimize the activity of the RIASS collaboration was established between IUE and Rosat projects. Some of the results obtained are given and the importance of such coordinated observations for the Spectral Energy Distribution (SED) definition of Active Galactic Nuclei is illustrated. All the participants in the AGN part of the RIASS program are listed. The RIASS observations allow for a comprehensive study of the overall spectral energy distribution of AGN's. For the first time, data from different instruments can be used to determine the SED, since the observations were simultaneous. A preliminary analysis shows that the energies radiated in the UV and the soft X-rays domains are closely related. The spectra of individual objects as well as the correlation found between the intensity of CIV lambda 1550 emission line and the soft X-rays luminosity, suggest that the excess detected in this band is the high energy tail of the big UV bump.

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