Very long base interferometry (VLBI) and X-ray observations of complete samples of radio selected active galactic nuclei

Details Very long base interferometry (VLBI) and X-ray observations of complete samples of radio selected active galactic nuclei Very long base interferometry (VLBI) and X-ray observations of complete samples of radio selected active galactic nuclei

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984xue..conf..275b&link_type=abstract

In Max-Planck Inst. für Physik und Astrophysik X-Ray and UV Emission from Active Galactic Nuclei p 275-280 (SEE N85-17790 08-88)

Astronomy and Astrophysics

Astronomy

Active Galactic Nuclei, Very Long Base Interferometry, X Ray Astronomy, Compton Effect, Inverse Scattering, Relativistic Effects, Rosat Mission, Sky Surveys (Astronomy), X Ray Spectra

Scientific paper

To improve physical understanding of active galactic nuclei a campaign to obtain VLBI and X-ray observations of complete samples, selected by flat radio spectrum was instigated. The sample from the 5 GHz 1-Jy catalog in the declination range +10 to +70 deg is discussed. The inverse Compton predictions for the expected X-ray flux densities are derived; excess over observed flux density is usually interpreted as evidence for bulk relativistic motion. However, in this sample, the most extreme source, 0923+39 = 4C39.25, is well observed and usually taken as a standard for nonrelativistic sources. This points to serious problems in understanding relativistic sources. It is shown how the ROSAT all-sky survey combined with mm-VLBI will bring major progress in understanding of the physics of active galactic nuclei.

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