X ray constraints on the beaming hypothesis for BL Lacertae objects

Details X ray constraints on the beaming hypothesis for BL Lacertae objects X ray constraints on the beaming hypothesis for BL Lacertae objects

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296.1033p&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 2: AGN and the X Ray Background p 1033-1036 (SEE N90-2

Astronomy and Astrophysics

Astronomy

Astronomical Models, Beams (Radiation), Bl Lacertae Objects, Luminosity, Radio Galaxies, X Ray Spectra, Background Radiation, Brightness Distribution, Cosmic Rays, Flux Density, Stellar Mass Ejection, X Ray Sources

Scientific paper

BL Lacertae objects may be Fanaroff-Riley type I (FR I) galaxies with a relativistic jet roughly parallel to the line of sight. The ratio of parent objects (FR Is) to beamed objects (BL Lacs) depends only on the jet velocity. Recently this ratio become observable. X-ray-flux-limited samples are used to demonstrate the viability of the beaming hypothesis. In the process, the X-ray luminosity functions of FR I galaxies and BL Lac objects are derived. Their respective contributions to the cosmic X-ray background radiation are calculated.

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