The Relationship between Radio Luminosity and Core-Dominance Parameter for XBLs

Details The Relationship between Radio Luminosity and Core-Dominance Parameter for XBLs The Relationship between Radio Luminosity and Core-Dominance Parameter for XBLs

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011japa...32...59w&link_type=abstract

Journal of Astrophysics and Astronomy, Volume 32, Issue 1-2, pp. 59-60

Astronomy and Astrophysics

Astrophysics

Galaxies: Bl Lacertae Objects: General, Galaxies: Fundamental Parameters, Galaxies: Jet, Galaxies—Bl Lacertae Objects—General, Galaxies—Fundamental Parameters, Galaxies—Jet

Scientific paper

In this work, we investigate the correlation between the luminosity and the core-dominance parameter for a sample of X-ray selected BL Lacertae objects (XBLs), and found that the extended luminosity is strongly anti-correlated with the core-dominance parameter while the core (or the total) luminosity is not correlated with the core-dominance parameter. If this is the case, then we can expect that the lower extended luminosity XBLs and their core luminosity is relatively higher. This can be explained by a relativistic beaming model since in this case, the viewing angle is smaller and the emissions dominate the extended emissions. Therefore, the anti-correlation is in fact the result of the relativistic beaming model.

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