Relativistic beaming in the central components of double radio quasars

Kapahi, V. K. ; Saikia, D. J. (1982) Relativistic beaming in the central components of double radio quasars Journal of Astrophysics and Astronomy, 3 (4). pp. 465-483. ISSN 0250-6335

[img]
Preview
PDF - Publisher Version
1MB

Official URL: http://www.ias.ac.in/jarch/jaa/3/465-483.pdf

Related URL: http://dx.doi.org/10.1007/BF02714886

Abstract

Using a large sample of 78 well-observed double quasars, we have investigated several consequences of the relativistic beaming model. In this model the ratio of the strengths of the central component and outer lobes of a double source depends on whether the jet axis lies close to or away from the line of sight, If this is the actual situation, the fraction of emission from the core, fc, may be used as a statistical measure of the orientation of the source and should be correlated with other source parameters which also depend on the inclination of the jet axis to the line of sight. We find fc to be anticorrelated with the overall projected linear size of the extended emission but to exhibit a positive correlation with both the observed degree of misalignment from a collinear double structure, and the ratio of separations of the outer hotspots from the central component. As might be expected from these relationships, we also find sources of smaller projected linear sizes to appear more misaligned and the degree of misalignment to be correlated with the ratio of separations of the outer hotspots. All these correlations are consistent with the predictions of the relativistic beaming model.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Quasars; Relativistic Beaming; Active Galactic Nuclei; Extragalactic Radio Sources
ID Code:28819
Deposited On:20 Dec 2010 08:16
Last Modified:17 May 2016 11:50

Repository Staff Only: item control page