Abstract
We investigate the implications of the luminosity selection effects in the amount of linear size evolution required to explain the observed angular size - redshift (θ - z) data of extragalactic radio soruces. We show that there is a difference in the nature of the dependence of linear size on radio luminosity between low (z ≤ 0.3) and high (z > 0.3) redshift sources which can be attributed to a change in the luminosity - redshift slope at z ∽ 0.3. This difference can account for the often quoted steeper size evolution found among radio galaxies than quasars which has been shown to have serious implications for the quasar/galaxy unification scheme in which lobe dominated quasars are powerful radio galaxies seen within 44.4° to the line of sight.
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© 1997 Kluwer Academic Publishers
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Ubachukwu, A.A. (1997). The Implications of Luminosity Selection Effects in the Interpretation of the Angular Size-Redshift Data. In: Schramm, D.N., Galeotti, P. (eds) Generation of Cosmological Large-Scale Structure. NATO ASI Series, vol 503. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0053-0_23
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DOI: https://doi.org/10.1007/978-94-009-0053-0_23
Publisher Name: Springer, Dordrecht
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