Quasars non cosmological red shift.

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The discussion centers on the possibility that some quasars may not be at the distances indicated by their redshifts, suggesting they could have significant non-cosmological redshift components. Observations imply that these quasars might be ejected from local galaxies and could evolve into new galaxies. A proposed test involves analyzing the spectral energy distribution of quasar host galaxies, predicting that ejected quasars would show distinct characteristics compared to typical low-redshift quasar hosts. The study suggests that if ejected quasars exist, their host galaxies would either be absent, consist of ionized gas, or contain only young stars. This research aims to provide a framework for testing the existence of these ejected quasars through optical and near-infrared photometry.
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http://arxiv.org/PS_cache/astro-ph/pdf/0506/0506115.pdf

Title: On quasar host galaxies as tests of non-cosmological redshifts
Authors: E. Zackrisson
Comments: 9 pages, 4 figures
Journal-ref: MNRAS 359 (2005), 1193

Despite a general consensus in the astronomical community that all quasars are located at the distances implied by their redshifts, a number of observations still challenge this interpretation, possibly indicating that some subpopulation of quasars may harbour significant redshift components not related to the expansion of the universe. It has been suggested that these objects may have been ejected from local galaxies and are likely to evolve into new galaxies themselves. Here, a test of such exotic scenarios is proposed, based on the spectral energy distribution of the galaxies hosting quasars with suspected ejection origin. Provided that the time scales over which the ejected objects manifest themselves as quasars is short, one would in the framework of ejection scenarios expect to find either no quasar host galaxy, a pseudo-host consisting of gas ionized by the quasar, or a host galaxy consisting of young stars only. It is argued that the spectral energy distributions corresponding to the latter two options should differ significantly from those of most quasar host galaxies detected at low redshift so far, thus providing a potential test of the claimed existence of ejected quasars. A minimal implementation of this test, involving optical and near-IR broadband photometry, is suggested.
 
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