Orientation Effects in the X-ray Properties of High-z, 3CRR Quasars

Details Orientation Effects in the X-ray Properties of High-z, 3CRR Quasars Orientation Effects in the X-ray Properties of High-z, 3CRR Quasars

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.206w&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Physics

Agn Jets

Scientific paper

A critical problem in understanding active galaxies is separation of intrinsic physical differences from observed differences due to orientation. Relativistic motion in powerful radio sources produces a significant level of anisotropic emission at all but the lowest frequencies. Obscuration is also anisotropic and strongly frequency-dependent. Combined, these two effects result in complex selection effects for observations in most wavebands, and there are few ways to select a sample that is sufficiently unbiased to test orientation effects as predicted by unification models. Low-frequency radio emission is one way to select an orientation-unbiased sample, albeit limited to the minority of AGN with strong radio emission. Chandra observations of a complete, flux-limited sample of 38 high-redshift 3CRR sources, 1

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