The MRC/1 Jy Survey and Radio Source Unification

Details The MRC/1 Jy Survey and Radio Source Unification The MRC/1 Jy Survey and Radio Source Unification

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...18911806m&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #118.06; Bulletin of the American Astronomical Society, Vol. 28, p.1431

Astronomy and Astrophysics

Astronomy

Scientific paper

We have recently completed a flux limited survey of radio sources defined by S(408MHz) = 1Jy and sky location. The sample, the MRC/1 Jy survey, is essentially completely identified and is composed of quasars (20%), BL Lac objects (1%) and radio galaxies (79%). Spectroscopic redshifts are in hand for > 90% of the quasars and approximately 70% of the radio galaxies. We show that the linear size distributions of the quasars and radio galaxies is in serious conflict with the orientation based unified model of radio galaxies and quasars. We compare the linear size distributions of our 1Jy sample with the 3CRR and separate the redshift and power dependencies, and show that the source sizes decrease with both increasing redshift and with declining radio power. We conclude that the apparent linear size is a poor orientation indicator.

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