Hot Spots in FR II Radio Galaxies and Quasars with 0.3 ≤ z ≤ 2.0

Details Hot Spots in FR II Radio Galaxies and Quasars with 0.3 ≤ z ≤ 2.0 Hot Spots in FR II Radio Galaxies and Quasars with 0.3 ≤ z ≤ 2.0

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21630406f&link_type=abstract

American Astronomical Society, AAS Meeting #216, #304.06; Bulletin of the American Astronomical Society, Vol. 41, p.852

Astronomy and Astrophysics

Astronomy

Scientific paper

In previous studies, we have reported high-resolution VLA observations at 8.4 GHz of five FR II radio galaxies (RGs) and ten FR II quasars (QSRs) out of a sample of 13 RGs and 13 QSRs. In this study we present the observations of the remaining sources, i.e, eight RGs (3C 20, 3C 22, 3C 34, 3C 55, 3C 252, 3C 325, 3C 356, and 3C441) and 3 QSRs (3C 47, 3C 68.1, and 3C 334). The main aim of this work is to analyze the radio properties of hot spots (edged or recessed, size, and asymmetry) in these 26 radio sources in order to check if hot spots can be used as an orientation indicator to differentiate between RGs and QSRs in light of the unification model of Barthel. The overall picture is that our objects have more edged hot spots than recessed hot spots with the jetted sources having more recessed hot spots than the unjetted sources. We discuss the implication of this result in light of the standard unified model.

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