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A VLA–GMRT look at 11 powerful FR II quasars

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dc.contributor.author Vaddi, Sravani
dc.contributor.author Kharb, P
dc.contributor.author Daly, R. A
dc.contributor.author O’Dea, C P
dc.contributor.author Baum, S. A
dc.contributor.author Deo, D.K
dc.contributor.author Barbusca, T.C
dc.contributor.author Murali, Chintak
dc.date.accessioned 2020-11-20T13:28:42Z
dc.date.available 2020-11-20T13:28:42Z
dc.date.issued 2019-03
dc.identifier.citation Monthly Notices of the Royal Astronomical Society, Vol. 484, No. 1, pp. 385-408 en_US
dc.identifier.issn 1365-2966
dc.identifier.uri http://prints.iiap.res.in/handle/2248/7335
dc.description Restricted Access © Royal Astronomical Society https://doi.org/10.1093/mnras/sty3494 en_US
dc.description.abstract We present results from 1.4 and 5 GHz observations at matched resolution with the Karl G. Jansky Very Large Array (VLA) of 11 powerful 3C FR II quasars. We examine the 11 quasars along with a sample of 13 narrow-line FR II radio galaxies and find that radio-loud unification largely holds but environmental effects cannot be ignored. The radio core prominence, largest linear size, and axial ratio parameter values indicate that quasars are at relatively smaller angles compared to the radio galaxies and thus probe orientation. Lack of correlation between statistical orientation indicators such as misalignment angle and radio core prominence, and larger lobe distortions in quasars compared to radio galaxies suggest that intrinsic/environment effects are also at play. Some of 150 MHz observations with the TGSS–GMRT reveal peculiar lobe morphologies in these FR II sources, suggesting complex past lives and possibly restarted AGN activity. Using the total 150 MHz flux density we estimate the time-averaged jet kinetic power in these sources and this ranges from (1–38) × 1045 erg s−1, with 3C 470 having the highest jet kinetic power. en_US
dc.language.iso en en_US
dc.publisher Oxford University Press on behalf of the Royal Astronomical Society en_US
dc.subject Techniques: interferometric en_US
dc.subject Galaxies: active en_US
dc.subject Galaxies: high-redshift en_US
dc.subject Quasars: general en_US
dc.subject Radio continuum: galaxies en_US
dc.title A VLA–GMRT look at 11 powerful FR II quasars en_US
dc.type Article en_US

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