Kavli Affiliate: Luis C. Ho
| First 5 Authors: Silpa S., P. Kharb, Luis C. Ho, C. M. Harrison,
| Summary:
We present polarization-sensitive images from the Karl G. Jansky Very Large
Array (VLA) at 5 GHz of 11 radio-quiet PG quasars. Based on the radio
morphology, spectral index and polarization properties from the VLA study,
coupled with the findings of our previous 685 MHz uGMRT data, we find the
presence of low-power jets on sub-arcsecond and arcsecond scales in 9 sources;
some show signatures of bent jets. The origin of radio emission remains unclear
in the remaining 2 sources. Of the 11 sources, linear polarization is detected
in four of them with fractional polarization ranging between 2% and 21%. In PG
1229+204, the inferred B-field direction is parallel to the local kpc-scale jet
direction. The inferred B-fields are transverse to the weak southward extension
in PG 0934+013. For PG 0050+124 and PG 0923+129, the relationship between the
B-field structure and radio outflow direction remains unclear. Localized or
small-scale jet-medium interactions can be inferred across the sample based on
the VLA jet kinetic power arguments and polarization data. These may have the
potential as a feedback mechanism. We find that the radio properties do not
show strong correlations with the star formation, [O III] and CO quantities
published in the literature. The lack of evidence of AGN feedback on the global
galaxy properties could be due to the relative time scales of AGN activity and
those over which any impact might be taking place.
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