The VLBA Imaging and Polarimetry Survey at 5 GHz

Abstract

We present the first results of the VLBA Imaging and Polarimetry Survey (VIPS), a 5 GHz VLBI survey of 1,127 sources with flat radio spectra. Through automated data reduction and imaging routines, we have produced publicly available I, Q, and U images and have detected polarized flux density from 37% of the sources. We have also developed an algorithm to use each source's I image to automatically classify it as a point-like source, a core-jet, a compact symmetric object (CSO) candidate, or a complex source. The mean ratio of the polarized to total 5 GHz flux density for VIPS sources with detected polarized flux density ranges from 1% to 20% with a median value of about 5%. We have also found significant evidence that the directions of the jets in core-jet systems tend to be perpendicular to the electric vector position angles (EVPAs). The data is consistent with a scenario in which ~24% of the polarized core-jets have EVPAs that are anti-aligned with the directions of their jet components and which have a substantial amount of Faraday rotation. In addition to these initial results, plans for future follow-up observations are discussed.

36 pages, 3 tables, 13 figures; accepted for publication in ApJ

References in corpus (2)

• A Compact Supermassive Binary Black Hole System
• Observations of Selected AGN with H.E.S.S

Cited by in corpus (75)

• Compact steep-spectrum and peaked-spectrum radio sources
• VLBI-Gaia offsets favor parsec-scale jet direction in Active Galactic Nuclei
• The HI absorption "Zoo"
• Radio observations of active galactic nuclei with mm-VLBI
• The WEBT Campaign on the Blazar 3C279 in 2006
• A 33 GHz Survey of Local Major Mergers: Estimating the Sizes of the Energetically Dominant Regions from High Resolution Measurements of the Radio Continuum
• Stellar Photometric Structures of the Host Galaxies of Nearby Type 1 Active Galactic Nuclei
• The wide-field VLBA calibrator survey -- WFCS
• The first estimate of radio jet proper motion at z>5
• On the nature of bright compact radio sources at z>4.5
• The Radio Fundamental Catalogue. I. Astrometry
• BAT AGN Spectroscopic Survey -- XV: The High Frequency Radio Cores of Ultra-hard X-ray Selected AGN
• Investigation on Young radio AGNs based on SDSS spectroscopy
• Characteristics of EGRET Blazars in the VLBA Imaging and Polarimetry Survey (VIPS)
• The polarization in the JVAS/CLASS flat-spectrum radio sources: II. A search for aligned radio polarizations
• Compact Bright Radio-loud AGNs -- III. A Large VLBA Survey at 43 GHz
• Evidence from the Very Long Baseline Array that J1502SE/SW are Double Hotspots, not a Supermassive Binary Black Hole
• An Improved Test of the Binary Black Hole Hypothesis for Quasars with Double-peaked Broad Balmer Lines
• High Resolution Radio Astronomy Using Very Long Baseline Interferometry
• Radio-loud Quasars above Redshift 4: VLBI Imaging of an Extended Sample
• Direction of Parsec-Scales Jets for 9220 Active Galactic Nuclei
• Radio spectra of bright compact sources at z>4.5
• Discovery of Very-high-energy Gamma-ray Emissions from the Low Luminosity AGN NGC 4278 by LHAASO
• Tracing Milky Way scattering by compact extragalactic radio sources
• Parsec-scale properties of steep and flat spectrum extragalactic radio sources from a VLBA survey of a complete north polar cap sample
• Giant Metrewave Radio Telescope detection of two new HI 21cm absorbers at $z\approx 2$
• Radio Jet Proper-motion Analysis of Nine Distant Quasars above Redshift 3.5
• The MASIV Survey IV: relationship between intra-day scintillation and intrinsic variability of radio AGNs
• A shrinking Compact Symmetric Object: J11584+2450?
• A compact symmetric radio source born at one-tenth the current age of the Universe
• On the Doppler boosting in the compact radio jet of the distant blazar J1026+2542 at z=5.3
• Deep Extragalactic VLBI-Optical Survey (DEVOS) II. Efficient VLBI detection of SDSS quasars
• Observations by GMRT at 323 MHz of radio-loud quasars at $z>5$
• The LOFAR view of NGC 3998, a sputtering AGN
• TXS 1206+549: a new $\gamma$-ray detected narrow-line Seyfert 1 galaxy at redshift 1.34?
• A multi-frequency study of sub-parsec jets with the Event Horizon Telescope
• The evolution of cold neutral gas and the star formation history
• Parsec-scale HI absorption structure in a low-redshift galaxy seen against a Compact Symmetric Object
• Soft gamma-ray selected giant radio galaxies: an update
• X-ray Emission of the $\gamma$-ray Loud Young Radio Galaxy NGC 3894
• A VLBI survey of compact Broad Absorption Lines (BAL) quasars with BALnicity Index BI=0
• The SUPERCOLD-CGM survey: \\ I. Probing the extended CO(4-3) Emission of the Circumglactic medium in a sample of 10 Enormous Ly$\alpha$ Nebulae at $z\sim 2$
• A two-sided but significantly beamed jet in the supercritical accretion quasar IRAS F11119+3257
• VLBA 24 and 43 GHz observations of massive binary black hole candidate PKS 1155+251
• MOJAVE XXI. Decade-long linear polarization variability in AGN jets at parsec scales
• The Science Case for Simultaneous mm-Wavelength Receivers in Radio Astronomy
• Local alignments of parsec-scale AGN radiojets
• Comparing extragalactic megahertz-peaked spectrum and gigahertz-peaked spectrum sources
• Optical and infrared polarimetry of the transient LMXB Cen X-4 in quiescence
• Astrometric Apparent Motion of High-redshift Radio Sources
• uGMRT HI 21-cm absorption observations of two extremely inverted spectrum sources
• Global alignments of parsec-scale AGN radio jets and their polarization planes
• J1110+4817 -- a compact symmetric object candidate revisited
• Jets in AGN at extremely high redshifts
• Peculiar Radio Structures in the Central Regions of Galaxy Cluster Abell 585
• Parsec-scale jet direction evolution in AGNs
• The most compact bright radio-loud AGN -- I. A new target sample selected for the space VLBI
• The radio structure of the $\gamma$-ray narrow-line Seyfert 1 galaxy SDSS J211852.96$-$073227.5
• The FAST HI 21-cm absorption blind survey. II. -- Statistic Exploration for Associated and Intervening systems
• A mechanism to explain Galaxy alignment over a range of scales
• VLBI observations of a flared optical quasar CGRaBS J0809+5341
• Investigating orientation effects considering angular resolution for a sample of radio-loud quasars using VLA observations
• A Statistical Description of AGN Jet Evolution from the VLBA Imaging and Polarimetry Survey (VIPS)
• Superluminal Motion and Jet Parameters in the Gamma-ray-Emitting Narrow-Line Seyfert 1 Galaxy TXS 1206+549
• Simulations and Observations of the Microwave Universe
• A Search for Blazar Activity in Broad-Absorption-Line Quasars
• VLBI Analysis of a Potential High-Energy Neutrino Emitter Blazar
• Superluminal Motion and Jet Parameters in the High-Redshift Blazar J1429+5406
• High resolution studies of Broad Absorption Line radio-loud quasars
• The use of astronomy VLBA campaign MOJAVE for geodesy
• High-resolution monitoring of parsec-scale jets in the Fermi era
• Imaging Sources in the Third Realization of the International Celestial Reference Frame
• Revisiting the angular size-redshift cosmological test with milliarcsecond radio structures in active galactic nuclei
• Three in One: The VLBI Radio View of the X-ray Quasar RX J1456.0+5048
• VIPCALs: A fully automated calibration pipeline for very long baseline interferometry data