Radio and mid-infrared properties of the blazar J1419$-$0838

Abstract

The radio quasar NVSS J141922$-$083830 (J1419$-$0838) was initially classified as an uncategorised blazar-type object, following its detection in the $\gamma$-ray band with the Fermi space telescope. Later, using multi-waveband observations and modeling, its was found to be a flat-spectrum radio quasar (FSRQ). However, its radio emission has never been discussed in depth in the literature. Here we present a detailed analysis on the radio properties of J1419$-$0838 using archival interferometric imaging data at pc and kpc scales. We conclude that the flux density variations, the flat radio spectrum, the compact nature of the quasar structure at all scales, and the relativistic Doppler enhancement of the radio emission all support the previous classification as an FSRQ. We also investigated the short- and long-term mid-infrared (MIR) light curve of the quasar based on observations by the Wide-field Infrared Survey Explorer satellite, and found that there is significant variability on time-scales of days as well as years. Comparison of the MIR light curve to the times of previously reported $\gamma$-ray and optical flares shows no clear correlation between the events at different wavebands.

arXiv comment15 pages, 5 figures, 3 tables, accepted for publication in Astrophysics and Space Science

References in corpus (26)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Gaia mission
• The VizieR database of Astronomical Catalogues
• A Cosmology Calculator for the World Wide Web
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• Initial Performance of the NEOWISE Reactivation Mission
• GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey I: A low-frequency extragalactic catalogue
• Planck 2013 results. XXIX. Planck catalogue of Sunyaev-Zeldovich sources
• The Third Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• The Australia Telescope 20 GHz Survey: The Source Catalogue
• GLEAM: The GaLactic and Extragalactic All-sky MWA survey
• A Quick Look at the $3$GHz Radio Sky I. Source Statistics from the Very Large Array Sky Survey
• A Global 86GHz VLBI Survey of Compact Radio Sources
• Mid-infrared variability of changing-look AGN
• The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope -- Data Release 3
• The VLBA Galactic Plane Survey -- VGaPS
• The second catalog of flaring gamma-ray sources from the Fermi All-sky Variability Analysis
• ALMACAL IV: A catalogue of ALMA calibrator continuum observations
• Rapid Infrared Variability of Three Radio-loud Narrow-line Seyfert 1 Galaxies: A View from the Wide-field Infrared Survey Explorer
• The wide-field VLBA calibrator survey -- WFCS
• SDSS J211852.96-073227.5: a new γ-ray flaring narrow-line Seyfert 1 galaxy
• A southern-sky total intensity source catalogue at 2.3 GHz from S-band Polarisation All-Sky Survey data
• Mid-infrared Variability of Low-redshift Active Galactic Nuclei : Constraints on a Hot Dust Component with a Variable Covering Factor
• Optical spectroscopic characterization of Fermi blazar candidates of uncertain type with TNG and DOT: First Results
• A multiwavelength study of the flat spectrum radio-quasar NVSS J141922-083830 covering four flaring episodes
• Mid-infrared variability of the neutrino source blazar TXS 0506$+$056

Cited by in corpus (1)

• Zooming into the neutrino-associated blazar candidate J1718+4239