The rare extended radio-loud narrow-line Seyfert 1 galaxy SDSS J1030+5516 at high resolution
arXiv:1904.07540 · doi:10.1007/s10509-019-3563-7
Abstract
Recently, Rakshit et al. (2018) reported the discovery of SDSS J103024.95551622.7, a radio-loud narrow-line Seyfert 1 galaxy having a kpc scale double-lobed radio structure. Here we analyse archival radio interferometric imaging data taken with the Very Large Array (VLA) at 5 GHz, and with the Very Long Baseline Array (VLBA) at 4.3 and 7.6 GHz. Two hotspots and a compact core are detected with the VLA at arcsec scale, while a single milliarcsec-scale compact radio core is seen with the highest resolution VLBA observations. The Fermi Large Area Telescope did not detect -ray emission at the position of this source. In the mid-infrared, the Wide-field Infrared Survey Explorer satellite light curve, covering more than 7 years and including the most recent data points, hints on flux density variability at 3.4 m. Our findings support the notion that this source is a young version of Fanaroff-Riley type II radio galaxies.
arXiv comment9 pages, 2 figures; accepted for publication in Astrophysics and Space Science
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