@article{86010de1845f418d9c54e28559f7110a,
title = "Very Long Baseline Array Imaging of Type-2 Seyferts with Double-peaked Narrow Emission Lines: Searches for Sub-kpc Dual AGNs and Jet-powered Outflows",
abstract = "This paper presents Very Long Baseline Array (VLBA) observations of 13 double-peaked [O iii] emission-line type-2 active galactic nuclei (AGNs) at redshifts 0.06 < z < 0.41 (with a median redshift of z ∼ 0.15) identified in the Sloan Digital Sky Survey. Such double-peaked emission-line objects may result from jets or outflows from the central engine or from a dual AGN. The VLBA provides an angular resolution of ≲10 pc at the distance of many of these galaxies, sufficient to resolve the radio emission from extremely close dual AGNs and to contribute to understanding the origin of double-peaked [O iii] emission lines. Of the 13 galaxies observed at 3.6 cm (8.4 GHz), we detect six at a 1σ sensitivity level of ∼0.15 mJy beam-1, two of which show clear jet structures on scales ranging from a few milliarcseconds to tens of milliarcseconds (corresponding to a few pc to tens of pc at a median redshift of 0.15). We suggest that radio-loud, double-peaked emission-line type-2 AGNs may be indicative of jet produced structures, but a larger sample of double-peaked [O iii] AGNs with high angular resolution radio observations will be required to confirm this suggestion.",
keywords = "black hole physics, galaxies: Seyfert, galaxies: active, galaxies: interactions, galaxies: nuclei, radio continuum: galaxies",
author = "Xin Liu and Lazio, {T. Joseph W.} and Yue Shen and Strauss, {Michael A.}",
note = "Funding Information: Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS website ishttp://www.sdss.org/. Funding Information: We thank S.Burke-Spolaor for helpful discussions and the anonymous referee for a careful and useful report that improved the paper. Y.S. acknowledges support from the Alfred P. Sloan Foundation and NSF grant 1715579. Funding Information: The NANOGrav project receives support from National Science Foundation Physics Frontier Center award number 1430284. The Long Baseline Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of NASA{\textquoteright}s Astrophysics Data System. This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC), provided by NASA{\textquoteright}s Goddard Space Flight Center. This research has made use of data obtained from the Chandra Source Catalog, provided by the Chandra X-ray Center (CXC) as part of the Chandra Data Archive. Part of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Publisher Copyright: {\textcopyright} 2018. The American Astronomical Society. All rights reserved..",
year = "2018",
month = feb,
day = "20",
doi = "10.3847/1538-4357/aaab47",
language = "English (US)",
volume = "854",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",
}