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Title: The relativistic jet of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS J1222+0413

Journal Article · · Monthly Notices of the Royal Astronomical Society
 [1];  [1];  [1];  [1];  [2];  [3];  [4];  [4]
  1. Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
  2. LUTH, Observatoire de Paris, CNRS, Université Paris Diderot, PSL Research University Paris, 5 place Jules Janssen, F-92195 Meudon, France
  3. Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 20138, USA, Black Hole Initiative at Harvard University, 20 Garden Street, Cambridge, MA 02138, USA
  4. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
+ Show Author Affiliations

ABSTRACT We present a multifrequency study of PKS J1222+0413 (4C +04.42), currently the highest redshift γ-ray emitting narrow-line Seyfert 1 (γ-NLS1). We assemble a broad spectral energy distribution (SED) including previously unpublished datasets: X-ray data obtained with the NuSTAR and Neil Gehrels Swift observatories; near-infrared, optical, and UV spectroscopy obtained with VLT X-shooter; and multiband radio data from the Effelsberg telescope. These new observations are supplemented by archival data from the literature. We apply physical models to the broad-band SED, parametrizing the accretion flow and jet emission to investigate the disc–jet connection. PKS J1222+0413 has a much greater black hole mass than most other NLS1s, MBH ≈ 2 × 108 M$$\odot$$, similar to those found in flat spectrum radio quasars (FSRQs). Therefore this source provides insight into how the jets of γ-NLS1s relate to those of FSRQs.

Sponsoring Organization:
USDOE
OSTI ID:
1515580
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 1 Vol. 487; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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