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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2019

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

Résumé

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 We assemble a broad spectral energy distribution (SED) including previously unpublished datasets: X-ray data obtained with the NuSTAR and Neil Gehrels Swift observatories; near-infrared, optical, and UV spectroscopy obtained with VLT X-shooter;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, M_BH ≈ 2 × 10^8 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.
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Dates et versions

hal-02144141 , version 1 (26-06-2023)

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Daniel Kynoch, Hermine Landt, Martin J. Ward, Chris Done, Catherine Boisson, et al.. The relativistic jet of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS J1222+0413. Monthly Notices of the Royal Astronomical Society, 2019, 487 (1), pp.181-197. ⟨10.1093/mnras/stz1193⟩. ⟨hal-02144141⟩
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