The complex circumnuclear environment of the broad-line radio galaxy 3C 390.3 revealed by Chandra HETG

Abstract

We present the first high spectral resolution X-ray observation of the broad-line radio galaxy 3C 390.3 obtained with the high energy transmission grating (HETG) spectrometer on board the Chandra X-ray Observatory. The spectrum shows complex emission and absorption features in both the soft X-rays and Fe K band. We detect emission and absorption lines in the energy range between E = 700-1000 eV associated with ionized Fe L transitions (Fe XVII-XX). An emission line at the energy of E=6.4 keV consistent with the Fe Kαis also observed. Our best-fit model requires at least three different components: (i) a hot emission component likely associated with the hot interstellar medium in this elliptical galaxy with temperature kT=0.5+/-0.1 keV; (ii) a warm absorber with ionization parameter logξ=2.3+/-0.5 erg s^{-1} cm, column density logN_H=20.7+/-0.1 cm^{-2}, and outflow velocity of v_{out}<150 km s^{-1}; (iii) a lowly ionized reflection component in the Fe K band likely associated with the optical broad line region or the outer accretion disk. These evidences suggest the possibility that we are looking directly down the ionization cone of this active galaxy and that the central X-ray source only photoionizes along the unobscured cone. This is overall consistent with the angle-dependent unified picture of active galactic nuclei.

Accepted for publication in ApJ

References in corpus (10)

• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• Wind from the black-hole accretion disk driving a molecular outflow in an active galaxy
• Black hole feedback in the luminous quasar PDS 456
• A fast and long-lived outflow from the supermassive black hole in NGC 5548
• Ultra-fast outflows in radio-loud active galactic nuclei
• Magnetically-Driven Accretion-Disk Winds and Ultra-Fast Outflows in PG1211+143
• Structure of the Accretion Flow in Broad-Line Radio Galaxies: The Case of 3C390.3
• The ASTRO-H X-ray Astronomy Satellite
• Further Evidence for the Accretion Disk Origination of the Double-Peaked Broad H$\alpha$ of 3C390.3
• An XMM-Newton View of the Radio Galaxy 3C 411

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