Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/26637
Titolo: | The Complex Circumnuclear Environment of the Broad-line Radio Galaxy 3C 390.3 Revealed by Chandra HETG | Autori: | Tombesi, Francesco Reeves, J. N. Kallman, T. Reynolds, C. S. Mushotzky, R. F. BRAITO, Valentina Behar, E. Leutenegger, M. A. CAPPI, MASSIMO |
Data pubblicazione: | 2016 | Rivista: | THE ASTROPHYSICAL JOURNAL | Numero: | 830 | Fascicolo: | 2 | Da pagina:: | 98 | 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 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 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 Kα is 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<SUP>-1</SUP> cm, column density logN <SUB>H</SUB> = 20.7 ± 0.1 cm<SUP>-2</SUP>, and outflow velocity v <SUB>out</SUB> < 150 km s<SUP>-1</SUP> and (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. | URI: | http://hdl.handle.net/20.500.12386/26637 | URL: | https://iopscience.iop.org/article/10.3847/0004-637X/830/2/98 | ISSN: | 0004-637X | DOI: | 10.3847/0004-637X/830/2/98 | Bibcode ADS: | 2016ApJ...830...98T | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
Tombesi_2016_ApJ_830_98.pdf | Pdf editoriale | 992.87 kB | Adobe PDF | Visualizza/apri |
Page view(s)
52
controllato il 23-apr-2024
Download(s)
13
controllato il 23-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.