{ "id": "0907.0405", "version": "v2", "published": "2009-07-02T15:42:50.000Z", "updated": "2009-10-06T14:47:29.000Z", "title": "First high-resolution detection of a warm absorber in the Broad Line Radio Galaxy 3C 382", "authors": [ "E. Torresi", "P. Grandi", "A. L. Longinotti", "M. Guainazzi", "G. G. C. Palumbo", "F. Tombesi", "A. Nucita", ")" ], "comment": "5 pages, 3 figures, 1 table, accepted for publication in MNRAS Letters", "categories": [ "astro-ph.HE" ], "abstract": "Recent high-resolution measurements suggest that the soft X-ray spectrum of obscured Radio Galaxies (RG) exhibits signatures of photoionised gas (e.g. 3C 445 and 3C 33) similar to those observed in radio-quiet obscured Active Galactic Nuclei (AGN). While signatures of warm absorbing gas covering a wide range of temperature and ionisation states have been detected in about one half of the population of nearby Seyfert 1 galaxies, no traces of warm absorber gas have been reported to date in the high-resolution spectra of Broad Line Radio Galaxies (BLRG). We present here the first detection of a soft X-ray warm absorber in the powerful FRII BLRG 3C 382 using the Reflection Grating Spectrometer (RGS) on-board XMM-Newton. The absorption gas appears to be highly ionised, with column density of the order of 10^{22} cm^{-2}, ionisation parameter log\\xi>2 erg cm s^{-1} and outflow velocities of the order of 10^{3} km s^{-1}. The absorption lines may come from regions located outside the torus, however at distances less than 60 pc. This result may indicate that a plasma ejected at velocities near the speed of light and a photoionised gas with slower, outflow velocities can coexist in the same source beyond the Broad Line Regions.", "revisions": [ { "version": "v2", "updated": "2009-10-06T14:47:29.000Z" } ], "analyses": { "keywords": [ "broad line radio galaxy 3c", "first high-resolution detection", "warm absorber", "obscured active galactic nuclei" ], "tags": [ "journal article" ], "publication": { "doi": "10.1111/j.1745-3933.2009.00773.x", "journal": "Monthly Notices of the Royal Astronomical Society", "year": 2010, "month": "Jan", "volume": 401, "number": 1 }, "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable", "inspire": 824779, "adsabs": "2010MNRAS.401L..10T" } } }