dc.contributor.author | Danehkar, Ashkbiz | |
dc.contributor.author | Nowak, Michael A. | |
dc.contributor.author | Lee, Julia C. | |
dc.contributor.author | Kriss, Gerard A. | |
dc.contributor.author | Young, Andrew J. | |
dc.contributor.author | Hardcastle, Martin J. | |
dc.contributor.author | Chakravorty, Susmita | |
dc.contributor.author | Fang, Taotao | |
dc.contributor.author | Neilsen, Joseph | |
dc.contributor.author | Rahoui, Farid | |
dc.contributor.author | Smith, Randall K. | |
dc.date.accessioned | 2018-06-06T17:09:22Z | |
dc.date.available | 2018-06-06T17:09:22Z | |
dc.date.issued | 2018-02-02 | |
dc.identifier.citation | Danehkar , A , Nowak , M A , Lee , J C , Kriss , G A , Young , A J , Hardcastle , M J , Chakravorty , S , Fang , T , Neilsen , J , Rahoui , F & Smith , R K 2018 , ' The Ultra-Fast Outflow of the Quasar PG 1211+143 as Viewed by Time-Averaged Chandra Grating Spectroscopy ' , The Astrophysical Journal , vol. 853 , no. 2 , 165 . https://doi.org/10.3847/1538-4357/aaa427 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | PURE: 13484409 | |
dc.identifier.other | PURE UUID: a331e6bd-5997-4ffe-881d-293bf5813930 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1712.07118v2 | |
dc.identifier.other | Scopus: 85041854348 | |
dc.identifier.uri | http://hdl.handle.net/2299/20149 | |
dc.description | This is an author-created, un-copyedited version of an article published in The Astrophysical Journal. The Version of Record is available online at https://doi.org/10.3847/1538-4357/aaa427 | |
dc.description.abstract | We present a detailed X-ray spectral study of the quasar PG 1211+143 based on Chandra High Energy Transmission Grating Spectrometer (HETGS) observations collected in a multi-wavelength campaign with UV data using the Hubble Space Telescope Cosmic Origins Spectrograph (HST-COS) and radio bands using the Jansky Very Large Array (VLA). We constructed a multi-wavelength ionizing spectral energy distribution using these observations and archival infrared data to create xstar photoionization models specific to the PG 1211+143 flux behavior during the epoch of our observations. Our analysis of the Chandra-HETGS spectra yields complex absorption lines from H-like and He-like ions of Ne, Mg, and Si, which confirm the presence of an ultra-fast outflow (UFO) with a velocity of approximately -17,300 km s -1 (outflow redshift z out ∼ -0.0561) in the rest frame of PG 1211+143. This absorber is well described by an ionization parameter and column density. This corresponds to a stable region of the absorber's thermal stability curve, and furthermore its implied neutral hydrogen column is broadly consistent with a broad Lyα absorption line at a mean outflow velocity of approximately -16,980 km s -1 detected by our HST-COS observations. Our findings represent the first simultaneous detection of a UFO in both X-ray and UV observations. Our VLA observations provide evidence for an active jet in PG 1211+143, which may be connected to the X-ray and UV outflows; this possibility can be evaluated using very-long-baseline interferometric observations. | en |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.subject | X-rays: galaxies | |
dc.subject | galaxies: Seyfert | |
dc.subject | galaxies: active | |
dc.subject | quasars: absorption lines | |
dc.subject | quasars: individual (PG 1211+143) | |
dc.subject | Astronomy and Astrophysics | |
dc.subject | Space and Planetary Science | |
dc.title | The Ultra-Fast Outflow of the Quasar PG 1211+143 as Viewed by Time-Averaged Chandra Grating Spectroscopy | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=85041854348&partnerID=8YFLogxK | |
rioxxterms.version | AM | |
rioxxterms.versionofrecord | https://doi.org/10.3847/1538-4357/aaa427 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |