Show simple item record

dc.contributor.authorDanehkar, Ashkbiz
dc.contributor.authorNowak, Michael A.
dc.contributor.authorLee, Julia C.
dc.contributor.authorKriss, Gerard A.
dc.contributor.authorYoung, Andrew J.
dc.contributor.authorHardcastle, Martin J.
dc.contributor.authorChakravorty, Susmita
dc.contributor.authorFang, Taotao
dc.contributor.authorNeilsen, Joseph
dc.contributor.authorRahoui, Farid
dc.contributor.authorSmith, Randall K.
dc.date.accessioned2018-06-06T17:09:22Z
dc.date.available2018-06-06T17:09:22Z
dc.date.issued2018-02-02
dc.identifier.citationDanehkar , 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.issn0004-637X
dc.identifier.otherPURE: 13484409
dc.identifier.otherPURE UUID: a331e6bd-5997-4ffe-881d-293bf5813930
dc.identifier.otherArXiv: http://arxiv.org/abs/1712.07118v2
dc.identifier.otherScopus: 85041854348
dc.identifier.urihttp://hdl.handle.net/2299/20149
dc.descriptionThis 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.abstractWe 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.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.rightsOpen
dc.subjectX-rays: galaxies
dc.subjectgalaxies: Seyfert
dc.subjectgalaxies: active
dc.subjectquasars: absorption lines
dc.subjectquasars: individual (PG 1211+143)
dc.subjectAstronomy and Astrophysics
dc.subjectSpace and Planetary Science
dc.titleThe Ultra-Fast Outflow of the Quasar PG 1211+143 as Viewed by Time-Averaged Chandra Grating Spectroscopyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85041854348&partnerID=8YFLogxK
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2018-02-02
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.3847/1538-4357/aaa427
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record