Results 21 to 30 of about 2,405 (218)
A sensitive submillimetre survey of broad absorption-line quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 Using the SCUBA bolometer array on the JCMT, we have carried out a submillimetre survey of Broad Absorption Line quasars (BALQs). The sample has been chosen to match, in redshift and optical luminosity, an existing benchmark 850um sample of radio-quiet quasars, allowing a direct comparison of the submm properties of BAL quasars relative to the parent ...
Priddey, R. S. +5 more
openaire +2 more sources
The Astrophysical Journal Letters, 2023 We report on the discovery of a rare case of spatially and kinematically resolved galactic-scale outflow at intermediate redshift based on VLT/MUSE optical integral field spectroscopic observation of the quasar HE 0238–1904.
Qinyuan Zhao, Junfeng Wang
doaj +1 more source
Microlensing of broad absorption line quasars
Monthly Notices of the Royal Astronomical Society, 1998 The physical nature of the material responsible for the high--velocity, broad-absorption line features seen in a small fraction of quasar spectra has been the subject of debate since their discovery. This has been especially compounded by the lack of observational probes of the absorbing region.
Lewis, Geraint F., Belle, Kunegunda E.
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The Astrophysical Journal, 2023 Broad absorption line quasars are actively accreting supermassive black holes that have strong outflows characterized by broad absorption lines in their rest-UV spectra.
Kaylie S. Green +7 more
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The Submillimeter Properties of Broad Absorption Line Quasars
The Astrophysical Journal, 2003 We have carried out the first systematic survey of the sub-millimeter properties of broad absorption line (BAL) quasars. 30 BAL quasars drawn from a homogeneously selected sample from the Sloan Digital Sky Survey at redshifts 2 2 sigma significance, four of which are at > 3 sigma significance.
Willott, Christopher +2 more
openaire +3 more sources
XMM-Newton spectroscopy of the highly polarized and luminous broad absorption line quasar CSO 755 [PDF]
, 2005 This article presents results from the XMM-Newton observations of the highly optically polarized broad absorption line quasar CSO ...
Comastri, A. +16 more
core +1 more source
The Astrophysical Journal Supplement Series, 2023 We report the fourth installment in the series of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) quasar survey, which includes quasars observed between 2017 September and 2021 June.
Jun-Jie Jin +12 more
doaj +1 more source
Spectropolarimetry of FIRST Broad Absorption Line Quasars [PDF]
The Astrophysical Journal, 1997 We present Keck spectropolarimetry of two rare low-ionization broad absorption line (BAL) quasars (QSOs), FIRST J084044.5+363328 and FIRST J155633.8+351758, that also exhibit narrow absorption lines from metastable excited levels of Fe II (iron Lo-BALs).
M. S. Brotherton +4 more
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The Astrophysical Journal, 2022 We analyze Very Large Telescope/UVES observations of the quasar SDSS J024221.87+004912.6. We identify four absorption outflow systems: a C iv broad absorption line (BAL) at v ≈ −18,000 km s ^−1 and three narrower low-ionization systems with centroid ...
Doyee Byun, Nahum Arav, Patrick B. Hall
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The X‐Ray Absorber in Broad Absorption Line Quasars
The Astrophysical Journal, 2000 11 pages, 6 figures, replacement of figure ...
Wang, T. G. +4 more
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