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- W3100564466 abstract "We present a study of the BAL outflows seen in quasar SDSS J1042+1646 (z = 0.978) in the rest-frame 500 -- 1050 $r{A}$ (EUV500) region. The results are based on the analysis of recent Hubble Space Telescope/Cosmic Origins Spectrograph observations. Five outflow systems are identified, where in total they include $sim$70 outflow troughs from ionic transitions. These include the first non-solar detections from transitions of O V*, Ne V*, Ar VI, Ca VI, Ca VII, and Ca VIII. The appearance of very high-ionization species (e.g., Ne VIII, Na IX, and Mg X) in all outflows necessitates at least two-ionization phases for the observed outflows. We develop an interactive Synthetic Spectral Simulation method to fit the multitude of observed troughs. Detections of density sensitive troughs (e.g., S IV* $lambda$ 657.32 $r{A}$ and the O V* multiplet) allow us to determine the distance of the outflows ($R$) as well as their energetics. Two of the outflows are at $R$ $simeq$ 800 pc and one is at $R$ $simeq$ 15 pc. One of the outflows has the highest kinetic luminosity on record ($dot{E_{k}}$ $ = 5times 10^{46}$ erg s$^{-1}$), which is 20% of its Eddington luminosity. Such a large ratio suggests that this outflow can provide the energy needed for active galactic nucleus feedback mechanisms." @default.
- W3100564466 created "2020-11-23" @default.
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- W3100564466 date "2020-03-16" @default.
- W3100564466 modified "2023-10-16" @default.
- W3100564466 title "<i>HST</i>/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. II. The Most Energetic Quasar Outflow Measured to Date" @default.
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- W3100564466 doi "https://doi.org/10.3847/1538-4365/ab596a" @default.
- W3100564466 hasPublicationYear "2020" @default.
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