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HST/COS Observations of Quasar Outflows in the 500–1050 Å Rest Frame. II. The Most Energetic Quasar Outflow Measured to Date
- Source :
- The Astrophysical Journal Supplement Series. 247:38
- Publication Year :
- 2020
- Publisher :
- American Astronomical Society, 2020.
-
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 ($\dot{E_{k}}$ $ = 5\times 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.<br />Comment: 18 pages, 12 figures, published in ApJS
- Subjects :
- Physics
010308 nuclear & particles physics
Astrophysics::High Energy Astrophysical Phenomena
Astronomy and Astrophysics
Quasar
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Rest frame
Astrophysics - Astrophysics of Galaxies
01 natural sciences
Space and Planetary Science
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Outflow
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Subjects
Details
- ISSN :
- 15384365
- Volume :
- 247
- Database :
- OpenAIRE
- Journal :
- The Astrophysical Journal Supplement Series
- Accession number :
- edsair.doi.dedup.....836af41618e540418458e874a9d03b62