The wide-angle outflow of the lensed z = 1.51 AGN HS 0810+2554

Journal Article · Fri Jun 10 04:00:00 EDT 2016 · Astrophysical Journal

DOI:https://doi.org/10.3847/0004-637X/824/1/53· OSTI ID:22868998

Chartas, G.; Strickland, S. ^[1]; Cappi, M. ^[2]; Hamann, F. ^[3]; Eracleous, M. ^[4]; Giustini, M. ^[5]

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1. Department of Physics and Astronomy, College of Charleston, Charleston, SC, 29424 (United States)
2. INAF-Istituto di Astrofisica Spaziale e Fisica cosmica di Bologna, via Gobetti 101, I-40129, Bologna (Italy)
3. Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States)
4. Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States)
5. SRON—Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht (Netherlands)

We present results from X-ray observations of the gravitationally lensed z = 1.51 active galactic nucleus (AGN) HS 0810+2554 performed with the Chandra X-ray Observatory and XMM-Newton. Blueshifted absorption lines are detected in both observations at rest-frame energies ranging between ∼1 and 12 keV at ≳99% confidence. The inferred velocities of the outflowing components range between ∼0.1c and ∼0.4c. A strong emission line at ∼6.8 keV that is accompanied by a significant absorption line at ∼7.8 keV is also detected in the Chandra observation. The presence of these lines is a characteristic feature of a P-Cygni profile supporting the presence of an expanding, outflowing, highly ionized iron absorber in this quasar. Modeling of the P-Cygni profile constrains the covering factor of the wind to be ≳0.6, assuming disk shielding. A disk-reflection component is detected in the XMM-Newton observation accompanied by blueshifted absorption lines. The XMM-Newton observation constrains the inclination angle to be <45° at 90% confidence, assuming that the hard excess is due to blurred reflection from the accretion disk. The detection of an ultrafast and wide-angle wind in an AGN with intrinsic narrow absorption lines (NALs) would suggest that quasar winds may couple efficiently with the intergalactic medium and provide significant feedback if ubiquitous in all NAL and broad absorption line (BAL) quasars. We estimate the mass-outflow rate of the absorbers to lie in the range of 1.5–3.4 M {sub ⊙} yr{sup −1} for the two observations. We find that the fraction of kinetic to electromagnetic luminosity released by HS 0810+2554 is large (ϵ {sub k} = 9{sub −6}{sup +8}), which suggests that magnetic driving is likely a significant contributor to the acceleration of this outflow.

• OSTI ID: 22868998
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 824; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ABSORPTION
ACCRETION DISKS
COMPUTERIZED SIMULATION
DETECTION
EMISSION
GALAXY NUCLEI
GRAVITATIONAL LENSES
INCLINATION
IRON IONS
LUMINOSITY
MASS
QUASARS
REFLECTION
STELLAR WINDS
VELOCITY
X RADIATION
X-RAY GALAXIES