Discovery of Probable Relativistic Fe Emission and Absorption in the Cloverleaf Quasar H 1413+117
- 1 June 2007
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 661 (2), 678-692
- https://doi.org/10.1086/516816
Abstract
We present results from Chandra and XMM-Newton observations of the low-ionization broad absorption line (LoBAL) quasar H 1413+117. Our spatial and spectral analysis of a recent deep Chandra observation confirms a microlensing event in a previous Chandra observation performed about five years earlier. We present constraints on the structure of the accretion flow in H 1413+117 based on the timescale of this microlensing event. Our analysis of the combined spectrum of all the images indicates the presence of two emission peaks at rest-frame energies of 5.35 and 6.32 keV, detected at the 98% and 99% confidence levels, respectively. The double-peaked Fe emission line is fit well with an accretion-disk line model; however, the best-fitting model parameters are neither well constrained nor unique. Additional observations are required to constrain the model parameters better and to confirm the relativistic interpretation of the double-peaked Fe Kα line. Another possible interpretation of the Fe emission is fluorescent Fe emission from the back side of the wind. The spectra of images C and D show significant high-energy broad absorption features that extend up to rest-frame energies of 9 and 15 keV, respectively. We propose that a likely cause of these differences is significant variability of the outflow on timescales that are shorter than the time delays between the images. The Chandra observation of H 1413+117 has made possible for the first time the detection of the inner regions of the accretion disk and/or wind and the high ionization component of the outflowing wind of a LoBAL quasar.Keywords
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This publication has 53 references indexed in Scilit:
- Quasar Feedback: The Missing Link in Structure FormationThe Astrophysical Journal, 2004
- ChandraObservations of the Cloverleaf Quasar H1413+117: A Unique Laboratory for Microlensing Studies of a LoBAL QuasarThe Astrophysical Journal, 2004
- Aborted jets and the X–ray emission of radio–quiet AGNsAstronomy & Astrophysics, 2003
- XMM‐NewtonReveals the Quasar Outflow in PG 1115+080The Astrophysical Journal, 2003
- Strong Gravitational Lensing and the Structure of Quasar OutflowsThe Astrophysical Journal, 2003
- Detection of an Iron Emission Feature from the Lensed Broad Absorption Line QSO H1413+117 at [CLC][ITAL]z[/ITAL][/CLC] = 2.56The Astrophysical Journal, 2001
- AChandraSurvey of Broad Absorption Line QuasarsThe Astrophysical Journal, 2001
- Properties of Radio‐selected Broad Absorption Line Quasars from the First Bright Quasar SurveyThe Astrophysical Journal, 2000
- Hubble Space TelescopeObservations of the Gravitationally Lensed Cloverleaf Broad Absorption Line QSO H1413+1143: ImagingThe Astrophysical Journal, 1997
- Polarization Clues to the Structure of Broad Absorption Line Quasi-Stellar ObjectsThe Astrophysical Journal, 1995