SDSS J153636.22+044127.0 and its analogues: shocked outflows, not active binary black holes

Abstract

The binary emission-line system, particularly the binary broad-line emission system, is considered the most effective indicator of the black hole binary. A plausible example of such a system, SDSS J153636.22+044127.0, was reported as the first known object with two hydrogen Balmer broad-line systems, which are interpreted to be the result of broad-line regions around a pair of black holes (Boroson \& Lauer 2009). Here, we show the follow-up optical and near-infrared spectral observations of SDSS J153636.22+044127.0 and its analogues. In these objects, the broad hydrogen Balmer and Paschen, He I and Mg II lines share the same peculiar emission-line profile (including a blue system, a red system and a double-peaked disk-line component); however, the invariance in the large time interval, the absence of the blue system in He I $\lambda$10830 profile and the abnormally strong emission of the hydrogen Pa$\beta$ blue system oppose the binary proposal. We suggest that these unique broad lines arise from the AGN emission-line region and the shock-heated outflowing gases rather than a binary system of two active black holes.

arXiv comment17 pages, 6 figures, 1 table, ApJ accepted

References in corpus (24)

• The Sloan Digital Sky Survey: Technical Summary
• The Seventh Data Release of the Sloan Digital Sky Survey
• A Method of Correcting Near-Infrared Spectra for Telluric Absorption
• The MAPPINGS III Library of Fast Radiative Shock Models
• A Structure for Quasars
• ESI, a new Keck Observatory echellette spectrograph and imager
• Updating quasar bolometric luminosity corrections
• A diversity of dusty AGN tori: Data release for the VLTI/MIDI AGN Large Program and first results for 23 galaxies
• Double-Peaked Low-Ionization Emission Lines in Active Galactic Nuclei
• A Candidate Sub-Parsec Supermassive Binary Black Hole System
• The Quasar Outflow Contribution to AGN Feedback: VLT Measurements of SDSS J0318-0600
• HST STIS Ultraviolet Spectral Evidence of Outflow in Extreme Narrow-line Seyfert 1 Galaxies: II. Modeling and Interpretation
• Mapping the radial structure of AGN tori
• The Near-Infrared Broad Emission Line Region of Active Galactic Nuclei -- I. The Observations
• Rejection of the Binary Broad-Line Region Interpretation of Double-Peaked Emission Lines in Three Active Galactic Nuclei
• FIRST-2MASS Sources Below the APM Detection Threshold: A Population of Highly Reddened Quasars
• The Quasar SDSS J1536+0441: An Unusual Double-Peaked Emitter
• HST Images and KPNO Spectroscopy of the Binary Black Hole Candidate SDSS J153636.22+044127.0
• The Quasar SDSS J153636.22+044127.0: A Double-Peaked Emitter in a Candidate Binary Black-Hole System
• Discovery of Radio Emission from the Quasar SDSS J1536+0441, a Candidate Binary Black-Hole System
• Probing the nature of the massive black hole binary candidate SDSS J1536+0441
• VLBI detection of an AGN pair in the binary black hole candidate SDSS J1536+0441
• SDSS J163459.82+204936.0: A Ringed Infrared-Luminous Quasar with Outflows in both Absorption and Emission Lines
• Ultraviolet and Optical Emission-line Outflows in the Heavily Obscured Quasar SDSS J000610.67+121501.2: At the Scale of the Dusty Torus and Beyond

Cited by in corpus (6)

• Reverberation Mapping Measurements of Black Hole Masses and Broad-Line Region Kinematics in Mrk 817 and NGC 7469
• First observation of double-peaked O I emission in the near-infrared spectrum of an active galaxy
• A correction method for the telluric absorptions and application to Lijiang Observatory
• Time Evolution of Mg II in SDSS J2320+0024: Implications for a Subparsec Binary Supermassive Black Hole System
• The Quasar 3C 47: Extreme Population B Jetted Source With Double-peaked Profile
• Ultradense Gases beyond Dusty Torus in a Partially Obscured Quasar