A Search for Binary Active Galactic Nuclei: Double-Peaked [OIII] AGN in the Sloan Digital Sky Survey

Understand

We present AGN from the Sloan Digital Sky Survey (SDSS) having double-peaked profiles of [OIII] 5007,4959 and other narrow emission-lines, motivated by the prospect of finding candidate binary AGN.

• These objects were identified by means of a visual examination of 21,592 quasars at z < 0.7 in SDSS Data Release 7 (DR7).
• Of the spectra with adequate signal-to-noise, 148 spectra exhibit a double-peaked [OIII] profile.
• Of these, 86 are Type 1 AGN and 62 are Type 2 AGN.