2015/09/25 by Anupreeta More, More, Anupreeta, Masamune Oguri +34 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae
paper · pdf · doi:10.48550/arxiv.1509.07917
openalex publication_date 2015/09/25 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
We report the discovery of 13 confirmed two-image quasar lenses from a\nsystematic search for gravitationally lensed quasars in the SDSS-III Baryon\nOscillation Spectroscopic Survey (BOSS). We adopted a methodology similar to\nthat used in the SDSS Quasar Lens Search (SQLS). In addition to the confirmed\nlenses, we report 11 quasar pairs with small angular separations ( lesssim2")\nconfirmed from our spectroscopy, which are either projected pairs, physical\nbinaries, or possibly quasar lens systems whose lens galaxies have not yet been\ndetected. The newly discovered quasar lens system, SDSS J1452+4224 at\nzs\≈4.8 is one of the highest redshift multiply imaged quasars found to\ndate. Furthermore, we have over 50 good lens candidates yet to be followed up.\nOwing to the heterogeneous selection of BOSS quasars, the lens sample presented\nhere does not have a well-defined selection function.\n