The Largest Quasar Lens Search using the Wide Field Survey Data

2010 Fiscal Year Final Research Report

• Project/Area Number: 21740151
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2010); The Institute of Physical and Chemical Research (2009)
• Principal Investigator: INADA Naohisa The University of Tokyo, 大学院・理学系研究科, 特任研究員 (20462658)
• Project Period (FY): 2009 – 2010
• Keywords: 重力レンズ / クエーサー / 暗黒エネルギー

Research Abstract

We have succeeded in discovering 14 lensed quasars using the data of the Sloan Digital Sky Survey. We have also succeeded in constructing the largest lensed quasar catalog from the 14 new lensed quasars and the lensed quasars which we had previously discovered. Using the largest lensed quasar catalog, we have confirmed that dark energy is the main component of our universe, as shown in other works. In addition, we conducted follow-up observations for some interesting lensed quasars.

Research Products

• [Journal Article] Analyzing the Flux Anomalies of the Large-separation Lensed Quasar SDSS J1029+2623 (2011)
  • Author(s): Kratzer, Rachael M., Richards, Gordon T., Goldberg, David M., Oguri, Masamune, Kochanek, Christopher S., Hodge, Jacqueline A., Becker, Robert H., Inada, Naohisa
  • Journal Title: The Astrophysical Journal Letters 728巻 Pages: L18
  • Peer Reviewed
• [Journal Article] The Sloan Digital Sky Survey Quasar Lens Search. IV. Statistical Lens Sample from the Fifth Data Release (2010)
  • Author(s): Inada, Naohisa, 他22名
  • Journal Title: The Astronomical Journal 140巻 Pages: 403-415
  • Peer Reviewed
• [Journal Article] SDSS J094604.90+183541.8 : A Gravitationally Lensed Quasar at z=4.8 (2010)
  • Author(s): McGreer, Ian D., Hall, Patrick B., Fan, Xiaohui, Bian, Fuyan, Inada, Naohisa, 他4名
  • Journal Title: The Astronomical Journal 140巻 Pages: 370-378
  • Peer Reviewed
• [Journal Article] Eight New Quasar Lenses from the Sloan Digital Sky Survey Quasar Lens Search (2010)
  • Author(s): Kayo, Issha, Inada, Naohisa, 他5名
  • Journal Title: The Astronomical Journal 139巻 Pages: 1614-1621
  • Peer Reviewed
• [Journal Article] 可視光広域サーベイデータを用いた重力レンズクエーサーの探索 (2009)
  • Author(s): 稲田直久
  • Journal Title: 天文月報 102巻 Pages: 747-758
• [Journal Article] Discovery of a Very Bright, Strongly Lensed z=2 Galaxy in the SDSS DR5 (2009)
  • Author(s): Lin, Huan, Buckley-Geer, Elizabeth, Allam, Sahar S., Tucker, Douglas L., Diehl, H.Thomas, Kubik, Donna, Kubo, Jeffrey M., Annis, James, Frieman, Joshua A., Oguri, Masamune, Inada, Naohisa
  • Journal Title: The Astrophysical Journal 699巻 Pages: 1242-1251
  • Peer Reviewed
• [Journal Article] Difference Imaging of Lensed Quasar Candidates in the Sloan Digital Sky Survey Supernova Survey Region (2009)
  • Author(s): Lacki, Brian C., Kochanek, Christopher S., Stanek, Krzysztof Z., Inada, Naohisa, Oguri, Masamune
  • Journal Title: The Astrophysical Journal 698巻 Pages: 428-438
  • Peer Reviewed
• [Journal Article] Five New High-Redshift Quasar Lenses from the Sloan Digital Sky Survey (2009)
  • Author(s): Inada, Naohisa, 他9名
  • Journal Title: The Astronomical Journal 137巻 Pages: 4118-4126
  • Peer Reviewed
• [Presentation] Gravitationally Lensed Quasar Survey using BOSS Quasars (2010)
  • Author(s): Inada, Naohisa
  • Organizer: SDSS-III collaboration meeting
  • Place of Presentation: Universite Paris 7(フランス、パリ)
  • Year and Date: 2010-09-17
• [Presentation] 可視光広域サーベイデータを用いた重力レンズクエーサーの探索 (2009)
  • Author(s): 稲田直久
  • Organizer: 日本天文学会2009年秋期年会
  • Place of Presentation: 山口大学(山口県山口市)
  • Year and Date: 2009-09-15