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Search for B-modes in CMB polarization with Multi-Frequency Observation

Research Project

Project/Area Number 20740158
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

TAJIMA Osamu  High Energy Accelerator Research Organization, 素粒子原子核研究所, 准教授 (80391704)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsインフレーション宇宙 / 原始重力波 / 宇宙背景放射 / 偏光 / 宇宙物理 / 素粒子実験
Research Abstract

B-modes, faint polarization pattern in Cosmic Microwave Background (CMB) is smoking gun signature of inflationary universe. We searched B-modes with QUIET experiment which is ground-based CMB polarization telescope. Based on 40GHz band data, we obtained the second best upper limits for B-modes. We also have evidence for foreground (Galaxy emission) contamination in one of our four observation fields. Understanding of the foreground contamination is the important in future. Since we already have 90GHz band observation data in addition to the 40GHz band data, we have prospects to obtain the world best B-modes limits with combined results for both bands.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (15 results)

All 2011 2010 2009 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (8 results) Remarks (6 results)

  • [Journal Article] Calibration System with Cryogenically-Cooled Loads for CMB Polarization Detectors2011

    • Author(s)
      MASAYA HASEGAWA, OSAMU TAJIMA, YUJI CHINONE, MASASHI HAZUMI, KOJI ISHIDOSHIRO, MAKOTO NAGAI
    • Journal Title

      Rev.Sci.Instrum. 82

      Pages: 54501-54501

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Presentation] 将来のCMB偏光実験においてBモード発見を確実にするための偏光角較正装置の開発2011

    • Author(s)
      田島治
    • Organizer
      日本物理学会
    • Place of Presentation
      新潟大学
    • Year and Date
      2011-03-26
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] Search for B-modes in CMB Polarization-QUIET and other experiment2011

    • Author(s)
      田島治
    • Organizer
      Rencontres de Moriond EW Interactions and Unified Theories
    • Place of Presentation
      イタリア・ラトューユ(招待講演)
    • Year and Date
      2011-03-19
    • Related Report
      2010 Final Research Report
  • [Presentation] Search for B-modes in CMB Polarization-QUIET and other experiments2011

    • Author(s)
      田島治
    • Organizer
      Rencontres de Moriond EW Interactions and Unified Theories
    • Place of Presentation
      イタリア・ラトゥーユ
    • Year and Date
      2011-03-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] QUIET Experiment-Ground-based Probe for Inflationary Universe2010

    • Author(s)
      田島治
    • Organizer
      Time and Matter
    • Place of Presentation
      モンテネグロ・ブドヴァ
    • Year and Date
      2010-10-05
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] QUIET観測ストラテジーと装置較正の達成度2010

    • Author(s)
      田島治
    • Organizer
      日本物理学会
    • Place of Presentation
      九州工業大学
    • Year and Date
      2010-09-13
    • Related Report
      2010 Final Research Report
  • [Presentation] QUIET実験観測ストラテジーと装置較正の達成度2010

    • Author(s)
      田島治
    • Organizer
      日本物理学会
    • Place of Presentation
      九州工業大学
    • Year and Date
      2010-09-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] QUIET実験概要と2008年度現状報告2009

    • Author(s)
      田島治
    • Organizer
      日本物理学会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-27
    • Related Report
      2010 Final Research Report
  • [Presentation] QUIET実験 概要と2008年度現状報告2009

    • Author(s)
      田島 治
    • Organizer
      日本物理学会
    • Place of Presentation
      立教大学(東京)
    • Year and Date
      2009-03-27
    • Related Report
      2008 Annual Research Report
  • [Remarks] ホームページ等

    • URL

      http://quiet.kek.jp/public/News/FirstResult/quiet_1st_results.html

    • Related Report
      2010 Final Research Report
  • [Remarks]

    • URL

      http://quiet.kek.jp/public/News/FirstResult/quiet_1st_results.html

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://quiet.uchicago.edu/

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://quiet.kek.jp/

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://quiet.uchicago.edu/

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://quiet.kek.jp/

    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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