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Resolving structure of cosmic dark matter based on extremely high-resolution radio observations

Research Project

Project/Area Number 20340039
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Astronomy
Research InstitutionTohoku University

Principal Investigator

CHIBA Masashi  東北大学, 大学院・理学研究科, 教授 (50217246)

Co-Investigator(Kenkyū-buntansha) INOUE Kaiki  近畿大学, 理工学部, 准教授 (70388495)
MINEZAKI Takeo  東京大学, 大学院・理学系研究科, 助教 (60292835)
Co-Investigator(Renkei-kenkyūsha) SAITO Masao  国立天文台, ALMA推進室, 助教 (90353424)
KAMENO Seiji  鹿児島大学, 理学部, 准教授 (20270449)
SUGAI Hajime  京都大学, 大学院・理学研究科, 助教 (50291422)
SUMI Takahiro  名古屋大学, 太陽地球環境研究所, 助教 (30432214)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2010: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2009: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2008: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywords暗黒物質 / 電波観測 / 重力レンズ
Research Abstract

Hierarchical clustering models of cold dark matter (CDM)predict that a galaxy-sized dark halo with total mass being comparable to the Milky Way contains thousands of substructures (so-called CDM subhalos)having each mass of million to billion solar masses. To directly identify such substructures and set limits on standard model of dark matter, we have developed the new method based on radio observation of gravitationally lensed objects using ALMA, TMT and other large-aperture telescopes with extremely high angular resolution.

Report

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

    (32 results)

All 2011 2010 2009 2008

All Journal Article (21 results) (of which Peer Reviewed: 20 results) Presentation (11 results)

  • [Journal Article] Structure and Population of the NGC 55 Stellar Halo from A Subaru/Suprime-Cam Survey2011

    • Author(s)
      M.Tanaka, et al
    • Journal Title

      アストロフィジカルジャーナル

      Volume: 738 Pages: 150-158

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from Sloan Digital Sky Survey DR72010

    • Author(s)
      Carollo, D., Beers, T. C. Chiba, M., 他6名
    • Journal Title

      アストロフィジカルジャーナル

      Volume: 712 Pages: 692-727

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Abundances of Outer Halo Stars in the Milky Way2010

    • Author(s)
      Ishigaki, M., Chiba, M., Aoki, W.
    • Journal Title

      日本天文学会欧文誌

      Volume: 62 Pages: 143-178

    • NAID

      10026714075

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Structure and Population of the Andromeda Stellar Halo from a Subaru/Supreme-Cam Survey2010

    • Author(s)
      Tanaka, M., Chiba, M., Komiyama, Y., Guhathakurta, P., Kalirai, J. S., Iye, M.
    • Journal Title

      アストロフィジカルジャーナル

      Volume: 708 Pages: 1168-1203

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Structure and Population of the Andromeda Stellar Halo from a Subaru/Suprime-Cam Survey2010

    • Author(s)
      田中幹人・千葉柾司, 他4名
    • Journal Title

      アストロフィジカルジャーナル 708

      Pages: 1168-1203

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from SDSS DR72010

    • Author(s)
      カロッロ・ビアーズ・千葉柾司, 他6名
    • Journal Title

      アストロフィジカルジャーナル 712

      Pages: 692-727

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemical Compositions of Kinematically Selected Outer Halo Stars2009

    • Author(s)
      Zhang, L., Ishigaki, M., Aoki, W., Zhao, G., Chiba, M.
    • Journal Title

      アストロフィジカルジャーナル

      Volume: 706 Pages: 1095-1113

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] On the Size Evolution of a Galactic Disk in Hierarchical Merging of Cold Dark Matter Halos2009

    • Author(s)
      Hayashi, H., Chiba, M.
    • Journal Title

      アストロフィジカルジャーナル

      Volume: 702 Pages: 871-879

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] 6Li/7Li estimates for metal-poor stars2009

    • Author(s)
      Garcia, P. A. E., Aoki, W., Inoue, S., Ryan, S. G., Suzuki, T. K., Chiba, M
    • Journal Title

      ヨーロピアンジャーナル

      Volume: 504 Pages: 213-223

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Lens Mapping of Dark Matter Substructure with VSOP-22009

    • Author(s)
      Ohashi, S., Chiba, M., Inoue, K. T.
    • Journal Title

      In Approaching Micro-Arcsecond Resolution with VSOP-2 : ASP Conf. Ser.

      Volume: Vol.402 Pages: 290-291

    • Related Report
      2010 Final Research Report
  • [Journal Article] Subaru Mid-Infrared Imaging of the Quadruple Lenses. II. Unveiling Lens Structure of MG0414+ 0534 and Q2237+ 0302009

    • Author(s)
      Minezaki, T., Chiba, M., Kashikawa, N, Inoue, K. T., Kataza, H.
    • Journal Title

      アストロフィジカルジャーナル

      Volume: 697 Pages: 610-618

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Origin of Structural and Kinematics Properties of the Small Magellanic Cloud2009

    • Author(s)
      Bekki, K., Chiba, M.
    • Journal Title

      オーストリア天文学誌

      Volume: 26 Pages: 48-68

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Role of Galactic Gaseous Halos in Recycling Enriched Winds from Bulges to Disks : A New Bulge-Disk Chemical Connection2009

    • Author(s)
      Bekki, K., Tsujimoto, T., Chiba, M.
    • Journal Title

      アストロフィジカルジャーナルレター

      Volume: 692 Pages: 24-28

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] On the Size Evolution of a Galactic Disk in Hierarchical Merging of Cold Dark Matter Halos2009

    • Author(s)
      林寛人・千葉柾司
    • Journal Title

      アストロフィジカルジャーナル 702

      Pages: 871-879

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Subaru Mid-infrared Imaging of the Quadruple Lenses. II. Unveiling Lens Structure of MG0414+0534 and Q2237+0302009

    • Author(s)
      峰崎岳夫、千葉柾司, 他
    • Journal Title

      アストロフイジカルジャーナル (印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Origin of Structural and Kinematic Properties of the Small Magellanic Cloud2009

    • Author(s)
      戸次賢治、千葉柾司
    • Journal Title

      オーストラリア天文学会誌 26

      Pages: 48-68

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kinematics and chemical abundances of metal-poor stars in the Galactic outer halo2008

    • Author(s)
      Ishigaki, M., Chiba, M., Aoki, W.
    • Journal Title

      ドイツ天文学誌

      Volume: 329 Pages: 1073-1075

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Extended Star Formation History of the Andromeda Spheroid at 35 kick on the Minor Axis2008

    • Author(s)
      Brown, T. M., Beaton, R., Chiba, M. 他14名
    • Journal Title

      アストロフィジカルジャーナルレター

      Volume: 685 Pages: 121-124

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Formation of the Small Magellanic Cloud : An Ancient Major Merger as a Solution to the Kinematical Differences between Old Stars and H I Gas2008

    • Author(s)
      Bekki, K., Chiba, M.
    • Journal Title

      アストロフィジカルジャーナルレター

      Volume: 679 Pages: 89-92

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Magellan impact : Collision between the Outer Galactic H I Disk and the Leading Arms of the Magellan Stream2008

    • Author(s)
      Bekki, K., Chiba, M., McClure-Griffiths, N. M.
    • Journal Title

      アストロフィジカルジャーナルレター

      Volume: 672 Pages: 17-22

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Extended Star Formation History of the Andromeda Spheroid at 35 kpc on the Minor Axis2008

    • Author(s)
      トーマスブラウン, 他16名(千葉柾司3番目)
    • Journal Title

      アストロフィジカルジャーナルレター 685

      Pages: 121-124

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] 矯小銀河の動力学解析に基づくダークハローの非球対称性2011

    • Author(s)
      林航平、千葉柾司
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      鹿児島大学
    • Year and Date
      2011-09-20
    • Related Report
      2010 Annual Research Report
  • [Presentation] すばる主焦点カメラで探るNGC55恒星ハローの構造と種族2010

    • Author(s)
      田中幹人, 他
    • Organizer
      日本天文学会2010年秋季年会
    • Place of Presentation
      金沢大学
    • Year and Date
      2010-09-24
    • Related Report
      2010 Final Research Report
  • [Presentation] The science drivers for a mid-infrared instrument for the TMT2010

    • Author(s)
      岡本美子, 他
    • Organizer
      SPIE
    • Place of Presentation
      アメリカ
    • Year and Date
      2010-06-30
    • Related Report
      2010 Final Research Report
  • [Presentation] 広視野撮像・分光サーベイに基づく銀河考古学の展開2009

    • Author(s)
      千葉柾司
    • Organizer
      日本天文学会2009年秋季年会
    • Place of Presentation
      山口大学
    • Year and Date
      2009-09-16
    • Related Report
      2010 Final Research Report
  • [Presentation] 広視野撮像・分光サーベイに基づく銀河考古学の展開2009

    • Author(s)
      千葉柾司
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      山口大学(山口)
    • Year and Date
      2009-09-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from SDSS DR72009

    • Author(s)
      Daniela Carollo, 他
    • Organizer
      IAU265
    • Place of Presentation
      ブラジル
    • Year and Date
      2009-08-12
    • Related Report
      2010 Final Research Report
  • [Presentation] すばる主焦点カメラで探るアンドロメダ恒星ハローの構造と種族2009

    • Author(s)
      田中幹人, 他
    • Organizer
      日本天文学会2009年春季年会
    • Place of Presentation
      大阪府立大学
    • Year and Date
      2009-03-27
    • Related Report
      2010 Final Research Report
  • [Presentation] 銀河系外部ハローに属する金属欠乏星の軌道運動と化学組成2008

    • Author(s)
      石垣美歩, 他
    • Organizer
      日本天文学会2008年秋季年会
    • Place of Presentation
      岡山理科大学
    • Year and Date
      2008-09-12
    • Related Report
      2010 Final Research Report
  • [Presentation] 銀河系外部ハローに属する金属欠乏星の軌道運動と化学組成2008

    • Author(s)
      石垣美歩、千葉柾司、青木和光
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      岡山理科大学
    • Year and Date
      2008-09-12
    • Related Report
      2008 Annual Research Report
  • [Presentation] 銀河円盤の形成における暗黒物質サブハローの影響2008

    • Author(s)
      林寛人, 他
    • Organizer
      日本天文学会2008年春季年会
    • Place of Presentation
      国立オリンピック記念青少年総合センター
    • Year and Date
      2008-03-26
    • Related Report
      2010 Final Research Report
  • [Presentation] 重力レンズで探る暗黒物質サブハロー2008

    • Author(s)
      大橋盛徳, 他
    • Organizer
      日本天文学会2008年春季年会
    • Place of Presentation
      国立オリンピック記念青少年総合センター
    • Year and Date
      2008-03-26
    • Related Report
      2010 Final Research Report

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

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