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Development of Polarization Sky Simulator toward Discovering the Intergalactic Medium

Research Project

Project/Area Number 15K17614
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Astronomy
Research InstitutionNational Astronomical Observatory of Japan (2017)
Kagoshima University (2015-2016)

Principal Investigator

Akahori Takuya  国立天文台, 水沢VLBI観測所, 特任研究員 (70455913)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords電波天文学 / 磁場 / 偏波 / 宇宙大規模構造 / SKA計画
Outline of Final Research Achievements

This research revealed polarization properties of various astronomical objects toward the Square Kilometre Array (SKA), and developed Faraday tomography which is thought to be a key technology for future radio polarimetry. We achieved formulation of depolarization in galaxies, and revealed that Fast Radio Bursts (FRBs) can be ideal extragalactic polarized sources for the study of the intergalactic magnetic field. We observed galaxy clusters and a local nebula. We applied Faraday tomography to the data, and achieved to distinguish some components along the lines-of-sight. We clarified how to apply Faraday tomography to the study of external galaxies, and showed the capability of sparse-modeling-based Faraday tomography for the study of the intergalactic magnetic field.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (43 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (10 results) Journal Article (15 results) (of which Int'l Joint Research: 14 results,  Peer Reviewed: 15 results,  Open Access: 8 results,  Acknowledgement Compliant: 4 results) Presentation (18 results) (of which Int'l Joint Research: 6 results,  Invited: 10 results)

  • [Int'l Joint Research] SRON/Radboud University Nijmegen(オランダ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] UNIST(韓国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Toronto(Canada)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Radboud University Nijmegen(オランダ)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] UNIST(韓国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Toronto(Canada)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Sydney(Australia)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] University of Cape Town(南アフリカ)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Radboud University Nijmegen/ASTRON(オランダ)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2015 Research-status Report
  • [Journal Article] Magnetic field analysis of the bow and terminal shock of the SS 433 jet2018

    • Author(s)
      Sakemi H., Machida M., Akahori T., Nakanishi H., Akamatsu H., Kurahara K., Farnes J.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: 2 Pages: 1-14

    • DOI

      10.1093/pasj/psy003

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cosmic magnetism in centimeter- and meter-wavelength radio astronomy2017

    • Author(s)
      Akahori Takuya、Nakanishi Hiroyuki、Sofue Yoshiaki、Fujita Yutaka、Ichiki Kiyotomo、Ideguchi Shinsuke、Kameya Osamu、Kudoh Takahiro、Kudoh Yuki、Machida Mami、Miyashita Yoshimitsu、Ohno Hiroshi、Ozawa Takeaki、Takahashi Keitaro、Takizawa Motokazu、Yamazaki Dai G
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 70 Issue: 1 Pages: 1-44

    • DOI

      10.1093/pasj/psx123

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Study of the Vertical Magnetic Field in Face-on Galaxies Using Faraday Tomography2017

    • Author(s)
      Ideguchi Shinsuke、Tashiro Yuichi、Akahori Takuya、Takahashi Keitaro、Ryu Dongsu
    • Journal Title

      The Astrophysical Journal

      Volume: 843 Issue: 2 Pages: 146-146

    • DOI

      10.3847/1538-4357/aa79a1

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Properties of the cosmological filament between two clusters: A possible detection of a large-scale accretion shock by Suzaku2017

    • Author(s)
      Akamatsu H.、Fujita Y.、Akahori T.、Ishisaki Y.、Hayashida K.、Hoshino A.、Mernier F.、Yoshikawa K.、Sato K.、Kaastra J. S.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 606 Pages: 1-8

    • DOI

      10.1051/0004-6361/201730497

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Probing WHIM around Galaxy Clusters with Fast Radio Bursts and the Sunyaev-Zel'dovich effect2017

    • Author(s)
      Y. Fujita, T, Akahori, K. Umetsu, C. L. Sarazin, & K.-W. Wong
    • Journal Title

      The Astrophysical Journal

      Volume: 834 Issue: 1 Pages: 13-13

    • DOI

      10.3847/1538-4357/834/1/13

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Interacting Large-Scale Magnetic Fields and Ionised Gas in the W50/SS433 System2017

    • Author(s)
      J. Farnes, B. M. Gaensler, C. Purcell, X. H. Sun, M. Haverkorn, E. Lenc, S. P. O’Sullivan, T. Akahori
    • Journal Title

      Monthly Notice of the Royal Astronomical Society

      Volume: 467 Issue: 4 Pages: 4777-4801

    • DOI

      10.1093/mnras/stx338

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Fast Radio Bursts as Probes of Magnetic Fields in Filaments of Galaxies2016

    • Author(s)
      T. Akahori, D. Ryu, B. M. Gaensler
    • Journal Title

      The Astrophysical Journal

      Volume: 824 Issue: 2 Pages: 123-132

    • DOI

      10.3847/0004-637x/824/2/105

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Sunyaev-Zel'dovich effect at 5″: RX J1347.5-1145 imaged by ALMA2016

    • Author(s)
      T. Kitayama, S. Ueda, S. Takakuwa, T. Tsutsumi, E. Komatsu, T. Akahori, D. Iono, T. Izumi, R. Kawabe, K. Kohno, H. Matsuo, N. Ota, Y. Suto, M. Takizawa, K. Yoshikawa
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 68 Issue: 5 Pages: 88-106

    • DOI

      10.1093/pasj/psw082

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Discovery of a nearby early-phase major cluster merger CIZA J1358.9-47502015

    • Author(s)
      Y. Kato, K. Nakazawa, L. Gu, T. Akahori, M. Takizawa, Y. Fujita & K. Makishima
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Issue: 4 Pages: 71-71

    • DOI

      10.1093/pasj/psv029

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] JVLA S- and X-band polarimetry of the merging cluster Abell 22562015

    • Author(s)
      Takeaki Ozawa, Hiroyuki Nakanishi, Takuya Akahori, Kenta Anraku, Motokazu Takizawa, Ikumi Takahashi, Sachiko Onodera, Yuya Tsuda, Yoshiaki Sofue
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Issue: 6 Pages: 110-110

    • DOI

      10.1093/pasj/psv082

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Using the Rotation Measure Grid to Reveal the Mysteries of the Magnetized Universe2015

    • Author(s)
      M. Johnston-Hollitt, F. Govoni, R. Beck, S. Dehghan, L. Pratley, T. Akahori, G. Heald, I. Agudo, A. Bonafede, E. Carretti, T. Clarke, S. Colafrancesco, T.A. Ensslin, L. Feretti, B. Gaensler, M. Haverkorn, S.A. Mao, N. Oppermann, L. Rudnick, A. Scaife, D. Schnitzeler, J. Stil, A. R. Taylor, and V. Vacca
    • Journal Title

      Advancing Astrophysics with the Square Kilometre Array

      Volume: 92 Pages: 1-18

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] SKA Deep Field and Cosmic Magnetism2015

    • Author(s)
      A. R. Taylor, I. Agudo, T. Akahori, R. Beck, B. M. Gaensler, G. H. Heald, M. Johnston-Hollitt, M. Langer, L. Rudnick, D. Ryu, A. Scaife, D. Schleicher, J. M. Stil
    • Journal Title

      Advancing Astrophysics with the Square Kilometre Array

      Volume: 113 Pages: 1-9

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measuring Magnetism in the Milky Way with the Square Kilometre Array2015

    • Author(s)
      M. Haverkorn, T. Akahori, E. Carretti, K. Ferriere, P. Frick, B. Gaensler, G. Heald, M. Johnston-Hollitt, D. Jones, T. Landecker, S. A. Mao, A. Noutsos, N. Oppermann, W. Reich, T. Robishaw, A. Scaife, D. Schnitzeler, R. Stepanov, X. Sun, R. Taylor
    • Journal Title

      Advancing Astrophysics with the Square Kilometre Array

      Volume: 96 Pages: 1-19

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Broadband Polarimetry with the Square Kilometre Array: A Unique Astrophysical Probe2015

    • Author(s)
      B. M. Gaensler, I. Agudo, T. Akahori, J. Banfield, R. Beck, E. Carretti, J. Farnes, M. Haverkorn, G. Heald, D. Jones, T. Landecker, S. A. Mao, R. Norris, S. O'Sullivan, L. Rudnick, D. Schnitzeler, N. Seymour, X. Sun
    • Journal Title

      Advancing Astrophysics with the Square Kilometre Array

      Volume: 103 Pages: 1-13

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Unravelling the Origin of Large-Scale Magnetic Fields in Galaxy Clusters2015

    • Author(s)
      A. Bonafede, F. Vazza, M. Brüggen, T. Akahori, E. Carretti, S. Colafrancesco, L. Feretti, C. Ferrari, G. Giovannini, F. Govoni, M. Johnston-Hollitt, M. Murgia, L. Rudnick, A. Scaife, V. Vacca
    • Journal Title

      Advancing Astrophysics with the Square Kilometre Array

      Volume: 95 Pages: 1-9

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] SKAによる突発天体2018

    • Author(s)
      赤堀卓也
    • Organizer
      SKAJPパルサー・突発天体研究会
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高速電波バーストのUHF全帯域観測で探る宇宙磁場2017

    • Author(s)
      赤堀卓也
    • Organizer
      重力波&電磁波サーベイ&突発天体研究会
    • Place of Presentation
      山口大学(山口県・山口市)
    • Year and Date
      2017-03-23
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] 衝突銀河団CIZA J1358.9-4750領域の広がった電波放射の探査2017

    • Author(s)
      赤堀卓也, 加藤佑一, 中澤知洋, 小澤武揚, Gu Lyli, 滝沢元和, 藤田裕, 中西裕之, 岡部信広, 牧島一夫
    • Organizer
      日本天文学会2017春季年会
    • Place of Presentation
      九州大学(福岡県・福岡市)
    • Year and Date
      2017-03-15
    • Related Report
      2016 Research-status Report
  • [Presentation] UHF全帯域で探る宇宙磁場・パルサー・突発現象・星間物質2017

    • Author(s)
      赤堀卓也
    • Organizer
      宇宙電波懇談会シンポジウム
    • Place of Presentation
      国立天文台(東京都・三鷹市)
    • Year and Date
      2017-02-22
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Exploring the Diffuse Ionized Gas in Our Galaxy by means of Long Wavelength Radio Observation2016

    • Author(s)
      赤堀卓也
    • Organizer
      第六回DTAシンポジウム
    • Place of Presentation
      国立天文台(東京都・三鷹市)
    • Year and Date
      2016-11-24
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] The Cosmic Web: A new discovery space in the SKA generation2016

    • Author(s)
      T. Akahori
    • Organizer
      SKA 2016: Science for the SKA generation
    • Place of Presentation
      Goa (India)
    • Year and Date
      2016-11-07
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 宇宙磁場・星間現象・パルサー・突発天体が集合する意義~汎用大型観測装置SKAのUHF帯コメンサルサーベイ~2016

    • Author(s)
      赤堀卓也
    • Organizer
      日本SKA合同サイエンス会議「銀河系内現象から大規模構造へ」
    • Place of Presentation
      ルーセントタカミヤ(山形県・山形市)
    • Year and Date
      2016-10-27
    • Related Report
      2016 Research-status Report
  • [Presentation] Recent SKA-Related Activities in Japan2016

    • Author(s)
      T. Akahori
    • Organizer
      Asia-Pacific Radio Science Conference
    • Place of Presentation
      Seoul (Korea)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Probing the IGM2016

    • Author(s)
      T. Akahori
    • Organizer
      Boutique & Experiments 2016: Radio
    • Place of Presentation
      Pasadena (USA)
    • Year and Date
      2016-07-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] The SKA Project2016

    • Author(s)
      T. Akahori
    • Organizer
      Australia-Japan Joint Workshop on Low Frequency Astrometry
    • Place of Presentation
      鹿児島大学(鹿児島県鹿児島市)
    • Year and Date
      2016-03-28
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] SKAで探る宇宙2016

    • Author(s)
      赤堀卓也
    • Organizer
      高エネルギー宇宙物理学懇談会シンポジウム
    • Place of Presentation
      東京理科大学(東京都新宿区)
    • Year and Date
      2016-03-23
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] SKA時代のFRBを用いた銀河間物質の探査2016

    • Author(s)
      赤堀卓也, D. Ryu, B. M. Gaensler
    • Organizer
      日本天文学会
    • Place of Presentation
      首都大学東京(東京都八王子市)
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
  • [Presentation] センチ波偏波観測のサイエンスと将来計画2016

    • Author(s)
      赤堀卓也
    • Organizer
      宇宙電波懇談会シンポジウム
    • Place of Presentation
      国立天文台(東京都三鷹市)
    • Year and Date
      2016-03-09
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] センチ波偏波観測のサイエンスと将来計画2016

    • Author(s)
      赤堀卓也
    • Organizer
      偏波・偏光研究会
    • Place of Presentation
      茨城大学(茨城県水戸市)
    • Year and Date
      2016-01-28
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] MWAによる宇宙磁場研究2016

    • Author(s)
      赤堀卓也
    • Organizer
      MWA-Japanキックオフミーティング
    • Place of Presentation
      名古屋大学(愛知県・名古屋市)
    • Related Report
      2016 Research-status Report
  • [Presentation] FRBで探る銀河間物質2015

    • Author(s)
      赤堀卓也
    • Organizer
      日本SKAサイエンス会議「宇宙磁場」2015(第4回)
    • Place of Presentation
      鹿児島大学(鹿児島県鹿児島市)
    • Year and Date
      2015-09-17
    • Related Report
      2015 Research-status Report
  • [Presentation] SKAで探るミッシングバリオンと銀河間磁場2015

    • Author(s)
      赤堀卓也
    • Organizer
      日本天文学会
    • Place of Presentation
      甲南大学(兵庫県神戸市)
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
  • [Presentation] Proving RM due to the IGMF with SKA2015

    • Author(s)
      T. Akahori
    • Organizer
      Origin, Evolution, and Signature of Cosmological Magnetic Fields
    • Place of Presentation
      Stockholm (Sweden)
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2022-02-22  

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