• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2014 Fiscal Year Annual Research Report

実験と観測で解き明かす中性子星の核物質

Administrative Group

Project AreaNuclear matter in neutron stars investigated by experiments and astronomical observations
Project/Area Number 24105001
Research InstitutionTohoku University

Principal Investigator

田村 裕和  東北大学, 理学研究科, 教授 (10192642)

Co-Investigator(Kenkyū-buntansha) 高橋 俊行  大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 准教授 (50281960)
村上 哲也  京都大学, 理学研究科, 講師 (50219896)
中村 隆司  東京工業大学, 理工学研究科, 教授 (50272456)
堀越 宗一  東京大学, 工学系研究科, 助教 (00581787)
高橋 忠幸  独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (50183851)
大西 明  京都大学, 基礎物理学研究所, 教授 (70250412)
玉川 徹  独立行政法人理化学研究所, 仁科加速器研究センター, 准主任研究員 (20333312)
Project Period (FY) 2012-06-28 – 2017-03-31
Keywords原子核物理 / 中性子星 / X線天文学 / 冷却原子 / 核物質 / ストレンジネス / 中性子過剰核 / 重イオン衝突実験
Outline of Annual Research Achievements

●総括班定例打ち合わせを約2か月ごとに実施し、各計画研究の進捗状況のチェック、研究会やスクール等の企画・準備を行った。
●2014年9月23日~25日に熱川温泉で領域全体の研究会を行った。68名が参加、計画研究と公募研究の成果発表や関連する話題の講演を行った。●ウィンタースクール「中性子星の核物質」を2014年2月25~27日に阪大RCNPで開催した。関西の大学院生や若手研究者を中心に約55名が参加した。参加者は基礎的な講義を受けるとともに、RCNPの施設を見学した。
●10月7日~11日に、ハワイ島で行われた日米合同原子核物理学会において、総括班が組織者となってミニシンポジウム"Nuclear Matter in Neutron Stars"を2日にわたって開催した。2件の招待講演と33件の応募講演が行われ、活発に議論がなされた。本新学術の米国研究者への周知と情報交換が大きく進み大変有意義であった。●5月12日~13日にB03班と総括班の共催で国際研究会Intersection of cold-atomic and nuclear physicsを韓国Pohanで開催。アジアで初めての冷却原子と原子核物理の合同研究会となった。●5月31日~6月1日に理研と共催で国際研究会"Nuclear Physics with strangeness at J-PARC"を理研で開催した。●H27年3月12日~14日に京大基研で理論班と総括班の共催で中性子星核物質研究会を開催した。
●アウトリーチ活動として、一般向け単行本「宇宙の物質はどのようにできたのか」(日本評論社)の第9章「中性子星の奇妙な物質」を領域代表・田村が執筆した(田村はこの単行本の編集も行った)。●市民講演会「中性子星を支える力」 (市民講座「物理と宇宙」第2回)2014年11月29日、京都大学を分担者・大西が行った。

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

年に一度の全体研究会では、多少不便な場所だったにもかかわらず全国から予想を大幅に超える参加者があり、セミナー用宿泊施設で寝食を共にしながらリラックスした雰囲気で朝から深夜まで活発な議論が行われた。同じく3回目となる恒例の若手スクールは、初めて関西地区で行ったが、ほとんどの学生や若手が初めての参加者であり、本新学術への参加意欲が全国で高まっていることがわかった。
また、ハワイの日米合同原子核物理学会でのシンポジウムは、予想を大きく超える多数の応募講演があり、米国側への本領域の宣伝の格好の機会となった。韓国で行った国際シンポジウムや、外国人を招いて行った国際研究会などの開催もあわせて、本新学術領域の国際的な宣伝が進むとともに、海外での関連分野の最近の発展を取り入れて、本新学術研究に生かすことができるようになってきた。 一般向け記事の執筆や市民講演会などのアウトリーチ活動も積極的に行った。
以上から、総括班の活動は極めて活発で予想以上の効果があったといえる。

Strategy for Future Research Activity

本新学術領域の期間が残り2年となったため、それぞれの計画研究や公募研究の成果をどのようにまとめていくかを総括班会議等で話し合い、今後の連携した研究の進め方を検討することとしたい。また、他の新学術領域との合同研究会を開催して、本領域の研究を今後さらに拡大・発展させることを意識して進めたい。
総括班主催の企画としては、これまで同様、大規模な全体研究会と若手スクールを毎年行う。また、新しい公募研究がスタートするため、新しい公募研究の紹介と前回の公募研究の成果発表のための研究会を行う。
国内外の関連テーマの国際会議やシンポジウムを積極的に共催・協賛して本領域について一層の周知を図るとともに、外国人研究者を本領域の各計画研究・公募研究や関連する研究に共同研究者として引き込んで、新しい研究の展開をはかりたい。
H25年度に行った検出器交流会を発展させ、共同開発・共同利用を目指したワークショップを開催する。また、各地で小規模のセミナーを頻繁に開催することを心がけたい。
各計画研究や公募研究の報告や成果をHPにこまめに掲載することは、人手の問題もあって意外と難しいことが分かった。総括班メンバーが互いに声を掛け合うとともに、事務補助者やアルバイトを使って情報の集約と発信に努力したい。

  • Research Products

    (50 results)

All 2015 2014 Other

All Journal Article (29 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 27 results,  Open Access: 14 results,  Acknowledgement Compliant: 6 results) Presentation (19 results) (of which Invited: 17 results) Book (1 results) Remarks (1 results)

  • [Journal Article] The first evidence of a deeply bound state of Ξ-14N system2015

    • Author(s)
      K. Nakazawa, T. Takahashi et al.
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2015 Pages: 033D02

    • DOI

      10.1093/ptep/ptv008

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Observation of the ”K-pp”-like structure in the d(π+,K+) reaction at 1.69 GeV/c2015

    • Author(s)
      Yudai Ichikawa, Takeshi Koike, Koji Miwa, Toshiyuki Takahashi, Hirokazu Tamura et al.
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2015 Pages: 021D01-1-8

    • DOI

      10.1093/ptep/ptv002

    • Peer Reviewed / Open Access
  • [Journal Article] The growth of the galaxy cluster Abell 85: mergers, shocks, stripping and seeding of clumping2015

    • Author(s)
      Y. Ichinohe, N. Werner, A. Simionescu, S.W. Allen, R.E.A. Canning, S. Ehlert, F. Mernier, T. Takahashi
    • Journal Title

      Monthly Notices of Royal Academy of Science

      Volume: 448 Pages: 2971-2986

    • DOI

      10.1093/mnras/stv217

    • Peer Reviewed / Open Access
  • [Journal Article] The origin of ultrafast outflows in AGN: Monte Carlo simulations of the wind in PDS 4562015

    • Author(s)
      Kouichi Hagino, Hirokazu Odaka, Chris Done, Poshak Gandhi, Shin Watanabe, Masao Sako, Tadayuki Takahashi
    • Journal Title

      Monthly Notices of Royal Academy of Science

      Volume: 446 Pages: 663-676

    • DOI

      10.1093/mnras/stu2095

    • Peer Reviewed / Open Access
  • [Journal Article] EOSDB: The Database for Nuclear EoS2015

    • Author(s)
      Chikako Ishizuka, Takuma Suda, Hideyuki Suzuki, Akira Ohnishi, Kohsuke Sumiyoshi, Hiroshi Toki
    • Journal Title

      Publ. Astron. Soc. Japan

      Volume: 67 Pages: 13 -1-17

    • DOI

      10.1093/pasj/psu141

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Lambda-Lambda interaction from relativistic heavy-ion collisions2015

    • Author(s)
      Kenji Morita, Takenori Furumoto, Akira Ohnishi
    • Journal Title

      Phys. Rev. C

      Volume: 91 Pages: 024916-1-16

    • DOI

      10.1103/PhysRevC.91.024916

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Repeated short-term spectral softening in the low/hard state of the Galactic black hole candidate Swift J1753.5-01272015

    • Author(s)
      Akifumi Yoshikawa, Shin'ya Yamada, Satoshi Nakahira, Masaru Matsuoka, Hitoshi Negoro, Tatehiro Mihara, Toru Tamagawa
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Pages: 11-1-11

    • DOI

      10.1093/pasj/psu140

    • Peer Reviewed / Open Access
  • [Journal Article] Development of a low-temperature germanium detector via mechanical cooling with a compact pulsetube refrigerator2014

    • Author(s)
      T. Koike, H. Tamura et al.
    • Journal Title

      Nuclear Instrument and Method

      Volume: A770 Pages: 1-7

    • DOI

      10.1016/j.nima.2014.09.084

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Study on 6ΛH hypernucleus by the (π-,K+) reaction at J-PARC2014

    • Author(s)
      H. Sugimura, T. Takahashi, H. Tamura et al. (J-PARC10 collaboration)
    • Journal Title

      EPJ Web Conference

      Volume: 66 Pages: 09017-1-4

    • DOI

      10.1051/epjconf/20146609017

    • Open Access
  • [Journal Article] Search for 6ΛH hypernucleus by the (π-,K+) reaction at J-PARC2014

    • Author(s)
      H. Sugimura, T. Takahashi, H. Tamura et al. (J-PARC10 collaboration)
    • Journal Title

      J. Phys. Conf. Ser.

      Volume: 569 Pages: 12078

    • DOI

      10.1088/1742-6596/569/1/012078

    • Open Access
  • [Journal Article] Inclusive spectrum of the d(π+, K+) reaction at 1.69 GeV/c2014

    • Author(s)
      Yudai Ichikawa, Takeshi Koike, Koji Miwa, Toshiyuki Takahashi, Hirokazu Tamura et al.
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2014 Pages: 101D03-1-8

    • DOI

      10.1093/ptep/ptu128

    • Peer Reviewed / Open Access
  • [Journal Article] High-resolution search for the Θ+ pentaquark via a pion-induced reaction at J-PARC2014

    • Author(s)
      M. Moritsu, T. Koike, K. Miwa, T. Takahashi, H. Tamura et al.
    • Journal Title

      Physical Review C

      Volume: 90 Pages: 035205-1-11

    • DOI

      10.1103/PhysRevC.90.035205

    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Excitation of Giant Monopole Resonance in 208Pb and 116Sn Using Inelastic Deuteron Scattering2014

    • Author(s)
      D. Pate, T. Murakami et al.
    • Journal Title

      Phys. Lett. B

      Volume: 735 Pages: 387-390

    • DOI

      10.1016/j.physletb.2014.06.073

    • Peer Reviewed
  • [Journal Article] Centrality categorization for R_{p(d)+A} in high-energy collisions2014

    • Author(s)
      PHENIX Collaboration (A. Adare, T. Murakami et al.)
    • Journal Title

      Phys. Rev. C

      Volume: 90 Pages: 34902-1-18

    • DOI

      10.1103/PhysRevC.90.034902.

    • Peer Reviewed
  • [Journal Article] Deformation-Driven p-Wave Halos at the Drip Line: 31Ne2014

    • Author(s)
      T. Nakamura et al.
    • Journal Title

      Physical Review Letters

      Volume: 112 Pages: 142501-1-5

    • DOI

      10.1103/PhysRevLett.112.142501

    • Peer Reviewed
  • [Journal Article] Observation of a p-wave One-neutron Halo Configuration in 37Mg2014

    • Author(s)
      N. Kobayashi, T. Nakamura et al.
    • Journal Title

      Physical Review Letters

      Volume: 112 Pages: 242501-1-5

    • DOI

      10.1103/PhysRevLett.112.242501

    • Peer Reviewed
  • [Journal Article] Quadrupole Collectivity in island-of-inversion nuclei 28,30Ne and 36,38Mg2014

    • Author(s)
      S. Michimasa,T. Nakamura et al.
    • Journal Title

      Physical Review C

      Volume: 89 Pages: 054307-1-9

    • DOI

      10.1103/PhysRevC.89.054307

    • Peer Reviewed
  • [Journal Article] Neutron Occupancy of the 0d5/2 orbital and the N=16 shell closure in 24O2014

    • Author(s)
      K. Tshoo, T. Nakamura et al.
    • Journal Title

      Physics Letters B

      Volume: 739 Pages: 19-22

    • DOI

      10.1016/j.physletb.2014.10.033

    • Peer Reviewed
  • [Journal Article] Shell and shape evolution at N=28: The 40Mg ground state2014

    • Author(s)
      H.L. Crawford, T. Nakamura et al.
    • Journal Title

      Physical Review C

      Volume: 89 Pages: 041303-1-5

    • DOI

      10.1103/PhysRevC.89.041303

    • Peer Reviewed
  • [Journal Article] Multifrequency Studies of the Peculiar Quasar 4C +21.35 during the 2010 Flaring Activity2014

    • Author(s)
      M. Ackermann, T. Takahashi et al.
    • Journal Title

      Astrophysical Journal

      Volume: 786 Pages: 157

    • DOI

      10.1088/0004-637X/786/2/157

    • Peer Reviewed
  • [Journal Article] Discovery of recombining plasma in the supernova remnant 3C 3912014

    • Author(s)
      Tamotsu Sato, Katsuji Koyama, Tadayuki Takahashi, Hirokazu Odaka, Shinya Nakashima
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 66 Pages: 1249-1257

    • DOI

      10.1093/pasj/psu120

    • Peer Reviewed / Open Access
  • [Journal Article] The Si/CdTe semiconductor Compton camera of the ASTRO-H Soft Gamma-ray Detector (SGD)2014

    • Author(s)
      S. Watanabe, T. Takahashi et al.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research A

      Volume: 765 Pages: 192-201

    • DOI

      10.1016/j.nima.2014.05.127

    • Peer Reviewed
  • [Journal Article] Bin mode estimation methods for Compton camera imaging2014

    • Author(s)
      S. Ikeda, H. Odaka, M. Uemura, T. Takahashi, S. Watanabe, S. Takeda
    • Journal Title

      Nuclear Instruments and Methods in Physics Research A

      Volume: 760 Pages: 46-56

    • DOI

      10.1016/j.nima.2014.05.081

    • Peer Reviewed
  • [Journal Article] Mass and radius formulas for low-mass neutron stars2014

    • Author(s)
      Hajime Sotani, Kei Iida, Kazuhiro Oyamatsu, Akira Ohnishi
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2014 Pages: 051E01-1-8

    • DOI

      10.1093/ptep/ptu052

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Auxiliary field Monte-Carlo simulation of strong coupling lattice QCD for QCD phase diagram2014

    • Author(s)
      Terukazu Ichihara, Akira Ohnishi, Takashi Z. Nakano
    • Journal Title

      Prog. Theor. Exp. Phys.

      Volume: 2014 Pages: 123D02-1-23

    • DOI

      10.1093/ptep/ptu154

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Spectral and Timing Nature of the Symbiotic X-ray Binary 4U 1954+319: The Slowest Rotating Neutron Star in an X-ray Binary System2014

    • Author(s)
      Teruaki Enoto, Makoto Sasano, Shin'ya Yamada, Toru Tamagawa, Kazuo Makishima, Katja Pottschmidt, Diana Marcu, Robin H. D. Corbet, Felix Fuerst, Jörn Wilms
    • Journal Title

      Astrophysical Journal

      Volume: 786 Pages: 127-1-16

    • DOI

      10.1088/0004-637X/786/2/127

    • Peer Reviewed / Open Access
  • [Journal Article] Development of a Diehard GEM using PTFE insulator substrate2014

    • Author(s)
      M. Wakabayashi, K. Komiya, T. Tamagawa, Y. Takeuchi, K. Aoki, A. Taketani, H. Hamagaki
    • Journal Title

      Journal of Instrumentation

      Volume: 9 Pages: C03043-1-10

    • DOI

      10.1088/1748-0221/9/03/C03043

    • Peer Reviewed / Open Access
  • [Journal Article] Abundance Patterns in the Interstellar Medium of Early-type Galaxies Observed with Suzaku2014

    • Author(s)
      Saori Konami, Kyoko Matsushita, Ryo Nagino, Toru Tamagawa
    • Journal Title

      Astrophysical Journal

      Volume: 783 Pages: 8-1-25

    • DOI

      10.1088/0004-637X/783/1/8

    • Peer Reviewed
  • [Journal Article] Property of LCP-GEM in Pure Dimethyl Ether at Low Pressure2014

    • Author(s)
      Y. Takeuchi, T. Tamagawa et al.
    • Journal Title

      Journal of Instrumentation

      Volume: 9 Pages: C01002

    • DOI

      10.1088/1748-0221/9/01/C01002

    • Peer Reviewed / Open Access
  • [Presentation] Introduction : Aim of the workshop2015

    • Author(s)
      Munekazu Horikoshi
    • Organizer
      APCTP workshop on the the intersection of cold-atomic and nuclear physics
    • Place of Presentation
      APCTP, Pohang, Korea
    • Year and Date
      2015-05-12 – 2015-05-13
    • Invited
  • [Presentation] X線観測とCTA, Multiwavelength Astronomy and CTA: X-rays2015

    • Author(s)
      高橋忠幸
    • Organizer
      物理学会年会
    • Place of Presentation
      早稲田大学早稲田キャンパス、東京
    • Year and Date
      2015-03-21 – 2015-03-24
    • Invited
  • [Presentation] ASTRO-H計画の概要2015

    • Author(s)
      高橋忠幸
    • Organizer
      天文学会年会
    • Place of Presentation
      大阪大学、豊中
    • Year and Date
      2015-03-18 – 2015-03-21
    • Invited
  • [Presentation] Nuclear Matter in Neutron Stars by Experimental and Astronomical Observations2015

    • Author(s)
      T. Nakamura
    • Organizer
      Symposium on "Hadrons and Hadron Interactions in QCD 2015"
    • Place of Presentation
      YITP, Kyoto University, Kyoto, Japan
    • Year and Date
      2015-03-02 – 2015-03-06
    • Invited
  • [Presentation] Gamma-ray spectroscopy of hypernuclei -E13 and beyond-2014

    • Author(s)
      H. Tamura
    • Organizer
      Workshop on Progress on J-PARC hadron physic in 2014
    • Place of Presentation
      IQBRC, Tokai, Japan
    • Year and Date
      2014-11-30 – 2014-12-02
  • [Presentation] Strangeness Nuclear Physics and Exotic Matter in Neutron Stars2014

    • Author(s)
      H. Tamura
    • Organizer
      International Symposium on Physics of Unstable Nuclei 2014 (ISPUN2014)
    • Place of Presentation
      Ho Chi Minh city, Vietnam
    • Year and Date
      2014-11-03 – 2014-11-08
    • Invited
  • [Presentation] Nuclear Structure near and beyond the neutron drip line probed by breakup reactions2014

    • Author(s)
      T. Nakamura
    • Organizer
      International Symposium on Physics of Unstable Nuclei 2014 (ISPUN2014)
    • Place of Presentation
      Ho Chi Minh City, Vietnam
    • Year and Date
      2014-11-03 – 2014-11-08
    • Invited
  • [Presentation] Neutron star matter equation of state: current status and challenges2014

    • Author(s)
      A. Ohnishi
    • Organizer
      4th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
    • Place of Presentation
      Waikoloa, Hawaii, USA
    • Year and Date
      2014-10-07 – 2014-10-11
    • Invited
  • [Presentation] Prospect of strangeness nuclear physics at J-PARC2014

    • Author(s)
      H. Tamura
    • Organizer
      SPHERE meeting
    • Place of Presentation
      Prague, Czech republic
    • Year and Date
      2014-09-09 – 2014-09-11
    • Invited
  • [Presentation] Recent results and perspective on hypernuclei2014

    • Author(s)
      H. Tamura
    • Organizer
      Particles And Nuclei Inernational Conference (PANIC2014)
    • Place of Presentation
      Hamburg, Germany
    • Year and Date
      2014-08-25 – 2014-08-29
    • Invited
  • [Presentation] Island of Inversion Studied by Coulomb and Nuclear Breakup2014

    • Author(s)
      T. Nakamura
    • Organizer
      PKU-CUSTIPEN Nuclear Reaction Workshop, “Reactions and Spectroscopy of Unstable Nuclei”
    • Place of Presentation
      Peking University, Beijing, China
    • Year and Date
      2014-08-10 – 2014-08-14
    • Invited
  • [Presentation] Coulomb and nuclear breakup of exotic nuclei near the neutron drip line2014

    • Author(s)
      T. Nakamura
    • Organizer
      ECT* Workshop “Breakup Reactions of Exotic Nuclei and Related Topics”
    • Place of Presentation
      ECT*, Trento, Italy
    • Year and Date
      2014-07-16 – 2014-07-18
    • Invited
  • [Presentation] GEM production in Japan and applications2014

    • Author(s)
      T. Tamagawa
    • Organizer
      CERN seminar
    • Place of Presentation
      CERN, Geneva
    • Year and Date
      2014-07-14 – 2014-07-14
    • Invited
  • [Presentation] GEM production in Japan2014

    • Author(s)
      T. Tamagawa
    • Organizer
      Seminar
    • Place of Presentation
      Ecole Polytechnique LLR IN2P3, France
    • Year and Date
      2014-07-09 – 2014-07-09
    • Invited
  • [Presentation] Prospects of the nuclear symmetry energy research in Japan2014

    • Author(s)
      T. Murakami
    • Organizer
      International Symposium on Nuclear Symmetry Energy 2014(NuSYM14)
    • Place of Presentation
      University of Liverpool, Liverpool, UK
    • Year and Date
      2014-07-07 – 2014-07-09
    • Invited
  • [Presentation] Status and schedule of GET electronics2014

    • Author(s)
      T. Murakami
    • Organizer
      SAMURAI-TPC Collaboration Meeting
    • Place of Presentation
      RIKEN, Wako, Japan
    • Year and Date
      2014-06-24 – 2014-06-25
  • [Presentation] The ASTRO-H X-ray astronomy satellite2014

    • Author(s)
      T. Takahashi et al.
    • Organizer
      Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
    • Place of Presentation
      Montreal, Canada
    • Year and Date
      2014-06-22 – 2014-06-26
    • Invited
  • [Presentation] Results and Perspectives from J-PARC2014

    • Author(s)
      H. Tamura
    • Organizer
      Perspectives of high resolution hypernuclear spectroscopy at JLab
    • Place of Presentation
      Jefferson Laboratory, Newport News, Virginia, USA
    • Year and Date
      2014-05-27 – 2014-05-29
    • Invited
  • [Presentation] Weakly bound and unbound few-body nucleonic systems2014

    • Author(s)
      T. Nakamura
    • Organizer
      Workshop “Few-body universality in atomic and nuclear physics: Recent Experimental and Theoretical Advances”
    • Place of Presentation
      University of Washington, Seattle, USA
    • Year and Date
      2014-05-12 – 2014-05-16
    • Invited
  • [Book] 宇宙の物質はどのようにできたのか2015

    • Author(s)
      田村裕和 (日本物理学会編)
    • Total Pages
      20
    • Publisher
      日本評論社
  • [Remarks] 新学術領域「中性子星核物質」

    • URL

      http://lambda.pjhys.tohoku.ac.jp/nstar/

URL: 

Published: 2016-06-01  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi