An X-ray study of cosmic ray electrons and positrons from pulsar wind nebulae

• Project/Area Number: 24740167
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: University of Miyazaki
• Principal Investigator: MORI KOJI 宮崎大学, 工学部, 准教授 (00404393)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: パルサー星雲 / 宇宙線電子陽電子 / 超新星残骸 / TeV 未同定天体

Outline of Final Research Achievements

Pulsar wind nebulae (PWNe) are known as cosmic electron-positron accelerators. However, it has been unclear how the accelerated electrons and positrons escape from the pulsar and diffuse into surrounding space. Since such high energy particles emit X-ray, X-ray observation is the best probe to tackle this issue. In this study, we performed X-ray observations of the Vela PWN, which is the nearest to us. We found that there is a yet unknown component prevailing almost
isotropically in addition to already known complex structure around the pulsar. We also discovered new PWN candidates and estimated a metallicity of the progenitor of Kepler's supernova.

Research Products

• [Journal Article] Global Distribution of Ionizing and Recombining Plasmas in the Supernova Remnant G290.1$-$0.8 (2015)
  • Author(s): Kamitsukasa, Fumiyoshi; Koyama, Katsuji; Uchida, Hiroyuki; Nakajima, Hiroshi; Hayashida, Kiyoshi; Mori, Koji; Katsuda, Satoru; Tsunemi, Hiroshi
  • Journal Title: Pub. Astr. Soc. Japan Volume: 67-2 Issue: 2 Pages: 168-168
  • DOI: 10.1093/pasj/psu149
  • Peer Reviewed / Open Access
• [Journal Article] X-Ray Ejecta Kinematics of the Galactic Core-Collapse Supernova Remnant G292.0+1.8 (2015)
  • Author(s): Bhalerao, J., Park, S., Dewey, D., Hughes, J.P., Mori, K., and Lee, J-J.
  • Journal Title: The Astrophysical Journal Volume: 800 Issue: 1 Pages: 65-65
  • DOI: 10.1088/0004-637x/800/1/65
  • Peer Reviewed
• [Journal Article] Suzaku discovery of Fe K-shell line from the O-rich SNR G292.0+1.8 (2014)
  • Author(s): Kamitsukasa, Fumiyoshi; Koyama, Katsuji; Tsunemi, Hiroshi; Hayashida, Kiyoshi; Nakajima, Hiroshi; Takahashi, Hiroaki; Ueda, Shutaro; Mori, Koji; Katsuda, Satoru; Uchida, Hiroyuki
  • Journal Title: Pub. Astr. Soc. Japan Volume: 66-3 Issue: 3 Pages: 648-648
  • DOI: 10.1093/pasj/psu035
  • NAID: 40020140536
  • Peer Reviewed / Open Access
• [Journal Article] A Deep Chandra Observation of Oxygen-rich Supernova Remnant B0049-73.6 in the Small Magellanic Cloud (2014)
  • Author(s): Schenck, A., Park, S., Burrows, D.N., Hughes, J.P., Lee, J-J., and Mori, K.
  • Journal Title: A Deep Chandra Observation of Oxygen-rich Supernova Remnant B0049-73.6 in the Small Magellanic Cloud Volume: 791 Issue: 1 Pages: 50-50
  • DOI: 10.1088/0004-637x/791/1/50
  • Peer Reviewed
• [Journal Article] Asymmetry in the Observed Metal-rich Ejecta of the Galactic Type Ia Supernova Remnant G299.2-2.9 (2014)
  • Author(s): Post, S., Park, S., Badenes, C., Burrows, D.N., Hughes, J.P., Lee, J-J., Mori, K., and Slane, P.
  • Journal Title: The Astrophysical Journal Letters Volume: 792 Issue: 1 Pages: L20-L20
  • DOI: 10.1088/2041-8205/792/1/l20
  • Peer Reviewed
• [Journal Article] Dynamics of X-Ray-Emitting Ejecta in the Oxygen-Rich Supernova Remnant Puppis A Revealed by the XMM-Newton RGS (2013)
  • Author(s): Satoru Katsuda, Yutaka Ohira, Koji Mori, Hiroshi Tsunemi, Hiroyuki Uchida, Katsuji Koyama, and Toru Tamagawa
  • Journal Title: The Astrophysical Journal Volume: 768 Issue: 2 Pages: 182-190
  • DOI: 10.1088/0004-637x/768/2/182
  • Peer Reviewed
• [Journal Article] Spectral Variation of Hard X-Ray Emission from the Crab Nebula with the Suzaku Hard X-Ray Detector (2013)
  • Author(s): Kouzu, Tomomi; Tashiro, Makoto S.; Terada, Yukikatsu; Yamada, Shin'ya; Bamba, Aya; Enoto, Teruaki; Mori, Koji; Fukazawa, Yasushi; Makishima, Kazuo
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 65 Issue: 4 Pages: 74-74
  • DOI: 10.1093/pasj/65.4.74
  • Peer Reviewed
• [Journal Article] A Super-solar Metallicity for the Progenitor of Kepler's Supernova (2013)
  • Author(s): Park, S., Badenes, C., Mori, K. et al.,
  • Journal Title: The Astrophysical Journal Letters Volume: 767 Issue: 1 Pages: 10-14
  • DOI: 10.1088/2041-8205/767/1/l10
  • Peer Reviewed
• [Journal Article] A Suzaku Study of Ejecta Structure and Origin of Hard X-Ray Emission in the Supernova Remnant G156.2+5.7 (2012)
  • Author(s): Uchida, H., Tsunemi, H., Katsuda, S., Mori, K., Petre, R., and Yamaguchi, H.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 64 Pages: 61-70
  • NAID: 10030812595
  • Peer Reviewed
• [Journal Article] Discovery of a Pulsar Wind Nebula Candidate in the Cygnus Loop (2012)
  • Author(s): Katsuda, S., Tsunemi, H., Mori, K., Uchida, H., Petre, R., Yamada, S., and Tamagawa, T.
  • Journal Title: The Astrophysical Journal Letters Volume: 754 Issue: 1 Pages: 7-11
  • DOI: 10.1088/2041-8205/754/1/l7
  • Peer Reviewed
• [Journal Article] High-resolution X-Ray Spectroscopy of the Galactic Supernova Remnant Puppis A with XMM-Newton/RGS (2012)
  • Author(s): Satoru Katsuda, Hiroshi Tsunemi, Koji Mori, Hiroyuki Uchida, et al.
  • Journal Title: The Astrophysical Journal Volume: 756 Issue: 1 Pages: 49-57
  • DOI: 10.1088/0004-637x/756/1/49
  • Peer Reviewed
• [Presentation] 軟Ｘ線から硬Ｘ線の広帯域を高感度で撮像分光する小型衛星計画 NGHXT (2015)
  • Author(s): 森浩二、他25名
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] Ｘ線観測で明らかにしたケプラーの超新星の最大光度と周辺環境 (2015)
  • Author(s): 勝田哲、森浩二、他4名
  • Organizer: 日本天文学会2015年春季年会
  • Place of Presentation: 大阪大学
  • Year and Date: 2015-03-18 – 2015-03-21
• [Presentation] Studying Young and Old Supernova Remnants with the Upcoming ASTRO-H X-ray Mission (2015)
  • Author(s): Safi-Harb.S, Mori, K., 他30名
  • Organizer: American Astronomical Society, AAS Meeting #225
  • Place of Presentation: シアトル
  • Year and Date: 2015-01-04 – 2015-01-08
• [Presentation] 「チャンドラ」衛星による超新星残骸RCW 86南西端の再観測 (2014)
  • Author(s): 勝田哲、森浩二、大平豊、他11名
  • Organizer: 日本天文学会2014年秋季年会
  • Place of Presentation: 山形大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] すざくによる超新星残骸G290.1-0.8からの過電離プラズマの発見 (2014)
  • Author(s): 上司文善、小山勝二、常深博、林田清、中嶋大、上田周太朗、井上翔太、森浩二、勝田哲、内田裕之
  • Organizer: 日本天文学会2014年秋季年会
  • Place of Presentation: 山形大学
  • Year and Date: 2014-09-11 – 2014-09-13
• [Presentation] How large is the Vela pulsar wind nebula in X-ray? (2014)
  • Author(s): Mori,k., Katsuda, S., Uchida, H., and Tsunemi, H.
  • Organizer: Suzaku-MAXI 2014
  • Place of Presentation: 愛媛大学
• [Presentation] X線精密分光で明らかにする Puppis A SNR 爆発噴出物の運動学 (2013)
  • Author(s): 勝田哲、大平豊、森浩二、他4名
  • Organizer: 日本天文学会2013年秋季年会
  • Place of Presentation: 東北大学
• [Presentation] すざく衛星に搭載されたX線CCDカメラXISにおけるNXB強度の時間変動の調査 (2013)
  • Author(s): 尾崎駿介、磯田依里、吉留大貴、森浩二
  • Organizer: 日本天文学会2013年秋季年会
  • Place of Presentation: 東北大学
• [Presentation] すざく衛星搭載のX線CCDカメラXISにおける 1/4 window option 付データのゲイン補正方法の確立 (2013)
  • Author(s): 吉留大貴、瀬治山勇、冨加見千代、森浩二
  • Organizer: 日本天文学会2013年秋季年会
  • Place of Presentation: 東北大学
• [Presentation] Ｘ線天文衛星すざくおよびチャンドラを用いた小マゼラン星雲中の超新星残骸0049-73.6と0103-72.6の観測 (2013)
  • Author(s): 甲斐春菜、森浩二、Park Sangwook、勝田哲、常深博
  • Organizer: 日本天文学会2013年春季年会
  • Place of Presentation: 埼玉大学
• [Presentation] 白鳥座ループ超新星残骸中のパルサー星雲候補の発見 (2012)
  • Author(s): 勝田哲、常深博、森浩二、他4名
  • Organizer: 日本天文学会2012年秋季年会
  • Place of Presentation: 大分大学
• [Presentation] Pulsar and Pulsar Wind Nebulae as Supernova Remnants (2012)
  • Author(s): 森浩二
  • Organizer: SNSNR12 超新星と超新星残骸の融合研究会
  • Place of Presentation: 国立天文台
  • Invited
• [Remarks] 「ケプラーの超新星爆発」は金属を多く含む星の爆発だった
  • URL: http://www.miyazaki-u.ac.jp/news/20130408