Mechanism of magnetic energy dissipation in weakly ionized solar atmospphere

• Project/Area Number: 22740121
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Kyoto University
• Principal Investigator: ISOBE Hiroaki 京都大学, 学際融合教育研究推進センター, 特任准教授 (90511254)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 太陽物理学 / 弱電離プラズマ / 磁気リコネクション / 彩層 / 磁気流体力学 / プロミネンス / 数値シミュレーション / 両極生拡散 / 太陽彩層

Research Abstract

We studied the magnetic energy dissipation mechanism of the fully collisional and weakly ionized plasma in the solar lower atomosphere by numerical simulation and analysis of the solar chromospheric jets observed by Solar Optical Telescope on Board Hinode space craft. We found that, similarly to the case in the fully ionized solar corona, intermittent and fast magnetic reconnection associated with plasmoids ejection is occurring also in the solar chromosphere. The cause of such intermittent and fast magnetic reconnection is the inhomogeneity of the ambipolar diffusion.

Research Products

• [Journal Article] Multiple Plasma Ejections and Intermittent Nature of Magnetic Reconnection in Solar Chromospheric Anemone Jets (2012)
  • Author(s): Singh,K.A.P, Isobe,H., Nishizuka,N., Nishida,K., Shibata,K
  • Journal Title: The Astrophysical Journal Volume: vol759 Pages: 33-47
• [Journal Article] Numerical Simulation of Three-dimensional Asymmetric Reconnection and Application to a Physical Mechanism of Penumbral Microjets (2012)
  • Author(s): Nakamura, N., Isobe, H., Shibata, K.
  • Journal Title: The Astrophysical Journal Volume: vol 761 Pages: 87-96
• [Journal Article] Systematic Motion of Fine-scale Jets and Successive Reconnection in Solar Chromospheric Anemone Jet Observed with the Solar Optical Telescope/Hinode (2012)
  • Author(s): Singh,K.A.P, Isobe,H., Nishida,K., Shibata,K
  • Journal Title: The Astrophysical Journal Volume: 760 Issue: 1 Pages: 28-32
  • DOI: 10.1088/0004-637x/760/1/28
  • Peer Reviewed
• [Journal Article] Numerical Simulation of Three-dimensional Asymmetric Reconnection and Application to a Physical Mechanism of Penumbral Microjets (2012)
  • Author(s): Nakamura, N., Isobe, H., Shibata, K..
  • Journal Title: The Astrophysical Journal Volume: 761 Issue: 2 Pages: 87-96
  • DOI: 10.1088/0004-637x/761/2/87
  • Peer Reviewed
• [Journal Article] Simultaneous Observation of Reconnection Inflow and Outflow Associated with the 2010 August 18 Solar Flare (2012)
  • Author(s): Takasao, S., Asai, A., Isobe, H., Shibata, K.
  • Journal Title: The Astrophysical Journal Volume: 745 Issue: 1 Pages: L6-L6
  • DOI: 10.1088/2041-8205/745/1/l6
  • Peer Reviewed
• [Journal Article] Numerical Simulations of the Magnetic Rayleigh-Taylor Instability in the Kippenhahn-Schlüter Prominence Model. I. Formation of Upflow (2012)
  • Author(s): Hillier, A., Berger, T., Shibata, K., Isobe, H.
  • Journal Title: The Astrophysical Journal Volume: 746 Issue: 2 Pages: 120-129
  • DOI: 10.1088/0004-637x/746/2/120
  • Peer Reviewed
• [Journal Article] Numerical Simulations of the Magnetic Rayleigh-Taylor Instability in the Kippenhahn-Schlüter Prominence Model. II. Reconnection-triggered Downflows (2012)
  • Author(s): Hillier, A., Isobe, H., Shibata, K., Berger, T.
  • Journal Title: The Astrophysical Journal Volume: 756 Issue: 2 Pages: 110-115
  • DOI: 10.1088/0004-637x/756/2/110
  • Peer Reviewed
• [Journal Article] Observations of Plasma Blob Ejection from a Quiescent Prominence by Hinode Solar Optical Telescope (2011)
  • Author(s): Hillier, A., Isobe, H., Watanabe, H.
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 63 Pages: 19-23
  • NAID: 10029037429
  • Peer Reviewed
• [Journal Article] Detailed analysis of fan-shaped jets in three dimensional numerical simulation (2011)
  • Author(s): Jiang. R.-L., Shibata, K., Isobe, H., Fang, C.
  • Journal Title: Research in Astronomy and AstrophysicS Volume: 11 Pages: 701-724
  • Peer Reviewed
• [Journal Article] Numerical Simulations of the Magnetic Rayleigh-Taylor Instability in the Kippenhahn-Schluter Prominence Model (2011)
  • Author(s): Hillier, A., Isobe, H., Shibata, K., Berger, T.
  • Journal Title: The Astrophysical Journal Letters Volume: 736
  • Peer Reviewed
• [Journal Article] Chromospheric Anemone Jets and Magnetic Reconnection in Partially Ionized Solar Atmosphere (2011)
  • Author(s): Singh, K.A.P., Shibata, K., Nishizuka, N., Isobe, H.
  • Journal Title: Physics of Plasmas Volume: 18
  • Peer Reviewed
• [Journal Article] Simultaneous Observation of Reconnection Inflow and Outflow Associated with the 2010 August 18 Solar Flare (2011)
  • Author(s): Takasao, S., Asai, A., Isobe, H., Shibata, K.
  • Journal Title: The Astrophysical Journal Letters Volume: 745
  • Peer Reviewed
• [Journal Article] Detailed Analysis of Fan-Shaped jets in Three Dimensional Numerical Simulation (2011)
  • Author(s): Jiang, R., Shibata, K., Isobe, H., Fang, C.
  • Journal Title: Research in Astronomy and Astrophysics Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Observations of Plasma Blob Ejection from a Quiescent Prominence by Hinode SOT (2011)
  • Author(s): Hiller, A., Isobe, H., Watanabe, H.
  • Journal Title: Publication of Astronomical Society of Japan Volume: (印刷中)
  • Peer Reviewed
• [Journal Article] Evolution of the Kippenhahn-Schluter Prominence Model Magnetic Field under Cowling Resistivity (2010)
  • Author(s): Hillier, A, Isobe, H., Shibata, K.
  • Journal Title: Publication of Astronomical Society of Japan Volume: 62 Pages: 1231-1237
  • NAID: 10027723963
  • Peer Reviewed
• [Journal Article] Fan-shaped Jets in Three-dimensional Reconnection Simulation as a Model of Ubiquitous Solar Jets (2010)
  • Author(s): Jiang, R., Shibata, K., Isobe, H., Fang, C.
  • Journal Title: The Astrophysical Journal Letters Volume: 726
  • Peer Reviewed
• [Presentation] Generation, transportation and dissipation of magnetic field in the Sun (2012)
  • Author(s): Isobe, H.
  • Organizer: Magnetic field in the Universe
  • Place of Presentation: 韓国・ポハン
  • Year and Date: 2012-11-19
• [Presentation] Magnetic Reconnection in Solar Atmosphere (2012)
  • Author(s): Isobe, H.
  • Organizer: Magietic Reconnection 2012
  • Place of Presentation: 米国・プリンストン
  • Year and Date: 2012-05-24
• [Presentation] Observations and modeling of magnetic reconnection in solar atmosphere (2012)
  • Author(s): Isobe, H.
  • Organizer: SDO-4 IRIS Hinode Workshop
  • Place of Presentation: Monterey, USA(招待講演)
  • Year and Date: 2012-03-15
• [Presentation] Magnetic Reconnection in Solar Atmosphere (2012)
  • Author(s): Isobe, H.
  • Organizer: Magnetic Reconnection 2012
  • Place of Presentation: Princeton Plasma Physics Laboratory （米国）
  • Invited
• [Presentation] Magnetic Reconnection in Solar Atmosphere (2012)
  • Author(s): Isobe, H.
  • Organizer: Solar-C Science Meeting
  • Place of Presentation: Unversity of St Andrews （英国）
  • Invited
• [Presentation] Generation, transportation and dissipation of magnetic field in the Sun (2012)
  • Author(s): Isobe, H.
  • Organizer: Magnetic field in the Universe
  • Place of Presentation: Pohang Unviersity of Science and Techonology (韓国）
  • Invited
• [Presentation] Magnetic Reconnection (2012)
  • Author(s): Isobe, H.
  • Organizer: SUVIT Science Meeting
  • Place of Presentation: 国立天文台（東京都）
  • Invited
• [Presentation] Magnetic reconnection in weakly ionized plasmas (2011)
  • Author(s): Isobe, Hiroaki
  • Organizer: US-Japan workshop on Magnetic Reconnection 2010
  • Place of Presentation: 奈良市(招待講演)
  • Year and Date: 2011-12-07
• [Presentation] Magnetic reconnection at various heights in the solar atmosphere (2011)
  • Author(s): Isobe, H.
  • Organizer: Hierarchical Self-Organization of Turbulence and flows in Plasmas, Oceans and Atmospheres
  • Place of Presentation: 京都大学百周年時計台記念館
  • Year and Date: 2011-10-26
• [Presentation] Magnetic reconnection in weakly ionized solar chromosphere (2011)
  • Author(s): Isobe, Hiroaki
  • Organizer: UAH workshop 2010 Partially Ionized Plasmas throughout the Cosmos
  • Place of Presentation: 米国・ナッシュヴィル(招待講演)
  • Year and Date: 2011-10-07
• [Presentation] 非一様な縦磁場、電離度分布下の弱電離磁気リコネクション (2011)
  • Author(s): 磯部洋明
  • Organizer: 日本天文学会年会
  • Place of Presentation: 金沢大学(金沢市)
  • Year and Date: 2011-09-23
• [Presentation] Magnetic reconnection and jets in the lower atmosphere (2011)
  • Author(s): Isobe, H.
  • Organizer: Flux Emergence Workshop 2011
  • Place of Presentation: Berkeley, USA
  • Year and Date: 2011-08-27
• [Presentation] Theoretical and Numerical Models of Solar Flares and Magnetic Reconnection (2011)
  • Author(s): Isobe, Hiroaki
  • Organizer: 1^<st> Asia Pacific Solar Physics Meeting
  • Place of Presentation: インド・バンガロール(招待講演)
  • Year and Date: 2011-03-23
• [Book] 最新画像で見る太陽 (2011)
  • Author(s): 柴田一成, 大山真満, 浅井歩, 磯部洋明
  • Publisher: ナノオプトニクスエナジー出版局