Study on three-dimensional magnetic reconnection based on formation-flying spacecraft observations of the magnetosphere

• Project/Area Number: 15K05306
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Space and upper atmospheric physics
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: Hasegawa Hiroshi 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (50435799)
• Research Collaborator: NAKAMURA takuma ; SONNERUP bengt
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 磁気リコネクション / 磁気圏界面 / 磁気圏尾部 / 電子拡散領域 / 電子電磁流体力学 / 衛星直接観測 / 衛星編隊観測 / ケルビン－ヘルムホルツ不安定 / 編隊衛星観測 / エネルギー散逸 / 磁気フラックスロープ / 電子電磁流体

Outline of Final Research Achievements

Based on in-situ measurements by spacecraft of plasma and electromagnetic field, we studied the magnetic reconnection process in the geospace that plays a pivotal role in the transport of solar wind into Earth's magnetosphere and energy release during auroral expansion. We found that magnetic reconnection at the outer boundary of the magnetosphere, called the magnetopause, lasts for more than 5 hours along a line exceeding 70000 km, the largest-scale reconnection ever observed in the magnetosphere. Moreover, we successfully visualized multi-dimensional structures of the central small-scale region of magnetic reconnection observed in both the magnetopause and magnetotail.

Academic Significance and Societal Importance of the Research Achievements

太陽風プラズマやエネルギーの地球磁気圏流入の原因である磁気圏界面の磁気リコネクションが、磁気圏内で発生しているオーロラ関連現象を説明できるほど大規模に起きていることを人工衛星による直接観測によって実証できたことに意義がある。また、目に見えない宇宙プラズマや磁場の観測データから、磁気リコネクションの中心領域を可視化し、磁力線がつなぎ変わる仕組みを理解することにつながるデータ解析手法を確立したことの意義は大きい。

Research Products

• [Int'l Joint Research] Dartmouth College/Southwest Research Institute/NASA Goddard Space Flight Center(米国)
• [Int'l Joint Research] Austrian Academy of Science(オーストリア)
• [Int'l Joint Research] Uppsala University/Royal Institute of Technology(スウェーデン)
• [Int'l Joint Research] University of Bergen(ノルウェー)
• [Int'l Joint Research] Imperial College London/University College London(英国)
• [Int'l Joint Research]
• [Int'l Joint Research] Dartmouth College/Southwest Research Institute/NASA Goddard Space Flight Center(米国)
• [Int'l Joint Research] Austrian Academy of Science(オーストリア)
• [Int'l Joint Research] Uppsala University/Royal Institute of Technology(スウェーデン)
• [Int'l Joint Research] IRAP, University of Toulouse/Plasma Physics Laboratory(フランス)
• [Int'l Joint Research] Dartmouth College/Southwest Research Institute/NASA Goddard Space Flight Center(米国)
• [Int'l Joint Research] University of Toulouse/IRAP(フランス)
• [Int'l Joint Research] Space Research Institute(オーストリア)
• [Int'l Joint Research] Swedish Institute of Space Physics/Royal Institute of Technology(スウェーデン)
• [Int'l Joint Research] Dartmouth College/NASA Goddard Space Flight Center/University of California, Berkeley(米国)
• [Int'l Joint Research] Space Research Institute(オーストリア)
• [Int'l Joint Research] Universite de Toulouse/CNRS/LATMOS - UVSQ - CNRS(フランス)
• [Int'l Joint Research] University of Bergen(ノルウェー)
• [Int'l Joint Research] Belgian Institute of Space Aeronomy(ベルギー)
• [Int'l Joint Research]
• [Journal Article] Reconstruction of the Electron Diffusion Region of Magnetotail Reconnection Seen by the MMS Spacecraft on 11 July 2017 (2019)
  • Author(s): Hasegawa H.、Denton R. E.、Nakamura R.、Genestreti K. J.、Nakamura T. K. M.、Hwang K.-J.、Phan T. D.、Torbert R. B.、Burch J. L.、Giles B. L.、Gershman D. J.、Russell C. T.、Strangeway R. J.、Lindqvist P.-A.、Khotyaintsev Y. V.、Ergun R. E.、Kitamura N.、Saito Y.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 124 Issue: 1 Pages: 122-138
  • DOI: 10.1029/2018ja026051
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Structure of the Current Sheet in the 11 July 2017 Electron Diffusion Region Event (2019)
  • Author(s): Nakamura Rumi、Genestreti Kevin J.、Nakamura Takuma、Baumjohann Wolfgang、Varsani Ali、Nagai Tsugunobu、Bessho Naoki、Burch James L.、Denton Richard E.、Eastwood Jonathan P.、Ergun Robert E.、Gershman Daniel J.、Giles Barbara L.、Hasegawa Hiroshi、et al.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 124 Issue: 2 Pages: 1173-1186
  • DOI: 10.1029/2018ja026028
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Crescent-shaped electron distributions at the non-reconnecting magnetopause: Magnetospheric Multiscale observations (2019)
  • Author(s): Tang B. -B.、Li W. Y.、Graham D. B.、Rager A. C.、Wang C.、Khotyaintsev Yu. V.、Lavraud B.、Hasegawa H.、Zhang Y. -C.、Dai L.、Giles B. L.、Dorelli J. C.、Russell C. T.、Lindqvist P. -A.、Ergun R. E.、Burch J. L.
  • Journal Title: Geophysical Research Letters Volume: 46 Issue: 6 Pages: 3024-3032
  • DOI: 10.1029/2019gl082231
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Seasonal and Solar Wind Control of the Reconnection Line Location on the Earth's Dayside Magnetopause (2018)
  • Author(s): Hoshi Y.、Hasegawa H.、Kitamura N.、Saito Y.、Angelopoulos V.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 123 Issue: 9 Pages: 7498-7512
  • DOI: 10.1029/2018ja025305
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Measurement of the Magnetic Reconnection Rate in the Earth's Magnetotail (2018)
  • Author(s): Nakamura T. K. M.、Genestreti K. J.、Liu Y.‐H.、Nakamura R.、Teh W.‐L.、Hasegawa H.、Daughton W.、Hesse M.、Torbert R. B.、Burch J. L.、Giles B. L.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 123 Issue: 11 Pages: 9150-9168
  • DOI: 10.1029/2018ja025713
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Identifying 3-D Vortex Structures At/Around the Magnetopause Using a Tetrahedral Satellite Configuration (2018)
  • Author(s): Cai D.、Lembege B.、Hasegawa H.、Nishikawa K.-I.
  • Journal Title: Journal of Geophysical Research: Space Physics Volume: 123 Issue: 12
  • DOI: 10.1029/2018ja025547
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Determining L-M-N current sheet coordinates at the magnetopause from MMS data (2018)
  • Author(s): Denton, R. E., B. U. O. Sonnerup, C. T. Russell, H. Hasegawa, R. J. Strangeway, B. L. Giles, R. E. Ergun, P.-A. Lindqvist, R. B. Torbert, J. L. Burch, and S. K. Vines
  • Journal Title: Journal of Geophysical Research Space Physics Volume: 123 Issue: 3 Pages: 2274-2295
  • DOI: 10.1002/2017ja024619
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetic reconnection at a thin current sheet separating two interlaced flux tubes at the Earth's magnetopause (2018)
  • Author(s): Kacem, I., C. Jacquey, V. Genot, B. Lavraud, Y. Vernisse, A. Marchaudon, O. Le Contel, H. Breullard, T.-D. Phan, H. Hasegawa, et al. (34 authors in total)
  • Journal Title: Journal of Geophysical Research Space Physics Volume: 123 Issue: 3 Pages: 1779-1793
  • DOI: 10.1002/2017ja024537
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Reconstruction of the electron diffusion region observed by the Magnetospheric Multiscale spacecraft: First results (2017)
  • Author(s): Hasegawa, H., B. U. O. Sonnerup, R. E. Denton, T.-D. Phan, T. K. M. Nakamura, B. L. Giles, D. J. Gershman, J. C. Dorelli, J. L. Burch, R. B. Torbert, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, Y. V. Khotyaintsev, R. E. Ergun, P. A. Cassak, N. Kitamura, and Y. Saito
  • Journal Title: Geophysical Research Letters Volume: 44 Issue: 10 Pages: 4566-4574
  • DOI: 10.1002/2017gl073163
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Turbulent mass transfer caused by vortex induced reconnection in collisionless magnetospheric plasmas (2017)
  • Author(s): Nakamura T. K. M.、Hasegawa H.、Daughton W.、Eriksson S.、Li W. Y.、Nakamura R.
  • Journal Title: Nature Communications Volume: 8 Issue: 1 Pages: 1582-1582
  • DOI: 10.1038/s41467-017-01579-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mass and energy transfer across the Earth's magnetopause caused by vortex-induced reconnection (2017)
  • Author(s): Nakamura, T. K. M., S. Eriksson, H. Hasegawa, S. Zenitani, W. Y. Li, K. J. Genestreti, R. Nakamura, and W. Daughton
  • Journal Title: Journal of Geophysical Research Space Physics Volume: 122 Issue: 11 Pages: 11505-11522
  • DOI: 10.1002/2017ja024346
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electron dynamics surrounding the X-line in asymmetric magnetic reconnection (2017)
  • Author(s): Zenitani, S., H. Hasegawa, and T. Nagai
  • Journal Title: Journal of Geophysical Research Space Physics Volume: 122 Issue: 7 Pages: 7396-7413
  • DOI: 10.1002/2017ja023969
  • Peer Reviewed
• [Journal Article] Decay of mesoscale flux transfer events during quasi-continuous spatially extended reconnection at the magnetopause (2016)
  • Author(s): Hasegawa, H., N. Kitamura, Y. Saito, et al.
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 10 Pages: 4755-4762
  • DOI: 10.1002/2016gl069225
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Motion of the MMS spacecraft relative to the magnetic reconnection structure observed on 16 Oct 2015 at 1307 UT (2016)
  • Author(s): Denton, R. E., B. U. O. Sonnerup, H. Hasegawa, T. D. Phan, C. T. Russell, B. L. Giles, D. Gershman, and R. B. Torbert
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 11 Pages: 5589-5596
  • DOI: 10.1002/2016gl069214
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Reconnection guide field and quadrupolar structure observed by MMS on 16 October 2015 at 1307 UT (2016)
  • Author(s): Denton, R. E., B. U. O. Sonnerup, H. Hasegawa, T. D. Phan, C. T. Russell, R. J. Strangeway, B. L. Giles, and R. B. Torbert
  • Journal Title: Journal of Geophysical Research-Space Physics Volume: 121 Issue: 10 Pages: 9880-9887
  • DOI: 10.1002/2016ja023323
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Shift of the magnetopause reconnection line to the winter hemisphere under southward IMF conditions: Geotail and MMS observations (2016)
  • Author(s): Kitamura, N., H. Hasegawa, Y. Saito, I. Shinohara, S. Yokota, T. Nagai, C. J. Pollock, B. L. Giles, T. E. Moore, J. C. Dorelli, D. J. Gershman, L. A. Avanov, W. R. Paterson, V. Coffey, M. O. Chandler, J.-A. Sauvaud, B. Lavraud, R. B. Torbert, C. T. Russell, R. J. Strangeway, J. L. Burch
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 11 Pages: 5581-5588
  • DOI: 10.1002/2016gl069095
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Currents and associated electron scattering and bouncing near the diffusion region at Earth’s magnetopause (2016)
  • Author(s): Lavraud, B., Y. C. Zhang, Y. Vernisse, et al.
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 7 Pages: 3042-3050
  • DOI: 10.1002/2016gl068359
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Thick escaping magnetospheric ion layer in magnetopause reconnection with MMS observations (2016)
  • Author(s): Nagai, T, N. Kitamura, H. Hasegawa, I. Shinohara, S. Yokota, Y. Saito, R. Nakamura, B. L. Giles, C. J. Pollock, T. E. Moore, J. C. Dorelli, D. J. Gershman, W. R. Paterson, M. O. Chandler, V. Coffey, C. T. Russell, R. J. Strangeway, M. Oka, and J. L. Burch
  • Journal Title: Geophysical Research Letters Volume: 43 Issue: 12 Pages: 6028-6035
  • DOI: 10.1002/2016gl069085
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Reconstruction of the electron diffusion region (2016)
  • Author(s): Sonnerup, B. U. O., H. Hasegawa, R. E. Denton, and T. K. M. Nakamura
  • Journal Title: Journal of Geophysical Research-Space Physics Volume: 121 Issue: 5 Pages: 4279-4290
  • DOI: 10.1002/2016ja022430
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Signatures of complex magnetic topologies from multiple reconnection sites induced by Kelvin-Helmholtz instability (2016)
  • Author(s): Vernisse, Y., B. Lavraud, S. Eriksson, et al.
  • Journal Title: Journal of Geophysical Research-Space Physics Volume: 121 Issue: 10 Pages: 9926-9939
  • DOI: 10.1002/2016ja023051
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dawn-dusk asymmetries at the terrestrial magnetopause: Observations (2016)
  • Author(s): Haaland, S., H. Hasegawa, J. DeKeyser, and L. Maes
  • Journal Title: Geophysical Monograph Ser. Volume: N/A
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spatial dimensions of the electron diffusion region in anti-parallel magnetic reconnection (2016)
  • Author(s): Nakamura, T. K. M., R. Nakamura, and H. Haseagwa
  • Journal Title: Ann. Geophys. Volume: 34 Issue: 3 Pages: 357-367
  • DOI: 10.5194/angeo-34-357-2016
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Mass and energy transfer across the Earth’s magnetopause caused by the vortex-induced reconnection during northward IMF (2019)
  • Author(s): Nakamura, T. K. M., S. Eriksson, H. Hasegawa, K. Genestreti, R. Nakamura, W. Daughton, and W. Li
  • Organizer: MMS Community Science Workshop #4
  • Int'l Joint Research / Invited
• [Presentation] Test of polynomial reconstruction of the magnetic field (2019)
  • Author(s): Denton, R. E., R. B. Torbert, Y.-H. Liu, I. Dors, H. Hasegawa, B. U. O. Sonnerup, C. T. Russell, R. J. Strangeway, B. L. Giles, and J. L. Burch
  • Organizer: MMS Community Science Workshop #4
  • Int'l Joint Research
• [Presentation] Generation of turbulence in Kelvin-Helmholtz vortices at Earth’s magnetopause: MMS observations (2019)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, D. J. Gershman, N. Kitamura, Y. Hoshi, Y. Saito, A. F.-Vinas, B. L. Giles, C. T. Russell, B. Lavraud, Y. V. Khotyaintsev, and R. E. Ergun
  • Organizer: ISEE symposium “Recent progress in heliospheric physics by direct measurements of unexplored space plasmas”
  • Int'l Joint Research
• [Presentation] Reconstruction of space plasma structures from in-situ measurements (2019)
  • Author(s): Hasegawa, H.
  • Organizer: Toyama International Symposium on “Physics at the Cosmic Frontier”
  • Int'l Joint Research / Invited
• [Presentation] On the generation of turbulence observed in the flank of Earth's magnetosphere (2018)
  • Author(s): H. Hasegawa, T. K. M. Nakamura, D. J. Gershman, N. Kitamura, Y. Hoshi, Y. Saito, A. F.-Vinas, B. L. Giles, C. T. Russell, B. Lavraud, Y. V. Khotyaintsev, and R. E. Ergun
  • Organizer: JpGU 2018 Meeting
  • Int'l Joint Research
• [Presentation] Mass and energy transfer across the Earth's magnetopause caused by vortex-induced reconnection (2018)
  • Author(s): Nakamura, T. K. M., H. Hasegawa, S. Eriksson, W. Daughton, W. Y. Li, S. Zenitani, K. Genestreti, and R. Nakamura
  • Organizer: COSPAR 2018 42nd Assembly
  • Int'l Joint Research / Invited
• [Presentation] Reconstruction of the magnetotail reconnection region seen by MMS on 11 July 2017 (2018)
  • Author(s): Hasegawa, H., R. E. Denton, R. Nakamura, K. J. Genestreti, T. K. M. Nakamura, T. D. Phan, R. B. Torbert, J. L. Burch, B. L. Giles, D. J. Gershman, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, Y. V. Khotyaintsev, R. E. Ergun, N. Kitamura, and Y. Saito
  • Organizer: MMS Science Community Workshop #3
  • Int'l Joint Research
• [Presentation] Determining the velocity of a magnetic structure, with application to the 11 July 2017 magnetotail reconnection event (2018)
  • Author(s): R. E. Denton, R. Manuzzo, K. J. Genestreti, B. U. O. Sonnerup, G. Belmont, L. Rezeau, H. Hasegawa, C. T. Russell, R. J. Strangeway, R. B. Torbert, and J. L. Burch
  • Organizer: MMS Science Community Workshop #3
  • Int'l Joint Research
• [Presentation] Reconstruction of the electron diffusion region of magnetotail reconnection seen by the MMS spacecraft on 11 July 2017 (2018)
  • Author(s): Hasegawa, H., R. E. Denton, R. Nakamura, K. J. Genestreti, T. K. M. Nakamura, K.-J. Hwang, T. D. Phan, R. B. Torbert, J. L. Burch, B. L. Giles, D. J. Gershmain, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, Y. V. Khotyaintsev, R. E. Ergun, N. Kitamura, and Y. Saito
  • Organizer: Magnetic Reconnection in Space, Solar, Astrophysical, and Laboratory Plasmas (MR2018)
  • Int'l Joint Research / Invited
• [Presentation] The structure and geometry of magnetic reconnection regions (2018)
  • Author(s): Genestreti, K. J., J. L. Burch, R. B. Torbert, R. Nakamura, T. K. M. Nakamura, A. Varsani, C. Mouikis, M. R. Argall, S. A. Fuselier, P. A. Cassak, R. E. Ergun, H. Hasegawa, J. M. Webster, S. Wang, T.-D. Phan, M. Hesse, C. Norgren, P. Tenfjord, J. Eastwood, J. Stawarz, and S. Toledo-Redondo
  • Organizer: Magnetic Reconnection in Space, Solar, Astrophysical, and Laboratory Plasmas (MR2018)
  • Int'l Joint Research / Invited
• [Presentation] MMS衛星がみた地球磁気圏尾部リコネクション領域の構造 (2018)
  • Author(s): 長谷川 洋
  • Organizer: 宇治リコネクションワークショップ2018
• [Presentation] Generation of turbulence observed in magnetopause Kelvin-Helmholtz vortices: Revisiting Magnetospheric Multiscale observations on 8 September 2015 (2018)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, D. J. Gershman, N. Kitamura, Y. Hoshi, Y. Saito, A. F.-Vinas, B. L. Giles, C. T. Russell, B. Lavraud, Y. V. Khotyaintsev, and R. E. Ergun
  • Organizer: Fundamental Physical Processes in Solar-Terrestrial Research and Their Relevance to Planetary Physics 2018
  • Int'l Joint Research
• [Presentation] 磁気圏プラズマにおける渦内磁気リコネクションによる乱流輸送過程 (2018)
  • Author(s): 105.中村 琢磨，長谷川 洋，W. Daughton，S. Eriksson，W. Y. Li，中村 るみ
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Electron particle dynamics in collisionless magnetic reconnection (2017)
  • Author(s): Zenitani, S., T. Nagai, and H. Hasegawa
  • Organizer: The US-Japan Workshop and School on Magnetic Reconnection (MR2017)
  • Place of Presentation: Matsuyama
  • Year and Date: 2017-03-19
  • Int'l Joint Research
• [Presentation] Seasonal and solar wind control of the reconnection line location at the Earth’s dayside magnetopause (2017)
  • Author(s): Hoshi, Y., H. Hasegawa, N. Kitamura, and Y. Saito
  • Organizer: The US-Japan Workshop and School on Magnetic Reconnection (MR2017)
  • Place of Presentation: Matsuyama
  • Year and Date: 2017-03-19
  • Int'l Joint Research
• [Presentation] Event study of vortex-induced reconnection at the magnetopause using MMS observations and fully kinetic simulations (2017)
  • Author(s): Nakamura, T. K. M., H. Hasegawa, S. Eriksson, W. Li, W. Daughton, and R. Nakamura
  • Organizer: EGU General Assembly 2017
  • Int'l Joint Research
• [Presentation] Thin current sheet and plasma jet observed within a FTE by MMS (2017)
  • Author(s): Kacem, I., C. Jacquey, V. Genot, et al. (10th author of a total of 39 authors)
  • Organizer: EGU General Assembly 2017
  • Int'l Joint Research
• [Presentation] Large-scale context of a magnetopause Kelvin-Helmholtz event observed by the MMS spacecraft on 8 September 2015 (2017)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, N. Kitamura, B. L. Giles, C. T. Russell, Y. V. Khotyaintsev, R. E. Ergun, and Y. Saito
  • Organizer: Toulouse Magnetic Reconnection Workshop
  • Int'l Joint Research / Invited
• [Presentation] Large-scale context of a magnetopause Kelvin-Helmholtz event observed by the MMS spacecraft on 8 September 2015 (2017)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, N. Kitamura, B. L. Giles, C. T. Russell, Y. V. Khotyaintsev, R. E. Ergun, and Y. Saito
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Seasonal and solar wind control of the reconnection line location at the Earth’s dayside magnetopause (2017)
  • Author(s): Hoshi, Y., H. Hasegawa, N. Kitamura, and Y. Saito
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Thin current sheet and plasma jet observed within a FTE by MMS (2017)
  • Author(s): Kacem, I. M., V. Genot, C. Jacquey, et al. (10th author of a total of 40 authors)
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Currents and associated electron scattering and bouncing near the diffusion region at Earth’s magnetopause (2017)
  • Author(s): Lavraud, B., Y. C. Zhang, Y. Vernisse, et al. (28th author of a total of 50 authors)
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Event study of vortex-induced reconnection at the magnetopause using MMS observations and fully kinetic simulations (2017)
  • Author(s): Nakamura, T. K. M., H. Hasegawa, S. Eriksson, W. Li, W. Daughton, and R. Nakamura
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Asymmetry in mid-latitude reconnection site locations associated with the Kelvin-Helmholtz instability (2017)
  • Author(s): Vernisse, Y., B. Lavraud, S. Eriksson, et al. (19th author of a total of 37 authors)
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Electron dynamics surrounding the X-line in magnetopause-type asymmetric reconnection (2017)
  • Author(s): Zenitani, S., H. Hasegawa, and T. Nagai
  • Organizer: JpGU-AGU Joint Meeting 2017
  • Int'l Joint Research
• [Presentation] Waves and instabilities at the magnetopause and its boundary layers (2017)
  • Author(s): Hasegawa, H., D. J. Gershman, T. K. M. Nakamura, D. B. Graham, and Y. V. Khotyaintsev
  • Organizer: AGU Chapman Conference on Dayside Magnetosphere Interactions
  • Int'l Joint Research / Invited
• [Presentation] Evolution and its consequence of the magnetopause Kelvin-Helmholtz instability: MMS event on 8 September 2015 revisited (2017)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, N. Kitamura, D. J. Gershman, B. L. Giles, C. T. Russell, Y. V. Khotyaintsev, R. E. Ergun, M. Oka, and Y. Saito
  • Organizer: AGU Chapman Conference on Dayside Magnetosphere Interactions
  • Int'l Joint Research
• [Presentation] Seasonal and solar wind control of the reconnection line location at the Earth’s dayside magnetopause (2017)
  • Author(s): Hoshi, Y., H. Hasegawa, N. Kitamura, and Y. Saito
  • Organizer: AGU Chapman Conference on Dayside Magnetosphere Interactions
  • Int'l Joint Research
• [Presentation] Event study of vortex-induced reconnection at the magnetopause using MMS observations and fully kinetic simulations (2017)
  • Author(s): Nakamura, T. K. M., H. Hasegawa, S. Eriksson, W. Li, W. Daughton, and R. Nakamura
  • Organizer: AOGS 2017
  • Int'l Joint Research / Invited
• [Presentation] Generation of turbulence in magnetopause Kelvin-Helmholtz vortices: Revisiting the 2015-09-08 event (2017)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, D. J. Gershman, N. Kitamura, Y. Hoshi, Y. Saito, A. F.-Vinas, B. L. Giles, C. T. Russell, B. Lavraud, Y. V. Khotyaintsev, and R. E. Ergun
  • Organizer: MMS Science Working Team meeting
  • Int'l Joint Research
• [Presentation] Magnetospheric Multiscale observations of flux transfer event signatures (2017)
  • Author(s): Lavraud, B., I. Kacem, C. J. Farrugia, et al. (23th author out of a total of 41 authors)
  • Organizer: AGU 2017 Fall Meeting
  • Int'l Joint Research / Invited
• [Presentation] Revisting a magnetopause Kelvin-Helmholtz event seen by the MMS spacecraft on 9 September 2015: Large-scale context and wave properties (2017)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, D. J. Gershman, N. Kitamura, Y. Hoshi, Y. Saito, A. F.-Vinas, B. L. Giles, C. T. Russell, B. Lavraud, Y. V. Khotyaintsev, and R. E. Ergun
  • Organizer: AGU 2017 Fall Meeting
  • Int'l Joint Research
• [Presentation] Reconnection properties in Kelvin-Helmholtz instabilities (2017)
  • Author(s): Vernisse, Y., B. Lavraud, S. Eriksson, D. J. Gershman, J. Dorelli, C. J. Pollock, B. L. Giles, N. Aunai, L. A. Avanov, J. Burch, M. O. Chandler, V. N. Coffey, J. Dargent, R. Ergun, C. J. Farrugia, V. N. Genot, D. Graham, H. Hasegawa, et al. (18th of a total of 36 authors)
  • Organizer: AGU 2017 Fall Meeting
  • Int'l Joint Research
• [Presentation] Electron dynamics surrounding the X-line in asymmetric magnetic reconnection (2017)
  • Author(s): Zenitani, S., H. Hasegawa, and T. Nagai
  • Organizer: AGU 2017 Fall Meeting
  • Int'l Joint Research
• [Presentation] Reconstruction of the electron diffusion region observed by MMS: First results (2016)
  • Author(s): H. Hasegawa, B. U. O. Sonnerup, R. E. Denton, T. D. Phan, T. K. M. Nakamura, B. L. Giles, D. J. Gershman, J. C. Dorelli, J. L. Burch, R. B. Torbert, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, Y. V. Khotyaintsev, R. E. Ergun, N. Kitamura, and Y. Saito
  • Organizer: AGU 2016 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Motion of the MMS spacecraft through magnetic reconnection structures (2016)
  • Author(s): Denton, R. E., B. U. O. Sonnerup, H. Hasegawa, C. T. Russell, R. J. Strangeway, B. L. Giles, D. Gershman, and R. B. Torbert
  • Organizer: AGU 2016 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Occurrence pattern and motion of multiple X-lines at the dayside magnetopause (2016)
  • Author(s): Hoshi, Y., H. Hasegawa, N. Kitamura, and Y. Saito
  • Organizer: AGU 2016 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Shift of the magnetopause reconnection line to the winter hemisphere under southward IMF conditions: Geotail and MMS observations (2016)
  • Author(s): N. Kitamura, H. Hasegawa, Y. Saito, I. Shinohara, S. Yokota, T. Nagai, C. J. Pollock, B. L. Giles, T. E. Moore, J. C. Dorelli, D. J. Gershman, L. A. Avanov, W. R. Paterson, V. N. Coffey, M. O. Chandler, J. A. Sauvaud, B. Lavraud, R. B. Torbert, C. T. Russell, R. J. Strangeway, and J. L. Burch
  • Organizer: AGU 2016 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Currents and associated electron scattering and bouncing near the diffusion region at Earth’s magnetopause (2016)
  • Author(s): Lavraud, B., Y. C. Zhang, Y. Vernisse, et al.
  • Organizer: AG
  • Place of Presentation: San
  • Year and Date: 2016-12-12
  • Int'l Joint Research
• [Presentation] Reconstruction of the magnetic reconnection region observed by Magnetospheric Multiscale (2016)
  • Author(s): 長谷川 洋，B. U. O. Sonnerup, R. E. Denton, T. D. Phan, T. K. M. Nakamura, B. L. Giles, D. J. Gershman, J. C. Dorelli, J. L. Burch, R. B. Torbert, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, Y. V. Khotyaintsev, R. E. Ergun, 北村 成寿，齋藤 義文
  • Organizer: 地球電磁気・地球惑星圏学会第140回講演会
  • Place of Presentation: 福岡
  • Year and Date: 2016-11-19
• [Presentation] 昼側低緯度磁気圏境界面における磁気リコネクションジェットの統計解析による磁気リコネクションラインの位置の推定 (2016)
  • Author(s): 星 康人，長谷川 洋，北村 成寿，齋藤 義文
  • Organizer: 地球電磁気・地球惑星圏学会第140回講演会
  • Place of Presentation: 福岡
  • Year and Date: 2016-11-19
• [Presentation] 地球磁気圏のサイエンス (2016)
  • Author(s): 長谷川 洋
  • Organizer: 平成28年度磁気圏・電離圏シンポジウム
  • Place of Presentation: 相模原
  • Year and Date: 2016-10-14
  • Invited
• [Presentation] Reconstruction of the electron diffusion region observed by MMS: First results (2016)
  • Author(s): H. Hasegawa, B. U. O. Sonnerup, R. E. Denton, T. D. Phan, T. K. M. Nakamura, B. L. Giles, D. J. Gershman, J. C. Dorelli, J. L. Burch, R. B. Torbert, C. T. Russell, R. J. Strangeway, P.-A. Lindqvist, Y. V. Khotyaintsev, R. E. Ergun, N. Kitamura, and Y. Saito
  • Organizer: First MMS Community Science Workshop
  • Place of Presentation: Los Angeles
  • Year and Date: 2016-09-07
  • Int'l Joint Research
• [Presentation] Three-dimensional fully kinetic simulation of an MMS observation event of the vortex-induced reconnection at the magnetopause (2016)
  • Author(s): Nakamura, T. K. M, S. Eriksson, W. Daughton, W. Li, A. Sturner, R. Nakamura, F. Plaschke, and H. Hasegawa
  • Organizer: First MMS Community Science Workshop
  • Place of Presentation: Los Angeles
  • Year and Date: 2016-09-07
  • Int'l Joint Research
• [Presentation] Structure of the magnetopause during quasi-continuous spatially extended magnetic reconnection: Geotail and MMS conjunction on 2015-10-02 (2016)
  • Author(s): H. Hasegawa, N. Kitamura, Y. Saito, et al.
  • Organizer: JpGU 2016 Meeting
  • Place of Presentation: Chiba
  • Year and Date: 2016-05-22
  • Int'l Joint Research / Invited
• [Presentation] Japanese participation to MMS: Current status and future plan (2016)
  • Author(s): Saito, Y., S. Yokota, N. Kitamura, and H. Hasegawa
  • Organizer: JpGU 2016 Meeting
  • Place of Presentation: Chiba
  • Year and Date: 2016-05-22
  • Int'l Joint Research
• [Presentation] MMS satellites and EISCAT radar observations of dayside flow bursts (2016)
  • Author(s): Ieda, A., Y. Ogawa, S. Oyama, N. Kitamura, Y. Saito, S. Yokota, H. Hasegawa, S. Taguchi, K. Hosokawa, S. Machida, H. Uchino, T. Hori, C. Pollock, B. Giles, T. Moore, C. Russell, R. Strangeway, R. Nakamura, and J. Burch
  • Organizer: JpGU 2016 Meeting
  • Place of Presentation: Chiba
  • Year and Date: 2016-05-22
  • Int'l Joint Research
• [Presentation] 磁気圏の窓際を研究する (2016)
  • Author(s): 長谷川 洋
  • Organizer: 日本地球惑星科学連合2016年大会スペシャルレクチャー
  • Place of Presentation: 千葉
  • Year and Date: 2016-05-22
  • Invited
• [Presentation] Identifying Vortex-Core-Line using a tetrahedral satellite configuration: Field Topology Approach (2016)
  • Author(s): Jiang, Y.，B. Lembege，K.-I. Nishikawa，D. S. Cai，and H. Hasegawa
  • Organizer: EGU General Assembly 2016
  • Place of Presentation: Vienna
  • Year and Date: 2016-04-18
  • Int'l Joint Research
• [Presentation] Structure of Earth’s magnetopause during quasi-continuous extended magnetic reconnection: Geotail and MMS conjunction (2016)
  • Author(s): Hasegawa, H., N. Kitamura, Y. Saito, I. Shinohara, S. Yokota, T. Nagai, S. Zenitani, and the MMS team
  • Organizer: Future perspectives of researches in space physics
  • Place of Presentation: Nagoya
  • Year and Date: 2016-03-22
  • Int'l Joint Research / Invited
• [Presentation] Nearly simultaneous observations of southward reconnection jet at the magnetopause by Geotail and MMS under southward IMF conditions (2016)
  • Author(s): Kitamura, N., H. Hasegawa, Y. Saito, I. Shinohara, S. Yokota, T. Nagai, and the MMS team
  • Organizer: Future perspectives of researches in space physics
  • Place of Presentation: Nagoya
  • Year and Date: 2016-03-22
  • Int'l Joint Research
• [Presentation] MMS and EISCAT observations of dayside ionospheric flow bursts (2016)
  • Author(s): Ieda, A., Y. Ogawa, S. Oyama, N. Kitamura, Y. Saito, H. Hasegawa, S. Taguchi, T. Hori, and the MMS team
  • Organizer: Future perspectives of researches in space physics
  • Place of Presentation: Nagoya
  • Year and Date: 2016-03-22
  • Int'l Joint Research
• [Presentation] Structure of magnetic reconnection jets at the Earth’s dayside magnetopause: Geotail and MMS simultaneous observations (2016)
  • Author(s): H. Hasegawa, N. Kitamura, Y. Saito, I. Shinohara, S. Yokota, T. Nagai, C. J. Pollock, B. Giles, J. Dorelli, D. J. Gershman, L. Avanov, S. Kreisler, M. Chandler, V. Coffey, J. Burch, R. Torbert, T. E. Moore, C. T. Russell, R. J. Strangeway, G. Le, M. Oka, T. D. Phan, S. Zenitani, and M. Hesse
  • Organizer: The US-Japan Workshop on Magnetic Reconnection (MR2016)
  • Place of Presentation: Napa (California)
  • Year and Date: 2016-03-07
  • Int'l Joint Research / Invited
• [Presentation] The fine structure of the magnetosheath boundary layer during magnetic reconnection at the Earth’s magnetopause (2016)
  • Author(s): B. Lavraud, Y. Vernisse, D. J. Gershman, J. Dorelli, P. Cassak, C. Pollock, B. Giles, N. Aunai, M. Argall, L. Avanov, A. Barrie, J. Burch, M. Chandler, L.-J. Chen, G. Clark, I. Cohen, V. Coffey, J. Dargent, J. Eastwood, S. Eriksson, R. Ergun, C. J. Farrugia, S. A. Fuselier, V. Genot, H. Hasegawa, et al.
  • Organizer: The US-Japan Workshop on Magnetic Reconnection (MR2016)
  • Place of Presentation: Napa (California)
  • Year and Date: 2016-03-07
  • Int'l Joint Research
• [Presentation] Small-scale topological changes associated with magnetic reconnection during Kelvin-Helmholtz instability at the Earth’s Magnetopause (2016)
  • Author(s): Y. Vernisse, B. Lavraud, S. Eriksson, D. J. Gershman, J. Dorelli, C. Pollock, B. Giles, N. Aunai, L. Avanov, A. Barrie, J. Burch, M. Chandler, L.-J. Chen, G. Clark, V. Coffey, J. Dargent, F. D. Wilder, R. Ergun, C. J. Farrugia, V. Genot, H. Hasegawa, et al.
  • Organizer: The US-Japan Workshop on Magnetic Reconnection (MR2016)
  • Place of Presentation: Napa (California)
  • Year and Date: 2016-03-07
  • Int'l Joint Research
• [Presentation] Fast Plasma Measurements during Phase 1A of NASA's Magnetic Multiscale Mission: A First Assessment (2016)
  • Author(s): B. L. Giles, C. J. Pollock, J. Dorelli, D. J. Gershman, T. E. Moore, L. A. Avanov, A. Barrie, S. Boardsen, J. L. Burch, M. O. Chandler, L.-J.Chen, V. N. Coffey, H. Hasegawa, S. Kreisler, B. Lavraud, W. R. Paterson, T. D. Phan, A. C. Rager, C. T. Russell, Y. Saito, C. Schiff, S. Smith, R. B. Torbert, and A. F. Vinas
  • Organizer: The US-Japan Workshop on Magnetic Reconnection (MR2016)
  • Place of Presentation: Napa (California)
  • Year and Date: 2016-03-07
  • Int'l Joint Research
• [Presentation] Magnetic flux ropes at planetary magnetopauses (2015)
  • Author(s): Hasegawa, H.
  • Organizer: AGU 2015 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2015-12-14
  • Int'l Joint Research / Invited
• [Presentation] Kink-mode oscillations of the magnetotail current sheet driven by quasi-continuous reconnection during a steady magnetospheric convection: Geotail and THEMIS conjunction (2015)
  • Author(s): Hasegawa, H., I. Shinohara, T. Nagai, M. Hoshino, Y. Saito, V. Angelopoulos, M. Teramoto, and K. Higashimori
  • Organizer: AGU 2015 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] Spatial dimensions of the electron diffusion region of anti-parallel magnetic reconnection (2015)
  • Author(s): Nakamura, T. K. M., R. Nakamura, and H. Hasegawa
  • Organizer: AGU 2015 Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2015-12-14
  • Int'l Joint Research
• [Presentation] Science of MMS, Geotail and multi-spacecraft observations (2015)
  • Author(s): Hasegawa, H., Y. Saito, I. Shinohara, N. Kitamura, T. Nagai, S. Zenitani, and the MMS team
  • Organizer: ISAS workshop on magnetospheric plasmas
  • Place of Presentation: Tokyo
  • Year and Date: 2015-12-01
  • Int'l Joint Research
• [Presentation] A review of magnetopause and boundary layer studies in 2013-2015 (2015)
  • Author(s): 長谷川 洋
  • Organizer: 地球電磁気・地球惑星圏学会第138回講演会
  • Place of Presentation: 東京
  • Year and Date: 2015-10-31
• [Presentation] THEMIS衛星による昼側磁気圏境界面における磁束ロープの運動の観測 (2015)
  • Author(s): 星 康人，長谷川 洋，北村 成寿，齋藤 義文
  • Organizer: 地球電磁気・地球惑星圏学会第138回講演会
  • Place of Presentation: 東京
  • Year and Date: 2015-10-31
• [Presentation] What did we learn from Cluster observations at the magnetopause? (2015)
  • Author(s): Haaland, S., H. Hasegawa, M. W. Dunlop, R. Fear, B. Walsh, J. DeKeyser, B. U. O. Sonnerup, and G. Paschmann
  • Organizer: 25th Cluster workshop (Cluster 15th and Double Star 10th anniversary workshop)
  • Place of Presentation: Venice (Italy)
  • Year and Date: 2015-10-12
  • Int'l Joint Research / Invited
• [Presentation] Generation of turbulence in Earth’s magnetosphere (2015)
  • Author(s): Hasegawa, H., T. K. M. Nakamura, M. Hoshino, I. Shinohara, and T. Nagai
  • Organizer: International Workshop and School on solar system plasma turbulence, intermittency and multifractals (STORM 2015)
  • Place of Presentation: Mamaia (Romania)
  • Year and Date: 2015-09-06
  • Int'l Joint Research / Invited
• [Presentation] Identification of 3D vector field features using four satellite data and parallel vector method (2015)
  • Author(s): Cai, D., B. Lembege, Hasegawa, H.
  • Organizer: AOGS 2015
  • Place of Presentation: Singapore
  • Year and Date: 2015-08-02
  • Int'l Joint Research
• [Presentation] Reporter review: Magnetopause and boundary layers 2013-2015 (2015)
  • Author(s): Hasegawa, H.
  • Organizer: IUGG 26th General Assembly 2015
  • Place of Presentation: Prague (Czech Republic)
  • Year and Date: 2015-06-22
  • Int'l Joint Research / Invited
• [Presentation] 持続する磁気リコネクションジェットを伴う磁気圏尾部電流層の振動：ジオテイル衛星観測 (2015)
  • Author(s): 長谷川 洋，篠原 育，長井 嗣信，斎藤 義文
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 千葉
  • Year and Date: 2015-05-24
• [Presentation] Identification of 3D vortex structure using Cluster satellite magnetic field data (2015)
  • Author(s): Cai, D. S.，B. Lembege，and H. Hasegawa
  • Organizer: EGU General Assembly 2015
  • Place of Presentation: Vienna
  • Year and Date: 2015-04-12
  • Int'l Joint Research
• [Remarks] 宇宙の竜巻、太陽風プラズマを磁気圏へ導く
  • URL: http://www.isas.jaxa.jp/topics/001193.html
• [Remarks] 宇宙科学最前線 太陽風を大口で食べ続ける磁気圏
  • URL: http://www.isas.jaxa.jp/outreach/isas_news/files/ISASnews429.pdf
• [Remarks] オーロラエネルギーの摂取の仕組み ―GEOTAIL衛星とMMS衛星の日米共同観測
  • URL: http://www.isas.jaxa.jp/topics/000285.html
• [Remarks] 宇宙科学最前線 太陽風を大口で食べ続ける磁気圏
  • URL: http://www.isas.jaxa.jp/feature/forefront/161226.html
• [Remarks] The Magnetosphere Has a Large Intake
  • URL: http://www.isas.jaxa.jp/en/topics/000544.html