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[ some of my abstracts to meetings/conferences/workshops ]

Recent/Forthcoming Publications/Presentations

2014 ∼
m* Keiji Hayashi, "An MHD Simulation of AR11944 Using HMI Magnetic Field Data", (abstract submitted to) AGU fall meeting 2014 (#SH53A-4195), 15 - 19 December 2014 / San Francisco, CA
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M* Keiji Hayashi, Shangbin Yang and Yuanyong Deng, "Solar coronal structure in late 2013 obtained with the time-relaxation MHD simulation and potential field model", SCOSTEP's 13th Quadrennial Symposium on Solar Terrestrial Physics (STP13), (#94), 12 - 18 Oct. 2014 / Xi'an, China ; meeting website
J Shin Toriumi, Keiji Hayashi, and Takaaki Yokoyama, "Statistical Analysis of the Horizontal Divergent Flow in Emerging Solar Active Regions" (2014) ApJ, vol.794, id.19, doi:10.1088/0004-637X/794/1/19 ; link to ADS
M Satoshi Inoue, Keiji Hayashi, and Gwangson Choe, "Magnetohydrodynamic Simulation of the X2.2 Solar Flare on February 15 2011", 14th European Solar Physics Meeting, 8 - 12 Sep. 2014 / Dublin, Ireland ; meeting website
M* Keiji Hayashi, Shangbin Yang and Yuanyong Deng, "Solar coronal structures obtained with time-relaxation MHD simulation", 12th Sino-Russia Workshop of Space Weather, 25 - 29 Aug. 2014 / Zhengxiangbaiqi, Inner Mongolia, China ; meeting website
M Satoshi Inoue, Keiji Hayashi, and Gwangson Choe, "Magnetohydrodynamic Modeling of the Solar Flare Based on the Photospheric Magnetic Field", 12th Asia-Pacific Regional IAU meeting (APRIM), 18 - 22 Aug. 2014 / Daejeon, Korea ; meeting website
M Munetoshi Tokumaru, Ken'ichi Fujiki, Tomoya Iju, K. Hayashi, H. Washimi, and B.V. Jackson, "3D Reconstruction of the Heliosphere Using Interplanetary Scintillation Observations", AOGS2014 (#ST23-D2-AM1-EA-004), 28 July - 1 August 2014 / Sapporo, Japan
m Ken'ichi Fujiki, H. Washimi, K. Hayashi, G. Zank, M. Tokumaru, T. Tanaka, V. Florinski, and Y. Kubo, "Velocity Oscillation of Solar Wind in Outer Heliosphere Reconstructed by the Realistic 3D MHD Simulation", AOGS2014 (#ST33-D2-PM2-P-014), 28 July - 1 August 2014 / Sapporo, Japan ; meeting website
M Jun-Mo An, S. Inoue, T. Magara, H. Lee, J. Kang, K.-S. Kim, K. Hayashi, T. Tanaka, M. Den, and Y. Kubo, "Three-dimensional MHD modeling on propagation of coronal mass ejections with background solar wind driven by observational data" Asia Oceania Geosciences Society 11th Annual Meeting (AOGS2014) (#ST29-D2-AM2-EA-002), 28 July - 1 August 2014 / Sapporo, Japan
W Satoshi Inoue, Keiji Hayashi, and Gwangson Choe, "MHD Modeling of the X2.2 Solar Flare on 2011 February 15", Solar and Stellar Flares, 23 - 27 June 2014 / Prague, Czech ; meeting website
P Tae K. Kim, Nikolai V. Pogorelov, Sergey N. Borovikov, Keiji Hayashi, Bernard V. Jackson, Munetoshi Tokuramu, and Hsiu-Shan Yu, "Modeling the global heliosphere using IPS-driven time-dependent boundary conditions", (2014) Proceedings of 12th AIAC: Outstanding Problems in Heliophysics. From Coronal Heating to the Edge of the Heliosphere (held in Myrtle Beach, SC, on 15 - 19 April 2013; edited by Qiang Hu and Gary P. Zank), ASP conference series, vol.484, 91 ; link to ADS
J J. Todd Hoeksema, Yang Liu, Keiji Hayashi, Xudong Sun, Jesper Schou, Sebastien Couvidat, Aimee Norton, Monica Bobra, Rebecca Centeno, K. D. Leka, Graham Barnes, and Mike Turmon, "The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Overview and Performance", (2014) Solar Physics, vol.289(9), 3483 - 3530, doi:10.1007/s11207-014-0516-8 ; link to ADS
J R. Centeno, J. Schou, K. Hayashi, A. Norton, J. T. Hoeksema, Y. Liu, K. D. Leka, and G. Barnes, "The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Optimization of the Spectral Line Inversion Code for the Pipeline", (2014) Solar Physics, vol.289(9), 3531 - 3547, doi:10.1007/s11207-014-0497-7 ; link to ADS
J M. G. Bobra, X. Sun, J. T. Hoeksema, M. Turmon, Y. Liu, K. Hayashi, G. Barnes, and K. D. Leka, "The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs ---- Space-weather HMI Active Region", (2014) Solar Physics, vol.289(9), 3549 - 3578, doi:10.1007/s11207-014-0529-3 ; link to ADS
J S. Inoue, K. Hayashi, T. Magara, G. S. Choe, and Y. D. Park, "Magnetohydrodynamic Simulation of the X2.2 Solar Flare on 2011 February 15: I. Comparing with the Observations", (2014) ApJ vol.788(2), id.182, doi:10.1088/0004-637X/788/2/182 ; link to ADS
J Ken'ichi Fujiki, Haruichi Washimi, Keiji Hayashi, Gary P. Zank, Munetoshi Tokumaru, Takashi Tanaka, Vladimir Florinski, and Yuki Kubo "MHD Analysis of the Velocity Oscillations in the Outer Heliosphere", (2014) GRL, vol.41(5), L1420 - 1424, doi:10.1002/2014GL059391 ; link to ADS
J Y. Liu, J. T. Hoeksema, M. Bobra, K. Hayashi, P. W. Schuck, and X. Sun, "Magnetic Helicity in Emerging Solar Active Regions", (2014) ApJ, vol.785(1), id.13, doi:10.1088/0004-637X/785/1/13 ; link to ADS
W* K. Hayashi, M. Tokumaru, and H. Washimi, "Optimizing functions of density and temperature in MHD-IPS tomography", Huntsville workshop 2014 --- Solar and Stellar Processes from the Chromosphere to the Outer Corona, 23 - 27 March 2014 / Orlando, FL ; meeting website
2013
P S. P. Rajaguru, X. Sun, K. Hayashi, and S. Couvidat, "Reflection and refraction of (magneto-)acoustic waves at the magnetic canopy: further evidences from multi-height seismic data", (2013) Proceedings of NSO Workshop #27: Fifty Years of Seismology of the Sun and Stars (held in Tucson, AZ, on 6 - 10 May 2013 ; edited by K. Jain, S. C. Tripathy, F. Hill, J.W. Leibacher, and A. A. Pevtsov.), ASP conference series, vol.478, 345 - 348 ; link to ADS
M Aimee A. Norton, J T. Hoeksema, Keiji Hayashi, Yang Liu, Xudong Sun, Bruce H. McClintock, Eric Jones, and William M. Arden, "North-South Asymmetries: the Solar Dynamo and Hemispheric Coupling", AGU fall meeting 2013 (#SH33E-07), 9 - 13 December 2013 / San Francisco, CA
m Xudong Sun, J T. Hoeksema, Yang Liu, Keiji Hayashi, Alberto Sainz Dalda, and Aimee A. Norton, "The Polar Field Reversal of Solar Cycle 24 Observed by SDO/HMI", AGU fall meeting 2013 (#SH41A-2175), 9 - 13 December 2013 / San Francisco, CA
m Junmo An, Satoshi Inoue, Tetsuya Magara, Hwanhee Lee, Jihye Kang, Keiji Hayashi, Takashi Tanaka, and Mitsue Den, "Three-dimensional global MHD modeling of a coronal mass ejection interacting with the solar wind", AGU fall meeting 2013 (#SH53A-2140), 9 - 13 December 2013 / San Francisco, CA
J* Keiji Hayashi, "An MHD Simulation Model of Time-Dependent Global Solar Corona with Temporally Varying Solar Surface Magnetic Field Maps" (2013) JGR, vol.118(11), 6889 - 6906, doi:10.1029/2013JA018991 ; link to ADS
J S. Paul Rajaguru, Sebastien Couvidat, Xudong Sun, Keiji Hayashi, and Hannah Schunker, "Properties of high-frequency wave power halos around active regions: an analysis of multi-height data from HMI and AIA onboard SDO", (2013) Solar Physics, vol.287(1-2), 107 - 127, doi:10.1007/s11207-012-0180-9 ; link to ADS
PM Aimee A. Norton, Eric H. Jones, Yang Liu, Keiji Hayashi, J. T. Hoeksema, and Jesper Schou, "How much more can sunspots tell us about the solar dynamo?" (2013) Proceedings of the International Astronomical Union: Solar and Astrophysical Dynamos and Magnetic Activity, IAU Symposium, vol.294, 25 - 36, doi:10.1017/S1743921313002172 ; link to ADS
M* Keiji Hayashi, Jon T. Hoeksema, Yang Liu, Xudong Sun, Monica Bobra, and Aimee A. Norton, "A data-driven time-dependent three-dimensional MHD simulation of solar active regions with HMI vector magnetic field data", The 44th meeting of SPD (#302.04), 8 - 12 July 2013 / Bozeman, MT (abstract)
P* Keiji Hayashi, J. T. Hoeksema, Y. Liu, A. Norton, X. Sun, R. Centeno, G. Barnes, and K. D. Leka, "Making global map of the solar surface Br from the HMI vector magnetic field observations", (2013) Proceedings of GONG2012/LWS/SDO5/SOHO27, Eclipse on the Coral See: Cycle 24 Ascending (held in Palm Cove, Australia on 12 - 16 November 2012; edited by P. Cally, R. Erdelyi, and A. Norton), Journal of Physics Conference Series, vol.440, 012036, doi:10.1088/1742-6596/440/1/012036 ; link to ADS
J Satoshi Inoue, Keiji Hayashi, Daiko Shiota, Tetsuya Magara, and Gwangson Choe, "Magnetic Structure Producing X- and M-Class Solar Flares in Solar Active Region 11158", (2013) ApJ, vol.770(1), id.79, doi:10.1088/0004-637X/770/1/79 ; link to ADS
W S.P. Rajaguru, X. Sun, K. Hayashi, and S. Couvidat, "Reflection and refraction of (magneto-)acoustic waves at the magnetic canopy: further evidences from multi-height seismic data", NSO Workshop #27: 50 years of helioseismology of the Sun and Stars, 6 - 10 May 2013 / Tuscon, AZ
w* Keiji Hayashi and HMI vector magnetic field team, "A data-driven MHD simulation of solar active regions with HMI data", LWS/SDO workshop 2013, 3 - 8 March 2013 / Cambridge, MD
W Yang Liu, J. T. Hoeksema, M. Bobra, K. Hayashi, P. W. Schuck, and X. Sun, "Magnetic Helicity in Emerging Solar Active Regions: A Statistical Study", LWS/SDO workshop 2013, 3 - 8 March 2013 / Cambridge, MD
w B. Fleck, R. Centeno, M. Cheung, S. Couvidat, K. Hayashi, R. Rezaei, O. Steiner, and T. Straus, "On the Effects of the SDO Orbital Motion on the HMI Vector Magnetic Field Measurements", LWS/SDO workshop 2013, 3 - 8 March 2013 / Cambridge, MD
2012
m* Keiji Hayashi, A. A. Norton, Y. Liu, X. Sun, and J. T. Hoeksema, "Motion of magnetic elements at the solar equator observed by SDO/HMI", AGU fall meeting 2012 (#SH41D-2129), 3 - 7 December 2012 / San Francisco, CA
m Tae K. Kim, Keiji Hayashi, Munetoshi Tokumaru, Nikolai V. Pogorelov, and Sergey N. Borovikov, "Modeling the SW-LISM Interaction using the MHD-IPS Tomography", AGU fall meeting 2012 (#SH11A-2185), 3 - 7 December 2012 / San Francisco, CA
m Xudong Sun, J. T. Hoeksema, Y. Liu, A. Sainz-Dalda, A. Norton, and K. Hayashi, "The Dynamic Polar Magnetic Field Before Its Polarity Reversal", AGU fall meeting 2012 (#SH41D-2130), 3 - 7 December 2012 / San Francisco, CA
M Yang Liu, K. Hayashi, J. T. Hoeksema, A. A. Norton, Peter W. Schuck, and X. Sun, "Magnetic Helicity in Emerging Active Regions: A Statistical Study", AGU fall meeting 2012 (#SH53B-03), 3 - 7 December 2012 / San Francisco, CA
w* Keiji Hayashi, J. T. Hoeksema, Y. Liu, A. Norton, X. Sun, R. Centeno, G. Barnes, and K. D. Leka, "Making global map of the solar surface Br from the HMI vector magnetic field observations", GONG2012/LWS-SDO5/SOHO27 (#80), 12 - 16 November 2012 / Palm Cove, Queensland, Australia ; meeting website (abstract)
w Bernhard Fleck, K. Hayashi, Reza Rezaei, Nikola Vitas, Rebecca Centeno, Mark Cheung, Sebastien Couvidat, Catherine Fischer, Oskar Steiner, Thomas Straus, and Bartolomeo Viticchie, "On the Effects of the SDO Orbital Motion on the HMI Vector Magnetic Field Measurements", GONG2012/LWS-SDO5/SOHO27 (#153), 12 - 16 November 2012 / Palm Cove, Queensland, Australia
J X. Sun, J. T. Hoeksema, Y. Liu, Q. Chen, and K. Hayashi, "A Non-radial Eruption in Quadrupolar Magnetic Configuration with Coronal Null", (2012) ApJ, vol.757(2), id.149, doi:10.1088/0004-637X/757/2/149 ; link to ADS
J* Keiji Hayashi, "An MHD simulation model of time-dependent co-rotating solar wind", (2012) JGR, vol.117(A8), A08105, doi:10.1029/2011JA017490 ; link to ADS
w Shin Toriumi, K. Hayashi, and T. Yokoyama, "Observation of the Horizontal Divergent Flow as a Precursor of Solar Flux Emergence", Hinode 6 meeting, 14 - 17 August 2012 / St. Andrews, U.K.
P Tae K. Kim, N. V. Pogorelov, S. N. Borovikov, and K. Hayashi, "Numerical Modeling of Solar Wind Flow Using Interplanetary Scintillation Data as Boundary Conditions", (2012) Proceedings of Astronum 2011 (held in Valancia, Spain, on 13 - 17 June 2011 ; edited by N. V. Pogorelov, J. A. Font, E. Audit, and G. P. Zank), ASP conference series, vol.459, 209 - 215, link to ADS
P* Keiji Hayashi, H. Washimi, and M. Tokumaru, "The MHD simulation of the inner heliosphere over 9 years using the observation-based time-varying boundary data", (2012) Proceedings of 10th Annual International Astrophysics Conference (held in Maui, HI on 13 - 18 March 2011 ; edited by G. Li, N. Pogorelov, and G. P. Zank), AIP Conference Proceedings, vol.1436, 308 - 313, doi:10.1063/1.4723624 ; link to ADS
P Haruichi Washimi, K. Hayashi, M. Tokumaru, G. P. Zank, Q. Hu, T. Tanaka, V. Florinski, J. Adams, and Y. Kubo, "A Preliminary Analysis of Dynamic and Realistic Heliosphere Using Interplanetary Scintillation and Photospheric Magnetic Data", (2012) Proceedings of 10th Annual International Astrophysics Conference (held in Maui, HI on 13 - 18 March 2011 ; edited by G. Li, N. Pogorelov, and G. P. Zank), AIP Conference Proceedings, vol.1436, 350 - 355, doi:10.1063/1.4723630 ; link to ADS
J Y. Liu, J. T. Hoeksema, P. H. Scherrer, J. Schou, S. Couvidat, R. I. Bush, T. L. Duvall, K. Hayashi, X. Sun, and X. Zhao, "Comparison of Line-of-Sight Magnetograms Taken by the Solar Dynamics Observatory/Helioseismic and Magnetic Imager and Solar and Heliospheric Observatory/Michelson Doppler Imager", (2012) Solar Physics, vol.279(1), 295 - 316, doi:10.1007/s11207-012-9976-x ; link to ADS
m* Keiji Hayashi, Yang Liu, Xudong Sun, Michael J. Turmon, and HMI vector magnetic field team, "Making the daily-updated synoptic map of HMI line-of-sight magnetogram cooperating with the HARP", SPD 43rd / AAS 220th meeting 2012 (#207.16), 10 - 14 June 2012 / Anchorage, AK ; BAAS vol.44 (abstract)
m* Keiji Hayashi and HMI vector magnetic field team, "Daily Coronal MHD Simulation Using HMI Near-Real-Time Magnetograms", SPD 43rd / AAS 220th meeting 2012 (#521.21), 10 - 14 June 2012 / Anchorage, AK ; BAAS vol.44 (abstract)
m Bernhard Fleck, K. Hayashi, R. Rezaei, N. Vitas, R. Centeno, Mark Cheung, S. Couvidat, C. Fischer, O. Steiner, T. Straus, and B. Viticchie, "On The Magnetic-Field Diagnostics Potential of SDO/HMI", SPD 43rd / AAS 220th meeting 2012 (#207.01), 10 - 14 June 2012 / Anchorage, AK ; BAAS vol.44
M Xudong Sun, T. Hoeksema, Y. Liu, X. P. Zhao, and K. Hayashi, "A Portrait of the Magnetic Sun: Observation and Modeling at Global and Active Region Scales", SPD 43rd / AAS 220th meeting 2012 (#322.06), 10 - 14 June 2012 / Anchorage, AK ; BAAS vol.44
m Shin Toriumi, K. Hayashi, and T. Yokoyama, "Detection of the Horizontal Divergent Flow (HDF) as a Precursor of Sunspot Emergence ", SPD 43rd / AAS 220th meeting 2012 (#512.03), 10 - 14 June 2012 / Anchorage, AK ; BAAS vol.44
J Shin Toriumi, Keiji Hayashi, and Takaaki Yokoyama, "Detection of the Horizontal Divergent Flow prior to the Solar Flux Emergence", (2012) ApJ, vol.751(2), id.154, doi:10.1088/0004-637X/751/2/154 ; link to ADS
J Xudong Sun, J. Todd Hoeksema, Yang Liu, Thomas Wiegelmann, Keiji Hayashi, Qingrong Chen, and Julia Thalmann, "Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation", (2012) ApJ, vol.748(2), id.77, doi:10.1088/0004-637X/748/2/77 ; link to ADS
P Yang Liu, P. H. Scherrer, J. T. Hoeksema, J. Schou, T. Bai, J. G. Beck, M. Bobra, R. S. Bogart, R. S., R. I. Bush, S. Couvidat, K. Hayashi, A. G. Kosovichev, T. P. Larson, C. Rabello-Soares, X. Sun, R. Wachter, J. Zhao, X. P. Zhao, T. L. Duvall Jr., M. L. DeRosa, C. J. Schrijver, A. M. Title, R. Centeno, S. Tomczyk, J. M. Borrero, A. A. Norton, G. Barnes, A. D. Crouch, K. D. Leka, W. P. Abbett, G. H. Fisher, B. T. Welsch, K. Muglach, P. W. Schuck, T. Wiegelmann, M. Turmon, J. A. Linker, Z. Mikic, P. Riley, and S. T. Wu, "A First Look at Magnetic Field Data Products from SDO/HMI", (2012) Proceedings of 4th Hinode Science Meeting (held in Palermo, Italy on 11 - 15 October 2010 ; edited by R. Rubio, F. Reale, and M. Carlsson), ASP conference series, vol.455, 337 ; link to ADS
w* Keiji Hayashi, J. Todd Hoeksema, Y. Liu, X. Sun, R. Centeno, K. D. Leka, and G. Barnes, "The synoptic maps of Br from HMI observations", LWS/SDO-4/IRIS/Hinode workshop, 12 - 16 March 2012 / Monterey, CA ; meeting website
w Bernhard Fleck, K. Hayashi, R. Rezaei, N. Vitas, R. Centeno, M. Cheung, S. Couvidat, C. Fischer, O. Steiner, T. Straus, and B. Viticchie, "On the Magnetic-Field Diagnostics Potential of SDO/HMI", LWS/SDO-4/IRIS/Hinode workshop, 12 - 16 March 2012 / Monterey, CA
w Xudong Sun, J. Todd Hoeksema, Y. Liu, and K. Hayashi, "Recurrent Eruptions in a Quadrupolar Magnetic Configuration Observed by SDO", LWS/SDO-4/IRIS/Hinode workshop, 12 - 16 March 2012 / Monterey, CA
2011
M* Keiji Hayashi and HMI vector magnetic field team, "HMI/SDO results with the vector magnetic field data" (invited), AGU fall meeting 2011 (#SH33C-03) 5 - 9 December 2011 / San Francisco, CA
m Rebecca Centeno, Graham Barnes, Juan Borrero, Sebastien P. Couvidat, Keiji Hayashi, J. T. Hoeksema, K. D. Leka, Yang Liu, Jesper Schou, Peter W. Schuck, Xudong Sun, and Steven Tomczyk, "HMI vector magnetic field products: the long-awaited release has come! Now what?", AGU fall meeting 2011 (#SH31A-1985), 5 - 9 December 2011 / San Francisco, CA
m Xudong Sun, J. T. Hoeksema, Yang Liu, Thomas Wiegelmann, and Keiji Hayashi, "Evolution of Magnetic Field in the Flaring Active Region AR 11158 Based on SDO/HMI Observation", AGU fall meeting 2011 (#SH31A-1993), 5 - 9 December 2011 / San Francisco, CA
m Alexander Kosovichev, P. Desai, and K. Hayashi, "Amazing M9-flare: sunquakes, white light emission and magnetic restructuring", AGU fall meeting 2011 (#SH33A-2042), 5 - 9 December 2011 / San Francisco, CA
m Tae K. Kim, Sergey N. Borovikov, Keiji Hayashi, and Nikolai V. Pogorelov, "Numerical Modeling of the Heliosphere Using Interplanetary Scintillation Data as Boundary Conditions", AGU fall meeting 2011 (#SH11B-1918), 5 - 9 December 2011 / San Francisco, CA
M Haruichi Washimi, Keiji Hayashi, Munetoshi Tokumaru, Gary P. Zank, Qiang Hu, Takashi Tanaka, Vladimir A. Florinski, James H. Adams, and Yuki Kubo, "A dynamic and realistic heliospheric modeling using interplanetary scintillation and photospheric magnetic data" (invited), AGU fall meeting 2011 (#SH43D-04) 5 - 9 December 2011 / San Francisco, CA
w* Keiji Hayashi, Yang Liu, Xudong Sun, J. Todd Hoeksema, Rebecca Centeno-Elliott, Graham Barnes, and K. D. Leka, "The synoptic maps of Br from HMI observations: better input for the global coronal models", LWS/SDO-3/SOHO-26/GONG-2011 workshop (poster, #27), 31 October - 4 November 2011 / Stanford, CA ; meeting website
w Bernhard Fleck, K. Hayashi, R. Rezaei, N. Vitas, R. Centeno, S. Couvidat, C. Fischer, O. Steiner, T. Straus, and B. Viticchie, "On the Magnetic-Field Diagnostics Potential of SDO/HMI", LWS/SDO-3/SOHO-26/GONG-2011 workshop, 31 October - 4 November 2011 / Stanford, CA
w Alexander Kosovichev, Priya Desai, and Keiji Hayashi, "Strong photospheric impact of M-class flare: helioseismic response, white light emission and magnetic restructuring", LWS/SDO-3/SOHO-26/GONG-2011 workshop, 31 October - 4 November 2011 / Stanford, CA
W Xudong Sun, J. Todd Hoeksema, Yang Liu, Thomas Wiegelmann, Keiji Hayashi, Qingrong Chen, and Julia Thalmann, "Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation" LWS/SDO-3/SOHO-26/GONG-2011 workshop, 31 October - 4 November 2011 / Stanford, CA
P* Keiji Hayashi, M. Tokumaru, K. Fujiki, and M. Kojima, "Three-Dimensional Solar Wind Structures Obtained with MHD Simulation Model Using Observation-Based Time-Varying Inner Boundary Map", (2011) Proceedings of Astronum 2010 (held in San Diego, CA on 13 - 18 June 2010 ; edited by N. Pogorelov, E. Audit, and G. P. Zank), ASP conference series, vol.444, 111 - 116 ; link to ADS
W Xudong Sun, J. T. Hoeksema, Y. Liu, T. Wiegelmann, and K. Hayashi, "Magnetic Field Topology and Energetics in the Flaring Active Region 11158", Stereo-4/SDO-2/SOHO-25 Workshop, 25 - 29 July 2011 / Kiel, Germany
m* Keiji Hayashi, X. Zhao, Y. Liu, X. Sun, J. T. Hoeksema, and HMI vector magnetic field team, "MHD simulation of the solar corona in early August 2010 using the HMI magnetic field data", AAS/42nd SPD meeting, 2011 (#21.20), 12 - 16 June 2011 / Las Cruces, NM ; BAAS vol.43
m Xudong Sun, J. T. Hoeksema, Y. Liu, T. Wiegelmann, and K. Hayashi, "Evolution of magnetic field in the flaring active region 11158 observed by SDO/HMI", AAS/42nd SPD meeting, 2011 (#21.01), 12 - 16 June 2011 / Las Cruces, NM ; BAAS vol.43
m Yang Liu, J. T. Hoeksema, K. Hayashi, X. Sun, P. Schuck, and K. Muglach, "Studying solar active regions with HMI data", AAS/42nd SPD meeting, 2011 (#21.02), 12 - 16 June 2011 / Las Cruces, NM ; BAAS vol.43
P R. Centeno, S. Tomczyk, J. M. Borrero, S. Couvidat, K. Hayashi, J. T. Hoeksema, Y. Liu, and J. Schou, "HMI: First results", (2011) Proceedings of the Solar Polarization Workshop 6 (held in Maui, HI on May 30 - June 4 2010 ; edited by J. R. Kuhn, D. M. Harrington, H. Lin, S. V. Berdyugina, J. Trujillo-Bueno, S. L. Keil, and T. Rimmele), Astronomical Society of the Pacific (ASP) conference series, vol.437, 147 - 156, Astronomical Society of the Pacific, San Francisco ; link to ADS
w* K. Hayashi, X. P. Zhao, Y. Liu, J. T. Hoeksema, and X. Sun, "MHD simulation of the solar corona in early August using the HMI magnetic field data", LWS/SDO-1 Workshop, 1 - 5 May 2011 / Squaw Valley, CA ; meeting website
w Y. Liu, J. T. Hoeksema, K. Hayashi, X. Sun, Peter W. Schuck, and Karin Muglach, "Studying solar active regions with HMI data", LWS/SDO-1 Workshop, 1 - 5 May 2011 / Squaw Valley, CA
W R. Centeno, S. Tomczyk, G. Barnes, J. Borrero, S. Couvidat, K. Hayashi, T. Hoeksema, K. D. Leka, Y. Liu, J. Schou, P. Schuck, and X. Sun, "HMI vector field results ---- and why a year down the line we have not made the data available for science analysis", LWS/SDO-1 Workshop, 1 - 5 May 2011 / Squaw Valley, CA
W Xudong Sun, J. Todd Hoeksema, Yang Liu, Thomas Wiegelmann, and Keiji Hayashi, "Evolution of Magnetic Field in the Flaring Active Region 11158 Observed by SDO/HMI", LWS/SDO-1 Workshop, 1 - 5 May 2011 / Squaw Valley, CA
J X. Sun, Y. Liu, J. T. Hoeksema, K. Hayashi, and X. P. Zhao, "A New Method for Polar Field Interpolation", (2011) Solar Physics, vol.270-1, 9 - 22, doi:10.1007/s11207-011-9751-4 ; link to ADS
W* K. Hayashi, H. Washimi, and M. Tokumaru, "An MHD Simulation Model of the Inner Heliosphere over 9 Years using the Observation-based Time-varying Boundary Data", 10th Annual International Astrophysics Conference (AIAC), 13 - 18 March 2011 / Maui, HI ; meeting website
W H. Washimi, G. P. Zank, Q. Hu, K. Hayashi, and Y. Kubo, "MHD Analysis of Dynamic and Realistic Heliosphere using Voyager 2 and Interplanetary Scintillation Data", 10th Annual International Astrophysics Conference (AIAC), 13 - 18 March 2011 / Maui, HI
2010
m* K. Hayashi and HMI vector magnetic field team, "MHD simulation of the evolution of the solar corona around August 1st 2010 using the HMI solar magnetic field data", AGU fall meeting 2010 (#SH11A-1618), 13 - 17 December 2010 / San Francisco, CA
m X. Sun, J. T. Hoeksema, T. Wiegelmann, K. Hayashi, and Y. Liu, "First Result of Field Extrapolation Based on HMI Vector Magnetic Data", AGU fall meeting 2010 (#SH11A-1607), 13 - 17 December 2010 / San Francisco, CA
w* K. Hayashi, "A three-dimensional MHD simulation of the solar wind in the heliosphere with time-varying observation-based inner-heliospheric boundary data", ACCEHS (Advanced Computational Capabilities for Exploration in Heliophysical Science) meeting, 16 - 18 August 2010 / Boulder, CO ; meeting website
W* K. Hayashi, "The three-dimensional MHD simulation model of the solar wind in the heliosphere with the boundary treatments for time-varying observation-based boundary data", Astronum 2010 (5th international conference on numerical modeling of space plasma flows), 13 - 18 June 2010 / San Diego, CA ; meeting website
m* Keiji Hayashi and HMI vector magnetic field team, "The Magnetic Field of the Quiet Sun Regions From HMI, for Better Input to the Global Models", 216th AAS meeting (#402.16), 23 - 27 May 2010 / Miami, FL ; BAAS vol.42 p.875
w* K. Hayashi, HMI vector magnetic field team at Stanford university, HAO, NWRA/CoRA, Predictive Science Inc.(PSI), U. C. Berkeley, and U. A. Huntsville, "Model products in HMI magnetic pipeline (II)", The SDO science working group meeting, 6 Feb. 2010 / Titusville, FL
2009
m* Keiji Hayashi, "MHD simulations of the solar corona and solar wind with the observation-based time-varying boundary maps of Br and other variables", AGU fall meeting 2009 (#SH21A-1492), 14 - 18 December 2009 / San Francisco, CA
W* Keiji Hayashi and HMI vector magnetic field team, "MHD model in HMI pipeline", SDO HMI/AIA Science Team Meeting, 8 - 11 September 2009 / Stanford, CA ; meeting website
m* Keiji Hayashi, "MHD Simulation of the Solar Corona Driven by the Time-Varying Solar-Surface Boundary Magnetic Field Based on The SOHO/MDI Measurement Data", AAS / 40th SPD meeting (#16.06), 14 - 18 June 2009 / Boulder, CO ; BAAS vol.41 p.840
J M. Tokumaru, M. Kojima, K. Fujiki, and K. Hayashi, "Non-dipolar solar wind structure observed in the cycle 23/24 minimum", (2009) GRL, vol.36(9), L09101, doi:10.1029/2009GL037461 ; link to ADS
2008
m* K. Hayashi, M. Tokumaru, M. Kojima, and K. Fujiki, "The MHD simulation of interplanetary space and heliosphere by using the boundary conditions of time-varying magnetic field and IPS-based plasma", AGU fall meeting (#SH13B-1548), 15 - 19 December 2008 / San Francisco, CA
m M. Tokumaru, M. Kojima, K. Fujiki, and K. Hayashi, "Unusual solar wind structure observed during the 2008 sunspot minimum", AGU fall meeting 2008 (#SH23A-1619), 15 - 19 December 2008 / San Francisco, CA
m R. Kataoka, Y. Miyoshi, and K. Hayashi, "Numerical space weather forecast of the solar wind and radiation belts", AGU fall meeting 2008 (#SH51A-1543), 15 - 19 December 2008 / San Francisco, CA
J Alberto M. Vasquez, Richard A. Frazin, Keiji Hayashi, Igor V. Sokolov, Ofer Cohen, Ward B. Manchester IV, and Farzad Kamalabadi, "Validation of Two MHD Models of the Solar Corona with Rotational Tomography", (2008) ApJ, vol.682(2), 1328 - 1337, doi:10.1086/589682 ; link to ADS
J* Keiji Hayashi, Xue Pu Zhao, and Yang Liu, "MHD Simulations of the Global Solar Corona around the Halloween Event in 2003 Using the Synchronic Frame Format of the Solar Photospheric Magnetic Field", (2008) JGR, vol.113(A7), A07104, doi:10.1029/2007JA012814 ; link to ADS
m* Keiji Hayashi, "An MHD simulation model of the global solar corona with the time-varying boundary magnetic field based on the measurement data", SPD/AGU joint assembly 2008 (#SH51B-02), 27 - 30 May 2008 / Fort Lauderdale, FL
w* Keiji Hayashi, Xudong Sun, and Yang Liu, "MHD simulation of the solar corona using the daily-updated solar surface magnetic field data", SDO Science Teams Meeting, 25 - 28 March 2008 / Napa, CA ; meeting website
2007
W* K. Hayashi, "From the Sun to the Earth ---- MHD models connecting observable and invisible regions (original title given in Japanese)", GEMSIS workshop, 26 - 28 December 2007 / Inuyama, Japan
J M. Kojima, M. Tokumaru, K. Fujiki, K. Hayashi, and B. V. Jackson, "IPS tomographic observations of 3D solar wind structure", (2007) A&AT (Astronomical and Astrophysical Transactions), vol.26(6), 467 - 476 ; link to ADS
m* K. Hayashi, "An MHD simulation model of the global solar corona with the time-varying boundary magnetic field driven with the current at the lower corona", AGU fall meeting 2007 (#SH53A-1072), 10 - 14 December 2007 / San Francisco, CA (abstract)
M T. Satoh, J. E. Connerney, A. Morioka, M. Tokumaru, and K. Hayashi, "Magnetic Reconnection Indicated in Jupiter's H3+ Auroral Flux Variations", AAS/39th DPS (Division of Planetary Science) meeting (#4.08), 7 - 12 October 2007 / Orlando, FL ; BAAS vol.39 p.415
m* K. Hayashi, X. P. Zhao, E. Benevolenskaya, and Y. Liu, "MHD Simulation of The Solar Corona Using The Synchronic Frame Format of The Solar Magnetic Field and The EIT-based Temperature Map", AAS 210th meeting (#91.06), 27 - 31 May 2007 / Honolulu, HI ; BAAS vol.38 p.205
2006
m* Keiji Hayashi, Xue Pu Zhao, and Elena Benevolenskaya, "MHD Simulation of the Global Solar Corona Using the Synoptic Frame of the Photospheric Magnetic Field and Coronal-Base Temperature", AGU fall meeting 2006 (#SH23B-0351), 11 - 15 December 2006 / San Francisco, CA
W* Keiji Hayashi, "MHD simulation of solar corona and solar wind and the sub-Alfvénic boundary treatments to utilize the measurement data", CAWSES International Workshop on Space Weather Modeling (CSWM), 14 - 17 November 2006, Yokohama, Japan ; meeting website
J* K. Hayashi, X. P. Zhao, and Y. Liu, "MHD simulation of two successive interplanetary disturbances driven by Cone-model parameters in IPS-based solar wind", (2006) GRL, vol.33(20), L20103, doi:10.1029/2006GL027408 ; link to ADS
m* K. Hayashi, X. P. Zhao, and E. Benevolenskaya, "The MHD simulation of the solar corona using the synoptic frame map of the solar photospheric magnetic field and the SOHO/EIT coronal temperature map", 36th COSPAR Scientific Assembly (#PSW1-0048-06, PSW1-1MO1P-0150, IT2-0150), 16 - 23 July 2006 / Beijing, P.R.China
m* K. Hayashi, X. P. Zhao, and Y. Liu, "The plasma parameters in the shrinking magnetic flux tubes in the solar corona", AGU 2006 Joint Assembly (#SH43A-03), 23 - 26 May 2006 / Baltimore, MD
J Y. Liu and K. Hayashi, "The 2003 October-November Fast Halo Coronal Mass Ejections and the Large-Scale Magnetic Field Structures", (2006) ApJ, vol.640(2), 1135 - 1141, doi:10.1086/500290 ; link to ADS
PW* Keiji Hayashi, "Three-dimensional time-dependent MHD simulation model of the solar corona and solar wind", Proceedings of the International Living With a Star (ILWS) Workshop (held in Goa, India on 19 - 24 February 2006 ; edited by N. Gopalswamy, and A. Bhattacharyya) ISBN: 81-87099-40-2, p.124 ; link to ADS
w* Keiji Hayashi, "MHD simulation of the solar corona using the SOHO/MDI magnetograph data", SDO AIA-HMI Science Teams Meeting, 12 - 17 February 2006 / Monterey, CA
J* Keiji Hayashi, Elena Benevolenskaya, J. Todd Hoeksema, Yang Liu, and Xue Pu Zhao, "Three-Dimensional Magnetohydrodynamic Simulation of a Global Solar Corona Using a Temperature Distribution Map Obtained from SOHO EIT Measurements", (2006) ApJ Letters, vol.636, 165 - 168, doi:10.1086/500127 ; link to ADS
2005
J* Keiji Hayashi, "Magnetohydrodynamic Simulations of the Solar Corona and Solar Wind Using a Boundary Treatment to Limit Solar Wind Mass Flux", (2005) the Astrophysical Journal (ApJ) Supplement Series, vol.161, 480 - 494, doi:10.1086/491791 ; link to ADS
m* Keiji Hayashi, Yang Liu, and Xue Pu Zhao, "MHD Simulation of the Global Solar Corona Using the Synoptic Frame of the Photospheric Magnetic Field", AGU fall meeting 2005 (#SH11A-0246), 5 - 9 December 2005 / San Francisco, CA
m* Keiji Hayashi, X. P. Zhao, and B. Poduval, "The MHD simulation on the coronal plasma in radially shrinking open magnetic flux tubes", AAS/AGU Joint Assembly (#SH13A-06), 23 - 27 May 2005 / New Orleans, LA (abstract)
2004
m* Keiji Hayashi, Yang Liu, and Xue Pu Zhao, "Time-Dependent Three-Dimensional MHD Simulation of Solar Corona and Solar Wind at Solar Minimum Phase", AGU fall meeting 2004 (#SH13A-1156), 13 - 17 December 2004 / San Francisco, CA
M* K. Hayashi, Y. Liu, and X. P. Zhao, "MHD Simulation Model of the Interplanetary Disturbance Propagation Following the Flare of 2002 April 17" (invited), American Astronomical Society (AAS) 204th meeting (#62.07), 31 May - 3 June 2004 / Denver, CO ; BAAS (Bulletin of the American Astronomical Society) vol.36, p.783
w* K. Hayashi, "MHD simulation of solar wind using solar photospheric magnetic field data", Living With a Star (LWS) Workshop, 22 - 26 March 2004 / Boulder, CO
W* K. Hayashi, "Inversion of LOFAR Faraday Rotation Measurement, for solar coronal magnetic field", LOFAR Space Weather Workshop, 27 - 28 Jan. 2004 / San Diego, CA
J M. Kojima, A. R. Breen, K. Fujiki, K. Hayashi, T. Ohmi, and M. Tokumaru, "Fast Solar Wind after the Rapid Acceleration", (2004) JGR, vol.109(A4), A04103, doi:10.1029/2003JA010247 ; link to ADS
2003
m* K. Hayashi, Y. Liu, and X. Zhao, "Solar Corona Obtained with MHD Simulation Using Various Boundary Treatments Based on Characteristic Projection Method", AGU fall meeting 2003 (#SH42B-0524), 8 - 12 December 2003 / San Francisco, CA (abstract)
m M. Hirano, M. Kojima, M. Tokumaru, K. Fujiki, T. Ohmi, M. Yamashita, K. Hakamada, and K. Hayashi, "The Relation Between the Solar Wind Velocity and the Magnetic Conditions of Coronal Holes", AGU fall meeting 2003 (#SH21B-0164), 8 - 12 December 2003 / San Francisco, CA
J T. Ohmi, M. Kojima, K. Fujiki, M. Tokumaru, K. Hayashi, and K. Hakamada, "Polar low-speed solar wind reappeared at the solar activity maximum of cycle 23", (2003) Geophysical Research Letters (GRL), vol.30(7), L1409, doi:10.1029/2002GL016347 ; link to ADS
J K. Fujiki, M. Kojima, M. Tokumaru, T. Ohmi, A. Yokobe, K. Hayashi, D. J. McComas, and H. A. Elliott, "How did the solar wind structure change around the solar maximum? ---- From interplanetary scintillation observation", (2003) Annales Geophysichae, vol.21(6), 1257 - 1261 ; link to ADS
P K. Fujiki, M. Kojima, M. Tokumaru, T. Ohmi, A. Yokobe, K. Hayashi, D. J. McComas, and H. A. Elliott, "Solar wind velocity structure around the solar maximum observed by interplanetary scintillation", (2003) Solar Wind Ten, AIP Conference Proceedings, vol.679, 226 - 229, doi:10.1063/1.1618583 ; link to ADS
P* Keiji Hayashi, Ken'ichi Fujiki, Masayoshi Kojima, and Munetoshi Tokumaru, "Basic Results of MHD Tomography Analysis Method for IPS Observation", (2003) Solar Wind Ten, AIP Conference Proceedings, vol.679, 144 - 147, doi:10.1063/1.1618562 ; link to ADS
P K. Fujiki, M. Kojima, M. Tokumaru, T. Ohmi, A. Yokobe, and K. Hayashi, "Solar Cycle Dependence of High-Latitude Solar Wind", (2003) Solar Wind Ten, AIP Conference Proceedings, vol.679, 141 - 143, doi:10.1063/1.1618561 ; link to ADS
P Tomoaki Ohmi, Masayoshi Kojima, Keiji Hayashi, Atushi Yokobe, Munetoshi Tokumaru, Ken'ichi Fujiki, and Kazuyuki Hakamada, "Evidences for Low-speed Streams from Small Coronal Hole", (2003) Solar Wind Ten: Proceedings of the Tenth International Solar Wind Conference (held in Pisa, Italy on 17 - 31 June 2002 ; edited by M. Velli, R. Bruno and F. Malara), American Institute of Physics (AIP) Conference Proceedings, vol.679, 137 - 140, American Institute of Physics, doi:10.1063/1.1618560 ; link to ADS
P M. Kojima, M. Tokumaru, K. Fujiki, Y. Ishida, T. Ohmi, K. Hayashi, and M. Yamashita, "Solar wind imaging facility (SWIFT) for space weather research", (2003) Innovative Telescopes and Instrumentation for Solar Astrophysics (edited by Stephen L. Keil and Sergey V. Avakyan), Proceedings of the SPIE (International Society for Optics and Photonics), vol.4853, 121 - 128
M M. Kojima, V. J. Bernard, T. Ohmi, P. Hick, K. Hayashi, M. Tokumaru, and K. Fujiki,, "The 3d Solar Wind Over the Solar Cycle Observed by IPS", The Sun and the Heliosphere as an Integrated System, 25th meeting of the International Astronomical Union (IAU) Joint Discussion 7, July 2003 / Sydney, Australia
J* Keiji Hayashi, Masayoshi Kojima, Munetoshi Tokumaru, and Ken'ichi Fujiki, "MHD Tomography Method Using Interplanetary Scintillation Measurement", (2003) the Journal of Geophysical Research (JGR), vol.108(A3), 1102 - 1115, doi:10.1029/2002JA009567 ; link to ADS
∼ 2002 : selected publications/presentations
M* Keiji Hayashi, "Heliospheric MHD simulations using IPS solar wind measurement data (originally given in Japanese)", Astronomical Society of Japan fall meeting, 7 - 10 October 2002 / Miyazaki, Japan
W* Keiji Hayashi, "Global Structure of Solar Wind Derived from IPS observational data and MHD tomography analysis", The Second Japan-Korea-China Joint Workshop on Space Weather (#O-03), 2 - 4 October 2002 / Rikubetsu, Hokkaido, Japan ; meeting website
m* Keiji Hayashi, Masayoshi Kojima, Munetoshi Tokumaru, and Ken'ichi Fujiki, "MHD tomography Using IPS observation", American Geophysical Union (AGU) fall meeting 2001 (#SH31A-0697), 10 - 14 December 2001 / San Francisco, CA (abstract)
PW M. Kojima, M. Tokumaru, K. Fujiki, K. Hayashi, A. Yokobe, and T. Ohmi, "Tomographic Observation of Heliosphere using UHF IPS Antennas", Proceedings of 2001 Asia-Pacific Radio Science Conference (AP-RASC '01) (held in Tokyo, Japan on 1 - 4 August 2001), p.240
M* Keiji Hayashi, Masayoshi Kojima, Munetoshi Tokumaru, and Ken'ichi Fujiki, "The three-dimensional structure of the solar wind determined by combining the MHD simulation and the IPS observation data", the 2001 Japan Geoscience Union Meeting, June 2001 / Tokyo, Japan (abstract)
m* K. Hayashi and H. Yoshimura, "The speed of the solar wind and the solar surface and coronal magnetic field", 33rd Committee on Space Research (COSPAR) Scientific Assembly (#PSW1-0073), 16 - 23 July 2000 / Warsaw, Poland (abstract)
P* K. Hayashi and H. Yoshimura, "Differential Rotation of Coronal Holes", (1995) Proceedings of Yohkoh (Solar-A) and Solar-B Kick-off Meeting, Appendix of Proc. Japan-German Workshop on Solar Physics (held at National Astronomical Observatory of Japan on 22 - 24 Feb. 1994), 249 - 251
P* K. Hayashi and H. Yoshimura, "Differential Rotation of Solar Coronal Holes", (1994) Proceedings of Eighth International Symposium on Solar Terrestrial Physics Dedicated to Solar Terrestrial Energy Program (STEP) (held in Sendai, Japan on 5 - 10 June 1994 ; edited by H. Oya and G. Rostoker), p.17, Scientific Committee on Solar Terrestrial Physics (SCOSTEP)
P H. Yoshimura, T. Takahashi and K. Hayashi, "Evolution of Global Pattern of Solar Soft X-Ray Observed by Spacecraft Yohkoh : Co-existence of Zonal and Sectorial Structures", (1994) Proceedings of Eighth International Symposium on Solar Terrestrial Physics Dedicated to Solar Terrestrial Energy Program (STEP) (held in Sendai, Japan on 5 - 10 June 1994 ; edited by H. Oya and G. Rostoker), p.33, Scientific Committee on Solar Terrestrial Physics (SCOSTEP)
P T. Takahashi, S. Tsuneta, K. Hayashi, and H. Yoshimura, "X-Ray Active Nest", (1994) X-ray solar physics from Yohkoh. Frontiers Science Series, Proceedings of the International Symposium on the YohKoh Scientific Results (held in Sagamihara, Kanagawa, Japan on 23 - 25 Feb. 1993 ; edited by Yutaka Uchida, Tetsuya Watanabe, Kazunari Shibata, and Hugh S. Hudson), p.293, Universal Academy Press, Tokyo, Japan. ; link to Astrophysics Data System (ADS) Abstract Service
J   : article in peer-reviewed journal
P/p : article in conference proceedings with/without refereeing
M/m : oral/poster presentation at society meeting
W/w : oral/poster presentation at conference or workshop (other than society meeting)
*   : appearing as the first author
some of my abstracts to meetings/conferences/workshops


K. Hayashi