My portrait in 2022.

Masafumi Imai

Research Scientist

Department of Space Physics

Institute of Atmospheric Physics

The Czech Academy of Sciences

Bocni II 1401, 14100 Prague 4, Czechia



Presentations in Research

  1. Imai, M., G. Fischer, U. Taubenschuss, D. Pisa, O. Santolik, I. Kolmasova (2024), Reinvestigation of the polarization of Saturn electrostatic discharges during the Voyager era (Poster), American Geophysical Union Fall Meeting, SM53B-2891, Washington D.C., December 9-13.
  2. Imai, M., W. S. Kurth, I. Kolmasova, O. Santolik, M. H. Wong, S. T. Shannon, G. B. Hospodarsky, S. J. Bolton, and S. M. Levin (2023c), Statistical study of Jupiter dispersed pulses observed by Juno (Oral), SGEPSS Fall Meeting 2023, Sendai, Japan, September 23-27.
  3. Imai, M., K. Imai, N. Hirakoso, M. Nishio, T. Takada, K. Kitamura, J. Nakaya, Y. Murakami, M. Tokumitsu, K. Fukai, and KOSEN-1 team (2023b), One-Year Operation of Technology Demonstration CubeSat KOSEN-1 (Oral), Join Symposium: 34th ISTS & 12th NSAT, Kurume, Japan, June 3-9.
  4. Imai, M. (2023a), Probing Jupiter's auroras and magnetosphere with Juno (Invited), Symposium on Planetary Sciences 2023, Sendai, Japan, February 20-22.
  5. Imai, M., W. S. Kurth, I. Kolmasova, O. Santolik, M. H. Wong, S. T. Shannon, G. B. Hospodarsky, S. J. Bolton, and S. M. Levin (2022d), Global distribution of Jovian ionospheric holes associated with Jupiter lightning (Oral), SGEPSS Fall Meeting 2022, Sagamihara, Japan, November 3-7.
  6. Imai, M., S. Norikane, A. Kubota, H. Okawa, S. Miyazaki, K. Kawakami, and M. Tokumitsu (2022c), Development of Mission Instrument Control and Assisted Components onboard the KOSEN-2 CubeSat (Oral), The 66th Space Sciences and Technology Conference, 1N01, Kumamoto, Japan, November 1-4.
  7. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, and J. E. P. Connerney (2022b), High-Resolution Observations of Jupiter's Auroral Radio Emissions from Juno (Invited), Planetary, Solar, Radio and Heliospheric Radio Emissions (PRE) IX Conference, Dublin, Ireland, September 26-28.
  8. Imai, M., K. Imai, N. Hirakoso, Y. Ito, T. Sugawara, S. Suzuki, M. Nishio, T. Takada, K. Kitamura, J. Nakaya, Y. Murakami, M. Tokumitsu, M. Wakabayashi, and KOSEN-1 Team (2022a), Jupiter's decametric radio common observation campaign from KOSEN-1 and ground-based radio telescopes (Oral), Japan Geoscience Union Meeting 2022, Hybrid, May 22-27.
  9. Imai, M., K. Imai, N. Hirakoso, Y. Ito, T. Sugawara, S. Suzuki, M. Nishio, T. Takada, K. Kitamura, J. Nakaya, Y. Murakami, M. Tokumitsu, T.E. Clarke, C.A. Higgins, J.F. Helmboldt, and KOSEN-1 Team (2021c), KOSEN-1 Jupiter radio observation campaign with ground-based radio telescopes (Oral), SGEPSS Fall Meeting 2021, Online, October 31-November 4.
  10. Imai, M., K. Imai, N. Hirakoso, M. Nishio, T. Takada, K. Kitamura, J. Nakaya, Y. Murakami, M. Tokumitsu, and M. Wakabayashi (2021b), Planetary Radio Observation CubeSat: Current Step on Earth to Next Step on Moon (Oral), ISAS Planetary Exploration Workshop 2021, Online, September 21-24.
  11. Imai, M., W. S. Kurth, I. Kolmasova, O. Santolik, M. H. Wong, S. T. Brown, G. B. Hospodarsky, T. Guillot, S. J. Bolton, and S. M. Levin (2021a), New understanding on Jupiter's lightning in the atmosphere as revealed by Juno (Invited), Japan Geoscience Union Meeting 2021, Online, May 30-June 6.
  12. Imai, M., M. H. Wong, I. Kolmasova, S. T. Brown, O. Santolik, W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, and S. M. Levin (2020b), High-Spatiotemporal Resolution Observations of Jupiter Lightning-Induced Radio Pulses Associated With Sferics and Thunderstorms (Oral), SGEPSS Fall Meeting 2020, Online, November 1-4.
  13. Imai, M., T. Soga, K. Imai, and C. A. Higgins (2020a), A single-baseline analysis of Jupiter's decametric radiation with LWA-1 and LWA-SV, "Technology for Next Generation Space-Earth Environmental Radio Science", a workshop by ISEE, Nagoya University, Online, August 26-27.
  14. Imai, M., S. J. Bolton, G. Clark, J. E. P. Connerney, R. W. Ebert, S. S. Elliott, D. J. Gershman, G. B. Hospodarsky, W. S. Kurth, P. Louarn, C. K. Louis, Y. M. Martos, A. H. Sulaiman, and J. R. Szalay (2019g), New understanding on wave-particle interactions over Jupiter's polar auroras as revealed by Juno (Poster), American Geophysical Union Fall Meeting, P41A-3395, San Francisco, California, December 9-13.
  15. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. S. Elliott, A. H. Sulaiman, D. A. Gurnett, I. Kolmasova, O. Santolik, P. Louarn, C. K. Louis, P. Zarka, S. J. Bolton, and J. E. P. Connerney (2019f), Observations of radio and plasma waves at Jupiter from Juno Waves investigation (Oral), The Tenth Moscow Solar System Symposium, Moscow, Russia, October 7-11.
  16. Imai, M., I. Kolmasova, O. Santolik, W. S. Kurth, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, and J. E. P. Connerney (2019e), Global distribution of Jovian ionospheric holes estimated from Jupiter dispersed pulses (Poster), EPSC-DPS Joint Meeting 2019, Geneva, Switzerland, September 15-20.
  17. Imai, M., I. Kolmasova, O. Santolik, W. S. Kurth, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, and J. E. P. Connerney (2019d), Observing low-frequency electromagnetic waves related to Jovian lightning with the Juno Waves instrument (Oral), Asia Oceania Geoscience Society 16th Annual Meeting, Singapore, July 28-August 2.
  18. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, and J. E. P. Connerney (2019c), High-Spatiotemporal Resolution Observations of Jupiter's Auroral Radiation from Juno (Oral), Magnetospheres of the Outer Planets Conference, Sendai, Japan, June 3-7.
  19. Imai, M., W. S. Kurth, S. J. Bolton, and J. E. P. Connerney (2019b), Latitudinal beaming of Jupiter's decametric and hectometeric radiation from the Juno Waves investigation (Oral), European Geosciences Union General Assembly 2019, Vienna, Austria, April 7-12.
  20. Imai, M., W. S. Kurth, G. B. Hospodarsky, Y. M. Martos, P. Louarn, S. J. Bolton, J. E. P. Connerney, C. K. Louis, L. Lamy, P. Zarka, T. E. Clarke, C. A. Higgins, and B. Cecconi (2019a), Observing Jupiter's auroral radio sources and emissions with Juno (Invited), USNC-URSI National Radio Science Meeting, J3-1, Boulder, Colorado, January 9-12.
  21. Imai, M., I. Kolmasova, S. T. Brown, O. Santolik, W. S. Kurth, M. A. Janssen, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2018i), Observations of Jupiter lightning-induced electromagnetic waves from the Juno Waves investigation (Poster), American Geophysical Union Fall Meeting, P33F-3890, Washington D.C., December 10-14.
  22. Imai, M., O. Santolik, S. T. Brown, I. Kolmasova, W. S. Kurth, M. A. Janssen, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, and S. M. Levin (2018h), Multi-instrument investigation for Jupiter lightning-induced whistler and sferic events using Juno (Oral), The Ninth Moscow Solar System Symposium, Moscow, Russia, October 8-12.
  23. Imai, M., T. K. Greathouse, G. R. Gladstone, W. S. Kurth, C. K. Louis, G. B. Hospodarsky, P. Zarka, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2018g), Jovian broadband kilometric radio sources correlated with the ultraviolet main oval as viewed from Juno (Poster), European Planetary Science Congress 2018, Berlin, Germany, September 16-21.
  24. Imai, M., I. Kolmasova, S. T. Brown, O. Santolik, W. S. Kurth, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2018f), Jupiter lightning-induced electromagnetic waves from the Juno Waves investigation (Invited), 42nd COSPAR Scientific Assembly 2018, Pasadena, California, July 14-22.
  25. Imai, M., W. S. Kurth, B. Bonfond, D. Grodent, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, S. M. Levin, A. Lecacheux, L. Lamy, P. Zarka, T. E. Clarke, C. A. Higgins, and B. Cecconi (2018e), Stereoscopic observations of Jovian decametric radio arcs associated with ultraviolet auroras (Poster), Magnetospheres of the Outer Planets Conference, Boulder, Colorado, July 8-13.
  26. Imai, M., I. Kolmasova, O. Santolik, W. S. Kurth, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2018d), New detections of Jupiter dispersed pulses during Juno perijoves (Oral), Asia Oceania Geoscience Society 15th Annual Meeting, Honolulu, Hawaii, June 3-8.
  27. Imai, M., G. R. Gladstone, W. S. Kurth, T. K. Greathouse, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2018c), Jupiter's auroras in radio and ultraviolet wavelengths as seen from Juno (Oral), European Geosciences Union General Assembly 2018, Vienna, Austria, April 8-13.
  28. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, S. M. Levin, A. Lecacheux, L. Lamy, P. Zarka, T. E. Clarke, and C. A. Higgins (2018b), Stereoscopic observations of Jupiter's decametric radio bursts with Juno, Cassini, STEREO A, WIND and Earth-based radio observatories (Invited), USNC-URSI National Radio Science Meeting, J6-8, Boulder, Colorado, January 4-7.
  29. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2018a), Juno direction-finding measurements of Jupiter's narrowband kilometric radiation (Oral), USNC-URSI National Radio Science Meeting, H2-7, Boulder, Colorado, January 4-7.
  30. Imai, M., W. S. Kurth, G. B. Hospodarsky, B. Bonfond, D. Grodent, G. R. Glandstone, P. Louarn, S. J. Bolton, J. E. P. Connerney, S. M. Levin, A. Lecacheux, L. Lamy, P. Zarka, T. E. Clarke, and C. A. Higgins (2017f), Probing Jupiter's auroral radio sources with Juno (Invited), Science at Low Frequencies IV, Sydney, Australia, December 13-15. [Digest slides]
  31. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, S. M. Levin, A. Lecacheux, L. Lamy, P. Zarka, T. E. Clarke, and C. A. Higgins (2017e), Jovian decametric radiation seen from Juno, Cassini, STEREO A, WIND, and Earth-based radio observatories (Poster), European Planetary Science Congress 2017, Riga, Latvia, September 17-22.
  32. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2017d), Jovian Low-Frequency Radio Source Probed Using Juno Waves Direction-Finding Technique (Poster), Asia Oceania Geoscience Society 14th Annual Meeting, PS08-A008, Singapore, August 6-11.
  33. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, and S. M. Levin (2017c), Statistical beaming properties of Jupiter's decametric radiation using the Juno Waves instrument (Oral), Magnetospheres of the Outer Planets Conference, Uppsala, Sweden, June 12-16.
  34. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, S. M. Levin, T. E. Clarke, and C. A. Higgins (2017b), Jupiter's Decameter Radiation as Viewed from Juno, Cassini, WIND, STEREO A, and Earth-Based Radio Observatories (Poster), European Geosciences Union General Assembly 2017, X4.377, Vienna, Austria, April 23-28.
  35. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, S. M. Levin, L. Lamy, T. E. Clarke, and C. A. Higgins (2017a), Jupiter's Decametric Radiation Observed by Juno and Earth-Based Radio Observatories (Oral), USNC-URSI National Radio Science Meeting, H5-4, Boulder, Colorado, January 4-7.
  36. Imai, M., W. S. Kurth, G. B. Hospodarsky, S. J. Bolton, J. E. P. Connerney, S. M. Levin, P. Zarka, B. Cecconi, A. Lecacheux, and L. Lamy (2016d), Observations of Jupiter's Low-Frequency Radio Emissions from the Juno Waves Instrument in Collaboration with the Earth-Based Radio Telescopes (Poster), American Geophysical Union Fall Meeting, P33C-2148, San Francisco, California, December 12-16.
  37. Imai, M., W. S. Kurth, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, J. E. P. Connerney, S. M. Levin, A. Lecacheux, L. Lamy, P. Zarka, and B. Cecconi (2016c), Jupiter's Low-Frequency Radio Emissions as Viewed from Juno and the Earth-Based Radio Observatories (Oral), Science at Low Frequencies III, Pasadena, California, December 7-9.
  38. Imai, M., A. Lecacheux, T. E. Clarke, C. A. Higgins, M. Panchenko, W. S. Kurth, A. I. Brazhenko, A. V. Frantsuzenko, V. V. Zakharenko, A. A. Konovalenko, V. V. Koshovyy, and O. N. Ivantyshin (2016b), Jupiter's Decametric Radio Common Observation Campaign from the LWA1, NDA, and Ukrainian Radio Telescopes from January to August 2016 (Poster), Science at Low Frequencies III, Pasadena, California, December 7-9.
  39. Imai, M., W. S. Kurth, G. B. Hospodarsky, D. A. Gurnett, S. J. Bolton, J. E. P. Connerney, S. M. Levin, P. Zarka, B. Cecconi, A. Lecacheux, and L. Lamy (2016a), Analysis of Jovian low-frequency radio emissions based on the Juno Waves data and stereoscopic observations with Juno and Earth-based radio telescopes (Oral), International Workshop on Planetary, Solar, and Heliospheric Radio Emissions VIII, Seggauberg, Austria, September 25-27.
  40. Imai, M., A. Lecacheux, C. A. Higgins, T. E. Clarke, M. Panchenko, A. I. Brazhenko, A. V. Frantsuzenko, A. A. Konovalenko, and K. Imai (2015b), Beaming Structures of Jupiter's Decametric Radiation from LWA1, NDA, and URAN2 Simultaneous Observations (Poster), American Geophysical Union Fall Meeting, SM31C-2506, San Francisco, California, December 14-18.
  41. Imai, M., A. Lecacheux, C. A. Higgins, T. E. Clarke, M. Panchenko, A. I. Brazhenko, A. V. Frantsuzenko, A. A. Konovalenko, and K. Imai (2015a), Jupiter's decametric radio common observation campaign from LWA1, NDA, and URAN-2 in late 2014 and early 2015 (Poster), Magnetospheres of the Outer Planets Conference, Atlanta, Georgia, June 1-5.
  42. Imai, M., and A. Lecacheux (2014), "Enhanced" Ray Tracing Study of the Attenuation Lanes in Jupiter's Hectometric Radio Emission By Using Cassini Jupiter Encounter Data (Poster), American Geophysical Union Fall Meeting, SM51E-4285, San Francisco, California, December 15-19.
  43. Imai, M. (2013b), Ray tracing survey on modulation lanes associated with Jupiter's decametric radiation (Poster), 11th International School/Symposium for Space Simulations, National Central University, Taiwan, July 21-28.
  44. Imai, M., C. A. Higgins, A. Lecacheux, K. Imai, and J. R. Thieman (2013a), Ray Tracing Study on Attenuation Bands within Jovian Hectometric Radiation (Poster), Magnetospheres of the Outer Planets Conference, Athens, Greece, July 8-12.
  45. Imai, M., A. Lecacheux, K. Imai, C. A. Higgins, and J. R. Thieman (2011), Observations of Jupiter's Decametric and Hectometric Radio Emissions by Cassini/RPWS and Voyager/PRA (Invited), The XXV IUGG General Assembly Earth on the Edge: Science for a Sustainable Planet, #1555, Melbourne, Australia, June 28-July 7.
  46. Imai, M., K. Imai, C. A. Higgins, and J. R. Thieman (2010), Jupiter's decametric and hectometric radio emissions observed by Cassini RPWS and Voyager PRA (Oral), International Workshop on Planetary, Solar, and Heliospheric Radio Emissions VII, Graz, Austria, September 15-17.
  47. Imai, M., A. Lecacheux, and K. Imai (2009), Polarization Analysis of Jupiter's decametric and hectometric radio emissions from Cassini (Poster), Magnetospheres of the Outer Planets Conference, J10, Cologne, Germany, July 27-31.
  48. Imai, M., K. Imai, C. A. Higgins, and J. R. Thieman (2008), On the Relationship of Jupiter's Non-Io-DAM Emissions and Aurora Phenomena (Poster), American Geophysical Union Fall Meeting, SM41B-1668, San Francisco, California, December 14-19.



Presentations in Education

  1. Imai, M., M. Wakabayashi, K. Imai, M. Tokumitsu, J. Nakaya, Y. Murakami, N. Hirakoso, T. Takada, and K. Shimada (2022), Enhancing KOSEN Education in Space Engineering through the Development of KOSEN-1 and KOSEN-2 CubeSats (Oral), The 15th International Symposium on Advances in Technology Education 2022, Online, September 20-23.
  2. Imai, M., and KOSEN-1 team (2021), Enhancing KOSEN Education in Planetary Radio Science through the Development of KOSEN-1 CubeSat (Oral), The 4th NIT-NUU Bilateral Academic Conference, Online, September 2.



Invited Seminars