Koji Kawabata

Last Updated :2025/05/09

Affiliations, Positions
Hiroshima Astrophysical Science Center, Professor
Web Site
http://home.hiroshima-u.ac.jp/kawabtkj/index-e.html
E-mail
kawabtkjhiroshima-u.ac.jp
Other Contact Details
Hiroshima Astrophysical Science Center, Hiroshima University 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan, Japan
TEL : (+81)82-424-7371 FAX : (+81)82-424-5765
Self-introduction
I was born and grew up in Iwate Prefecture, in northern part of Japanese main land Honshu. I majored in astronomy in Tohoku University. I study the explosions of stars and evolution of the interstellar matter. I am engaged in maintenance of 1.5-m optical/near-infrared telescope `Kanata' of Hiroshima University. I also work for developing an instrument for astronomical observation, especially for polarimetry.

Basic Information

Major Professional Backgrounds

  • 2001/01/01, 2003/10/31, National Astronomical Observatory, Optical and Infrared Astronomy Division, COE Postdoctoral Fellow
  • 1999/04/01, 2000/12/31, National Astronomical Observatory, Optical and Infrared Astronomy Division, Postdoctoral Fellow
  • 2003/11/01, 2004/03/31, Hiroshima University, Graduate School of Science, Research Associate
  • 2004/04/01, 2007/03/31, Hiroshima University, Hiroshima Astrophysical Science Center, Research Associate
  • 2007/04/01, 2009/03/31, Hiroshima University, Hiroshima Astrophysical Science Center, Assistant Professor
  • 2009/04/01, 2017/03/31, Hiroshima University, Hiroshima Astrophysical Science Center, Associate Professor
  • 2017/04/01, Hiroshima University, Hiroshima Astrophysical Science Center, Professor

Educational Backgrounds

  • Tohoku University, Graduate School of Science, Astronomy, Japan, 1996/04, 1999/03
  • TOHOKU UNIVERSITY, Faculty of Science, Astronomical Institute, Japan, 1990/04, 1994/03

Academic Degrees

  • Ph.D. (Science), TOHOKU UNIVERSITY
  • Master of Science, TOHOKU UNIVERSITY

Educational Activity

  • [Bachelor Degree Program] School of Science : Physics : Physics
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program

In Charge of Primary Major Programs

  • Physics

Research Fields

  • Mathematical and physical sciences;Astronomy;Astronomy

Research Keywords

  • Optical and Infrared Astronomy
  • Supernovae and gamma-ray bursts
  • Gravitational wave source
  • circumstellar medium
  • polarization
  • instrumentation

Affiliated Academic Societies

  • Astronomical Society of Japan, 1995
  • International Astronomical Union, 2003
    Related URL
  • Japanese Society for Education and Popularization of Astronomy, 2005

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 1Term, Astronomy
  2. 2025, Undergraduate Education, 3Term, Teaching Contents of Earth Science III
  3. 2025, Undergraduate Education, 4Term, Advanced Physics
  4. 2025, Undergraduate Education, First Semester, Special Study for Graduation A
  5. 2025, Undergraduate Education, Second Semester, Special Study for Graduation B
  6. 2025, Undergraduate Education, Second Semester, Special Lectures in Physics (Galactic Astronomy)
  7. 2025, Graduate Education (Master's Program) , 2Term, Observational Astronomy in Optical and Near-Infrared Region
  8. 2025, Graduate Education (Master's Program) , Second Semester, Special Lecture in Physics A
  9. 2025, Graduate Education (Master's Program) , First Semester, Exercise in Physics I
  10. 2025, Graduate Education (Master's Program) , Second Semester, Exercise in Physics II
  11. 2025, Graduate Education (Master's Program) , First Semester, Special Exsecise in Physics A
  12. 2025, Graduate Education (Master's Program) , Second Semester, Special Exsecise in Physics B
  13. 2025, Graduate Education (Master's Program) , Year, Special Research in Physics
  14. 2025, Graduate Education (Doctoral Program) , Year, Special Research in Physics

Research Activities

Academic Papers

  1. X-Ray and Multiwavelength Polarization of Mrk 501 from 2022 to 2023, ASTROPHYSICAL JOURNAL, 974(1), 20241010
    Link to Paper Search Results by DOI
  2. The JCMT BISTRO Survey: The Magnetic Fields of the IC 348 Star-forming Region, ASTROPHYSICAL JOURNAL, 977(1), 20241201
    Link to Paper Search Results by DOI
  3. New evidence supporting past dust ejections from active asteroid (4015) Wilson-Harrington, ASTRONOMY & ASTROPHYSICS, 690, 20241008
    Link to Paper Search Results by DOI
  4. MASTER OT J030227.28+191754.5: An unprecedentedly energetic dwarf nova outburst, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 76(6), 1228-1245, 20241009
    Link to Paper Search Results by DOI
  5. First characterization of the emission behavior of Mrk 421 from radio to very high-energy gamma rays with simultaneous X-ray polarization measurements, ASTRONOMY & ASTROPHYSICS, 684, 20240411
    Link to Paper Search Results by DOI
  6. Unravelling the Asphericities in the Explosion and Multifaceted Circumstellar Matter of SN 2023ixf, ASTROPHYSICAL JOURNAL, 975(1), 20241101
    Link to Paper Search Results by DOI
  7. Observations of Low and Intermediate Spectral Peak Blazars with the Imaging X-Ray Polarimetry Explorer, ASTROPHYSICAL JOURNAL, 972(1), 20240901
    Link to Paper Search Results by DOI
  8. IXPE observation of PKS 2155-304 reveals the most highly polarized blazar, ASTRONOMY & ASTROPHYSICS, 689, 20240906
    Link to Paper Search Results by DOI
  9. X-ray evaluation of the CMOS image sensor IU233N5-Z and readout the scintillation light, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1066, 202409
    Link to Paper Search Results by DOI
  10. Interstellar Polarization Survey. IV. Characterizing the Magnetic Field Strength and Turbulent Dispersion Using Optical Starlight Polarization in the Diffuse Interstellar Medium, ASTRONOMICAL JOURNAL, 168(1), 20240701
    Link to Paper Search Results by DOI
  11. Gravitational wave physics and astronomy in the nascent era, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2023(10), 202310
    Link to Paper Search Results by DOI
  12. Insights into the broadband emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements, ASTRONOMY & ASTROPHYSICS, 685, 20240522
    Link to Paper Search Results by DOI
  13. Gravitational wave physics and astronomy in the nascent era, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 202117
    Link to Paper Search Results by DOI
  14. Gamma rays from a reverse shock with turbulent magnetic fields in GRB 180720B, NATURE ASTRONOMY, 8(1), 202401
    Link to Paper Search Results by DOI
  15. Detection of X-Ray Polarization from the Blazar 1ES 1959+650 with the Imaging X-Ray Polarimetry Explorer, ASTROPHYSICAL JOURNAL, 963(1), 20240301
    Link to Paper Search Results by DOI
  16. Magnetic Fields in the Southern Coalsack and Beyond, ASTRONOMICAL JOURNAL, 167(4), 20240401
    Link to Paper Search Results by DOI
  17. Intermediate-luminosity Type IIP SN 2021gmj: a low-energy explosion with signatures of circumstellar material, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 528(3), 4209-4227, 20240207
    Link to Paper Search Results by DOI
  18. Discovery of X-ray polarization angle rotation in the jet from blazar Mrk 421, NATURE ASTRONOMY, 7(10), 1245-1258, 202310
    Link to Paper Search Results by DOI
  19. Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-mass Star-forming Region NGC 2264: Global Properties and Local Magnetogravitational Configurations, ASTROPHYSICAL JOURNAL, 962(2), 20240201
    Link to Paper Search Results by DOI
  20. Magnetic field properties inside the jet of Mrk 421, ASTRONOMY & ASTROPHYSICS, 681, 20240105
    Link to Paper Search Results by DOI
  21. Tomographic Imaging of the Sagittarius Spiral Arm's Magnetic Field Structure, ASTROPHYSICAL JOURNAL, 961(1), 20240101
    Link to Paper Search Results by DOI
  22. Bridging between Type IIb and Ib Supernovae: SN IIb 2022crv with a Very Thin Hydrogen Envelope, ASTROPHYSICAL JOURNAL, 957(2), 20231101
    Link to Paper Search Results by DOI
  23. Far-ultraviolet to Near-infrared Observations of SN 2023ixf: A High-energy Explosion Engulfed in Complex Circumstellar Material, ASTROPHYSICAL JOURNAL LETTERS, 954(1), 20230901
    Link to Paper Search Results by DOI
  24. The broad-lined Type-Ic supernova SN 2022xxf and its extraordinary two-humped light curves I. Signatures of H/He-free interaction in the first four months, ASTRONOMY & ASTROPHYSICS, 678, 20231027
    Link to Paper Search Results by DOI
  25. Spectral type and geometric albedo of (98943) 2001 CC21, the Hayabusa2# mission target, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 525(1), L17-L21, 202310
    Link to Paper Search Results by DOI
  26. SN 2018gj: A Short Plateau Type II Supernova with Persistent Blueshifted Ha Emission, ASTROPHYSICAL JOURNAL, 954(2), 20230901
    Link to Paper Search Results by DOI
  27. Interstellar Polarization Survey. III. Relation between Optical Polarization and Reddening in the General Interstellar Medium, ASTRONOMICAL JOURNAL, 166(1), 20230701
    Link to Paper Search Results by DOI
  28. The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43, ASTROPHYSICAL JOURNAL, 952(1), 20230701
    Link to Paper Search Results by DOI
  29. X-Ray Polarization of BL Lacertae in Outburst, ASTROPHYSICAL JOURNAL LETTERS, 948(2), 20230501
    Link to Paper Search Results by DOI
  30. JCMT BISTRO Observations: Magnetic Field Morphology of Bubbles Associated with NGC 6334, ASTROPHYSICAL JOURNAL, 944(2), 20230201
    Link to Paper Search Results by DOI
  31. Statistical Properties of the Nebular Spectra of 103 Stripped-envelope Core-collapse Supernovae*, ASTROPHYSICAL JOURNAL, 928(2), 20220401
    Link to Paper Search Results by DOI
  32. Interstellar Polarization Survey. II. General Interstellar Medium, ASTRONOMICAL JOURNAL, 165(3), 20230301
    Link to Paper Search Results by DOI
  33. The JCMT BISTRO Survey: A Spiral Magnetic Field in a Hub-filament Structure, Monoceros R2, ASTROPHYSICAL JOURNAL, 941(1), 20221201
    Link to Paper Search Results by DOI
  34. The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament, ASTROPHYSICAL JOURNAL, 941(2), 20221220
    Link to Paper Search Results by DOI
  35. (3200) Phaethon polarimetry in the negative branch: new evidence for the anhydrous nature of the DESTINY (+) target asteroid, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 516(1), L53-L57, 202210
    Link to Paper Search Results by DOI
  36. X-Ray Polarization Observations of BL Lacertae, ASTROPHYSICAL JOURNAL LETTERS, 942(1), 20230101
    Link to Paper Search Results by DOI
  37. The microvariability and wavelength dependence of polarization degree/angle of BL Lacertae in the outburst 2020 to 2021, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75(1), 1-13, 20230206
    Link to Paper Search Results by DOI
  38. Multi-chord observation of stellar occultation by the near-Earth asteroid (3200) Phaethon on 2021 October 3 (UTC) with very high accuracy, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75(1), 153-168, 20230206
    Link to Paper Search Results by DOI
  39. SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium (II). The Properties of the CSM from Polarimetry and Light-curve Modeling, ASTROPHYSICAL JOURNAL, 944(2), 20230201
    Link to Paper Search Results by DOI
  40. SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium. I. The Nature of Type IIn/Ia-CSM SNe from Photometry and Spectroscopy, ASTROPHYSICAL JOURNAL, 944(2), 20230201
    Link to Paper Search Results by DOI
  41. Narrow Fe-K alpha Reverberation Mapping Unveils the Deactivated Broad-line Region in a Changing-look Active Galactic Nucleus, ASTROPHYSICAL JOURNAL, 943(1), 20230101
    Link to Paper Search Results by DOI
  42. Optical and near-infrared photometric and polarimetric monitoring at flaring state of BL Lacertae in 2020-2021, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 74(5), 1041-1048, 20221003
    Link to Paper Search Results by DOI
  43. A global look into the world of interacting supernovae, JOURNAL OF ASTROPHYSICS AND ASTRONOMY, 43(2), 20220816
    Link to Paper Search Results by DOI
  44. Evolution of a Peculiar Type Ibn Supernova SN 2019wep, ASTROPHYSICAL JOURNAL, 930(2), 20220501
    Link to Paper Search Results by DOI
  45. Characterisations of the HinOTORI telescope with a three-color imager at Ali Observatory in Western Tibet, JOURNAL OF INSTRUMENTATION, 17(1), 202201
    Link to Paper Search Results by DOI
  46. B-fields in Star-forming Region Observations (BISTRO): Magnetic Fields in the Filamentary Structures of Serpens Main, ASTROPHYSICAL JOURNAL, 926(2), 20220201
    Link to Paper Search Results by DOI
  47. Low- and medium-dispersion spectropolarimetry of nova V475 Scuti (nova scuti 2003): Discovery of an asymmetric high-velocity wind in a moderately fast nova, ASTRONOMICAL JOURNAL, 132(1), 433-442, 200607
    Link to Paper Search Results by DOI
  48. SN 2005cs in M51 - I. The first month of evolution of a subluminous SNII plateau, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 370(4), 1752-1762, 20060821
    Link to Paper Search Results by DOI
  49. SIMULTANEOUS PHOTOMETRIC AND POLARIMETRIC OBSERVATIONS OF ASTEROID 3 JUNO, ASTRONOMICAL JOURNAL, 138(3), 951-955, 200909
    Link to Paper Search Results by DOI
  50. An optical supernova associated with the X-ray flash XRF 060218, NATURE, 442(7106), 1011-1013, 20060831
    Link to Paper Search Results by DOI
  51. Premaximum spectropolarimetry of the type ia SN 2004dt, ASTROPHYSICAL JOURNAL, 653(1), 490-502, 20061210
    Link to Paper Search Results by DOI
  52. Keck and European southern observatory very large telescope view of the symmetry of the ejecta of the XRF/SN 2006aj, ASTROPHYSICAL JOURNAL, 661(2), 892-898, 20070601
    Link to Paper Search Results by DOI
  53. The unique type Ib Supernova 2005bf at nebular phases: A possible birth event of a strongly magnetized neutron star, ASTROPHYSICAL JOURNAL, 666(2), 1069-1082, 20070910
    Link to Paper Search Results by DOI
  54. Testing the external-shock model of gamma-ray bursts using the late-time simultaneous optical and X-ray afterglows, ASTROPHYSICAL JOURNAL, 668(2), L95-L98, 20071020
    Link to Paper Search Results by DOI
  55. Spectropolarimetry of R Coronae Borealis in 1998-2003: Discovery of transient polarization at maximum brightness, ASTRONOMICAL JOURNAL, 134(5), 1877-1889, 200711
    Link to Paper Search Results by DOI
  56. Asphericity in supernova explosions from late-time spectroscopy, SCIENCE, 319(5867), 1220-1223, 20080229
    Link to Paper Search Results by DOI
  57. The aspherical properties of the energetic type Ic SN 2002ap as inferred from its nebular spectra, ASTROPHYSICAL JOURNAL, 670(1), 592-599, 20071120
    Link to Paper Search Results by DOI
  58. The broad-lined type Ic supernova 2003jd, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 383(4), 1485-1500, 20080201
    Link to Paper Search Results by DOI
  59. The evolution of the peculiar Type Ia supernova SN 2005hk over 400 days, ASTROPHYSICAL JOURNAL, 680(1), 580-592, 20080610
    Link to Paper Search Results by DOI
  60. MULTIEPOCH OPTICAL SPECTROPOLARIMETRY OF THREE MICROQUASARS, Cyg X-1, LS 5039, AND LS I+61 degrees 303, ASTRONOMICAL JOURNAL, 137(3), 3509-3519, 200903
    Link to Paper Search Results by DOI
  61. THE PECULIAR TYPE Ib SUPERNOVA 2006jc: A WCO WOLF-RAYET STAR EXPLOSION, ASTROPHYSICAL JOURNAL, 687(2), 1208-1219, 20081110
    Link to Paper Search Results by DOI
  62. SUBARU AND KECK OBSERVATIONS OF THE PECULIAR TYPE IA SUPERNOVA 2006GZ AT LATE PHASES, ASTROPHYSICAL JOURNAL, 690(2), 1745-1752, 20090110
    Link to Paper Search Results by DOI
  63. Linear polarization in forbidden lines of the T Tauri star RY Tauri, ASTRONOMY & ASTROPHYSICS, 499(1), 163-173, 200905
    Link to Paper Search Results by DOI
  64. EXTREMELY LUMINOUS SUPERNOVA 2006gy AT LATE PHASE: DETECTION OF OPTICAL EMISSION FROM SUPERNOVA, ASTROPHYSICAL JOURNAL, 697(1), 747-757, 20090520
    Link to Paper Search Results by DOI
  65. SPECTROPOLARIMETRY OF THE UNIQUE TYPE Ib SUPERNOVA 2005bf: LARGER ASYMMETRY REVEALED BY LATER-PHASE DATA, ASTROPHYSICAL JOURNAL, 699(2), 1119-1124, 20090710
    Link to Paper Search Results by DOI
  66. NEBULAR PHASE OBSERVATIONS OF THE TYPE Ib SUPERNOVA 2008D/X-RAY TRANSIENT 080109: SIDE-VIEWED BIPOLAR EXPLOSION, ASTROPHYSICAL JOURNAL, 700(2), 1680-1685, 20090801
    Link to Paper Search Results by DOI
  67. A change in the optical polarization associated with a gamma-ray flare in the blazar 3C 279, NATURE, 463(7283), 919-923, 20100218
    Link to Paper Search Results by DOI
  68. Simultaneous MITSuME g'RCIC monitoring of S5 0716+714, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 399(3), 1357-1366, 20091101
    Link to Paper Search Results by DOI
  69. Tohoku-Hiroshima-Nagoya planetary spectra library: a method for characterizing planets in the visible to near infrared, ASTRONOMY & ASTROPHYSICS, 507(3), 1649-1658, 200912
    Link to Paper Search Results by DOI
  70. EARLY PHASE OBSERVATIONS OF EXTREMELY LUMINOUS TYPE Ia SUPERNOVA 2009dc, ASTROPHYSICAL JOURNAL LETTERS, 707(2), L118-L122, 20091220
    Link to Paper Search Results by DOI
  71. PKS 1502+106: A NEW AND DISTANT GAMMA-RAY BLAZAR IN OUTBURST DISCOVERED BY THE FERMI LARGE AREA TELESCOPE, ASTROPHYSICAL JOURNAL, 710(1), 810-827, 20100210
    Link to Paper Search Results by DOI
  72. SPECTROPOLARIMETRY OF EXTREMELY LUMINOUS TYPE Ia SUPERNOVA 2009dc: NEARLY SPHERICAL EXPLOSION OF SUPER-CHANDRASEKHAR MASS WHITE DWARF, ASTROPHYSICAL JOURNAL, 714(2), 1209-1216, 20100510
    Link to Paper Search Results by DOI
  73. ★, A massive star origin for an unusual helium-rich supernova in an elliptical galaxy, NATURE, 465(7296), 326-328, 20100520
    Link to Paper Search Results by DOI
  74. ORBITAL ELEMENTS OF THE SYMBIOTIC STAR Z ANDROMEDAE FROM OPTICAL LINEAR POLARIZATION DURING THE QUIESCENT PHASE, ASTRONOMICAL JOURNAL, 140(1), 235-241, 201007
    Link to Paper Search Results by DOI
  75. DARK" GRB 080325 IN A DUSTY MASSIVE GALAXY AT z similar to 2", ASTROPHYSICAL JOURNAL, 719(1), 378-384, 20100810
    Link to Paper Search Results by DOI
  76. A SPECTROPOLARIMETRIC TEST OF THE STRUCTURE OF THE INTRINSIC ABSORBERS IN THE QUASAR HS 1603+3820*, ASTROPHYSICAL JOURNAL, 719(2), 1890-1895, 20100820
    Link to Paper Search Results by DOI
  77. Infrared/optical-X-ray simultaneous observations of X-ray flares in GRB 071112C and GRB 080506, ASTRONOMY & ASTROPHYSICS, 519, 201009
    Link to Paper Search Results by DOI
  78. Optical behavior of GRB 061121 around its X-Ray shallow decay phase, ASTRONOMY & ASTROPHYSICS, 526, 201102
    Link to Paper Search Results by DOI
  79. Interpretation of photo-polarimetric observations of comet 17P/Holmes, JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER, 112(11), 1848-1863, 201107
    Link to Paper Search Results by DOI
  80. Large Variations in the Polarization Properties of Nova Cassiopeiae 1993, 186-190, 19960401
  81. A New Spectropolarimeter at the Dodaira Observatory, Publication of the Astronomical Society of the Pacific, 111, 898-908, 19990701
  82. Nova V4444 Sagittarii 1999: Spectropolarimetric Evidence for a Preexisting Circumstellar Dust Cloud, Astrophysical Journal, 540, 429-435, 20000901
  83. Spectropolarimetric Evidence of Asymmetric Outburst in the Fast Nova V1494 Aquilae, Astrophysical Journal, 552, 782-786, 20010501
  84. SUPERNOVA 2002ap IN M74, International Astronomical Union Circulars, 7835, 20020201
  85. ★, Optical Spectropolarimetry of SN 2002ap: A High-Velocity Asymmetric Explosion, Astrophysical Journal, 580, L39-L42, 20021101
  86. Properties of FOCAS Optical Component, in Instrument Design and Performance for Optical/Infrared Ground-Based Telescopes= Proc. SPIE, 4841, 1219-1228, 20030401
  87. Optical Spectropolarimetry of SN 2002ap: A High Velocity Asymmetric Explosion, Proc. of IAU 8th Asian-Pacific Regional Meeting, 333-334, 20030401
  88. GRB 030329 AND SUPERNOVA 2003dh, International Astronomical Union Circulars, 8133, 20030501
  89. Supernova 2002ic, International Astronomical Union Circulars, 8161, 20030701
  90. ★, On The Spectrum and Spectropolarimetry of Type Ic Hypernova SN 2003dh/GRB 030329, Astrophysical Journal, 539, L19-L22, 20030801
  91. Novel immersion grating, VPH grating, and quasi-Bragg grating, Proceedings of the SPIE, 6237, 62732, 20060701
  92. SN 2006aj Associated with XRF 060218 at Late Phases: Nucleosynthesis Signature of a Neutron Star-driven Explosion, The Astrophysical Journal, 658(1), L5-L8, 20070301
  93. Early Spectroscopy of the 2010 Outburst of U Scorpii, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(5), L37-L41, 20100101
  94. Spectropolarimetry of the Superwind Filaments of the Starburst Galaxy M 82: Kinematics of Dust Outflow, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63, S493-S503, 20110101
  95. Correlation between Interstellar Polarization and Dust Temperature: Is the Alignment of Grains by Radiative Torques Ubiquitous?, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(5), L43-L47, 20110101
  96. No Evidence for Variability of Intervening Absorption Lines toward GRB 060206: Implications for the Mg II Incidence Problem, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(2), 387-394, 20090101
  97. Early Spectral Evolution of the Rapidly Expanding Type Ia Supernova 2006X, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(4), 713-720, 20090101
  98. Grisms Developed for FOCAS, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63, S613-S622, 20110101
  99. Bayesian Approach to Find a Long-Term Trend in Erratic Polarization Variations Observed in Blazars, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(1), 69-80, 20100101
  100. Discovery of a WZ sge-type dwarf nova, SDSS j102146.44+234926.3: Unprecedented infrared activity during a rebrightening phase, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 60(2), 227-236, 20080101
  101. Multiband Photopolarimetric Monitoring of an Outburst of the Blazar 3C 454.3 in 2007, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(3), 645-652, 20100101
  102. The 2006 November Outburst of EG Aquarii: the SU UMa Nature Revealed, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 60(5), 1151-1158, 20080101
  103. Prominent Polarized Flares of the Blazars AO 0235+164 and PKS 1510-089, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(3), 489-497, 20110101
  104. Dwarf Novae in the Shortest Orbital Period Regime. I A New Short Superhump Period Dwarf Nova, OT J055717+683226, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(1), 187-199, 20100101
  105. Optical and Near-Infrared Photometric Observation during the Superoutburst of the WZ Sge-Type Dwarf Nova, V455 Andromedae, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(5), 1081-1092, 20090101
  106. Optical and Near-Infrared Photometry of Nova V2362 Cyg: Rebrightening Event and Dust Formation, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(4), 1103-1108, 20100101
  107. Anti-Correlation of Near-Infrared and X-Ray Variations of the Microquasar GRS 1915+105 in the Soft State, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(3), L1-L5, 20090101
  108. Photopolarimetric Monitoring of Blazars in the Optical and Near-Infrared Bands with the Kanata Telescope. I. Correlations between Flux, Color, and Polarization, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(3), 639-675, 20110101
  109. Spectral evolution of the GRB 030329 afterglow: Detection of the supernova nebular phase emissions, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 56(1), 61-68, 2004
    Link to Paper Search Results by DOI
  110. Polarized H alpha wings in the symbiotic stars AG draconis and Z andromedae, ASTROPHYSICAL JOURNAL, 604(1), 357-361, 20040320
    Link to Paper Search Results by DOI
  111. Subaru spectroscopy of the interacting type Ia supernova SN 2002ic: Evidence of a hydrogen-rich, asymmetric circumstellar medium, ASTROPHYSICAL JOURNAL, 605(1), L37-L40, 20040410
    Link to Paper Search Results by DOI
  112. Detection of the polarized broad emission line in the Seyfert 2 galaxy Markarian 573, ASTRONOMICAL JOURNAL, 128(1), 109-114, 200407
    Link to Paper Search Results by DOI
  113. Subaru spectropolarimetry of Markarian 573: The hidden high-ionization nuclear emission-line region inside the dusty torus, ASTRONOMICAL JOURNAL, 128(5), 2066-2072, 200411
    Link to Paper Search Results by DOI
  114. Properties of SN 2003dh associated with GRB 030329, PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 433-434, 2004
    Link to Paper Search Results by DOI
  115. An asymmetric energetic type Ic supernova viewed off-axis, and a link to gamma ray bursts, SCIENCE, 308(5726), 1284-1287, 20050527
    Link to Paper Search Results by DOI
  116. The unique type Ib supernova 2005bf: A WN star explosion model for peculiar light curves and spectra, ASTROPHYSICAL JOURNAL, 633(2), L97-L100, 20051110
    Link to Paper Search Results by DOI
  117. An optical spectrum of the afterglow of a gamma-ray burst at a redshift of z=6.295, NATURE, 440(7081), 184-186, 20060309
    Link to Paper Search Results by DOI
  118. Spectropolarimetric study on circumstellar structure of microquasar LS I+61(circle) 303, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 58(6), 1015-1022, 2006
    Link to Paper Search Results by DOI
  119. Discovery of a WZ sge-type dwarf nova, SDSS j102146.44+234926.3: Unprecedented infrared activity during a rebrightening phase, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 60(2), 227-236, 2008
    Link to Paper Search Results by DOI
  120. The 2006 November Outburst of EG Aquarii: the SU UMa Nature Revealed, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 60(5), 1151-1158, 2008
    Link to Paper Search Results by DOI
  121. No Evidence for Variability of Intervening Absorption Lines toward GRB 060206: Implications for the Mg II Incidence Problem, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(2), 387-394, 2009
    Link to Paper Search Results by DOI
  122. Anti-Correlation of Near-Infrared and X-Ray Variations of the Microquasar GRS 1915+105 in the Soft State, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(3), L1-L5, 2009
    Link to Paper Search Results by DOI
  123. Early Spectral Evolution of the Rapidly Expanding Type Ia Supernova 2006X, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(4), 713-720, 2009
    Link to Paper Search Results by DOI
  124. Optical and Near-Infrared Photometric Observation during the Superoutburst of the WZ Sge-Type Dwarf Nova, V455 Andromedae, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 61(5), 1081-1092, 2009
    Link to Paper Search Results by DOI
  125. Bayesian Approach to Find a Long-Term Trend in Erratic Polarization Variations Observed in Blazars, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(1), 69-80, 2010
    Link to Paper Search Results by DOI
  126. Dwarf Novae in the Shortest Orbital Period Regime. I A New Short Superhump Period Dwarf Nova, OT J055717+683226, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(1), 187-199, 2010
    Link to Paper Search Results by DOI
  127. Multiband Photopolarimetric Monitoring of an Outburst of the Blazar 3C 454.3 in 2007, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(3), 645-652, 2010
    Link to Paper Search Results by DOI
  128. Optical and Near-Infrared Photometry of Nova V2362 Cyg: Rebrightening Event and Dust Formation, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(4), 1103-1108, 2010
    Link to Paper Search Results by DOI
  129. Early Spectroscopy of the 2010 Outburst of U Scorpii, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 62(5), L37-L41, 2010
    Link to Paper Search Results by DOI
  130. Correlation between Interstellar Polarization and Dust Temperature: Is the Alignment of Grains by Radiative Torques Ubiquitous?, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(5), L43-L47, 2011
    Link to Paper Search Results by DOI
  131. Spectropolarimetry of the Superwind Filaments of the Starburst Galaxy M 82: Kinematics of Dust Outflow, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63, S493-S503, 2011
    Link to Paper Search Results by DOI
  132. Grisms Developed for FOCAS, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63, S613-S622, 2011
    Link to Paper Search Results by DOI
  133. Prominent Polarized Flares of the Blazars AO 0235+164 and PKS 1510-089, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(3), 489-497, 2011
    Link to Paper Search Results by DOI
  134. Photopolarimetric Monitoring of Blazars in the Optical and Near-Infrared Bands with the Kanata Telescope. I. Correlations between Flux, Color, and Polarization, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(3), 639-675, 2011
    Link to Paper Search Results by DOI
  135. Multi-Wavelength Photometric and Polarimetric Observations of the Outburst of 3C 454.3 in 2009 December, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 64(3), 20120625
    Link to Paper Search Results by DOI
  136. MULTI-WAVELENGTH OBSERVATIONS OF BLAZAR AO 0235+164 IN THE 2008-2009 FLARING STATE, ASTROPHYSICAL JOURNAL, 751(2), 20120601
    Link to Paper Search Results by DOI
  137. GRB 091208B: FIRST DETECTION OF THE OPTICAL POLARIZATION IN EARLY FORWARD SHOCK EMISSION OF A GAMMA-RAY BURST AFTERGLOW, ASTROPHYSICAL JOURNAL LETTERS, 752(1), 20120610
    Link to Paper Search Results by DOI
  138. THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D, ASTROPHYSICAL JOURNAL, 753(1), 20120701
    Link to Paper Search Results by DOI
  139. THREE-DIMENSIONAL EXPLOSION GEOMETRY OF STRIPPED-ENVELOPE CORE-COLLAPSE SUPERNOVAE. I. SPECTROPOLARIMETRIC OBSERVATIONS, ASTROPHYSICAL JOURNAL, 754(1), 20120720
    Link to Paper Search Results by DOI
  140. THE STRUCTURE AND EMISSION MODEL OF THE RELATIVISTIC JET IN THE QUASAR 3C 279 INFERRED FROM RADIO TO HIGH-ENERGY gamma-RAY OBSERVATIONS IN 2008-2010, ASTROPHYSICAL JOURNAL, 754(2), 20120801
    Link to Paper Search Results by DOI
  141. Radio to gamma-ray variability study of blazar S5 0716+714, ASTRONOMY & ASTROPHYSICS, 552, 201304
    Link to Paper Search Results by DOI
  142. SN 2009js AT THE CROSSROADS BETWEEN NORMAL AND SUBLUMINOUS TYPE IIP SUPERNOVAE: OPTICAL AND MID-INFRARED EVOLUTION, ASTROPHYSICAL JOURNAL, 767(2), 20130420
    Link to Paper Search Results by DOI
  143. A Study of the Long-Term Spectral Variations of 3C 66A Observed with the Fermi and Kanata Telescopes, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 65(1), 20130225
    Link to Paper Search Results by DOI
  144. DENSE OPTICAL AND NEAR-INFRARED MONITORING OF CTA 102 DURING HIGH STATE IN 2012 WITH OISTER: DETECTION OF INTRA-NIGHT ORPHAN POLARIZED FLUX FLARE"", ASTROPHYSICAL JOURNAL LETTERS, 768(2), 20130510
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  145. X-Ray and Optical Monitoring of a Gamma-Ray-Emitting Radio Galaxy, NGC 1275, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 65(2), 20130425
    Link to Paper Search Results by DOI
  146. Photopolarimetric Monitoring of the Blazar BL Lac in the Optical and Near-Infrared Bands: Decay of the Long-Lived Component, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 65(2), 20130425
    Link to Paper Search Results by DOI
  147. Phase Variation of Earthshine Polarization Spectra, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 65(2), 20130425
    Link to Paper Search Results by DOI
  148. A LUMINOUS AND FAST-EXPANDING TYPE Ib SUPERNOVA SN 2012au, ASTROPHYSICAL JOURNAL LETTERS, 772(2), 20130801
    Link to Paper Search Results by DOI
  149. MINUTE-SCALE RAPID VARIABILITY OF THE OPTICAL POLARIZATION IN THE NARROW-LINE SEYFERT 1 GALAXY PMN J0948+0022, ASTROPHYSICAL JOURNAL LETTERS, 775(1), 20130920
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  150. PROPERTIES OF NEWLY FORMED DUST GRAINS IN THE LUMINOUS TYPE IIn SUPERNOVA 2010jl, ASTROPHYSICAL JOURNAL, 776(1), 20131010
    Link to Paper Search Results by DOI
  151. EARLY-PHASE PHOTOMETRY AND SPECTROSCOPY OF TRANSITIONAL TYPE Ia SN 2012ht: DIRECT CONSTRAINT ON THE RISE TIME, ASTROPHYSICAL JOURNAL LETTERS, 782(2), 20140220
    Link to Paper Search Results by DOI
  152. EXTREMELY HIGH POLARIZATION IN THE 2010 OUTBURST OF BLAZAR 3C 454.3, ASTROPHYSICAL JOURNAL, 784(2), 20140401
    Link to Paper Search Results by DOI
  153. Two active states of the narrow-line gamma-ray-loud AGN GB 1310+487, ASTRONOMY & ASTROPHYSICS, 565, 201405
    Link to Paper Search Results by DOI
  154. DISCOVERY OF DRAMATIC OPTICAL VARIABILITY IN SDSS J1100+4421: A PECULIAR RADIO-LOUD NARROW-LINE SEYFERT 1 GALAXY?, ASTROPHYSICAL JOURNAL LETTERS, 793(2), 20141001
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  155. THE BROAD-LINED Type Ic SN 2012ap AND THE NATURE OF RELATIVISTIC SUPERNOVAE LACKING A GAMMA-RAY BURST DETECTION, ASTROPHYSICAL JOURNAL, 799(1), 20150120
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  156. ★, OPTICAL AND NEAR-INFRARED POLARIMETRY OF HIGHLY REDDENED Type Ia SUPERNOVA 2014J: PECULIAR PROPERTIES OF DUST IN M82, ASTROPHYSICAL JOURNAL LETTERS, 795(1), 20141101
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  157. Variable optical polarization during high state in gamma-ray loud, narrow-line Seyfert 1 galaxy 1H 0323+342, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 66(6), 201412
    Link to Paper Search Results by DOI
  158. Kiso Supernova Survey (KISS): Survey strategy, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 66(6), 201412
    Link to Paper Search Results by DOI
  159. An emergence of a new polarized emission region in blazar Mrk 421 associated with an X-ray flare, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 67(3), 201506
    Link to Paper Search Results by DOI
  160. Variable selection for modeling the absolute magnitude at maximum of Type Ia supernovae, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 67(3), 201506
    Link to Paper Search Results by DOI
  161. OISTER OPTICAL AND NEAR-INFRARED OBSERVATIONS OF TYPE IAX SUPERNOVA 2012Z, ASTROPHYSICAL JOURNAL, 806(2), 20150620
    Link to Paper Search Results by DOI
  162. TYPE IIb SUPERNOVA 2013df ENTERING INTO AN INTERACTION PHASE: A LINK BETWEEN THE PROGENITOR AND THE MASS LOSS, ASTROPHYSICAL JOURNAL, 807(1), 20150701
    Link to Paper Search Results by DOI
  163. RAPID VARIABILITY OF BLAZAR 3C 279 DURING FLARING STATES IN 2013-2014 WITH JOINT FERMI-LAT, NuSTAR, SWIFT, AND GROUND-BASED MULTI-WAVELENGTH OBSERVATIONS, ASTROPHYSICAL JOURNAL, 807(1), 20150701
    Link to Paper Search Results by DOI
  164. Nebular phase observations of the Type-Ib supernova iPTF13bvn favour a binary progenitor, ASTRONOMY & ASTROPHYSICS, 579, 201507
    Link to Paper Search Results by DOI
  165. DISCOVERY OF A HIGHLY POLARIZED OPTICAL MICROFLARE IN BLAZAR S5 0716+714 DURING THE 2014 WEBT CAMPAIGN, ASTROPHYSICAL JOURNAL LETTERS, 809(2), 20150820
    Link to Paper Search Results by DOI
  166. OPTICAL I-BAND LINEAR POLARIMETRY OF THE MAGNETAR 4U 0142+61 WITH SUBARU, ASTROPHYSICAL JOURNAL, 814(2), 20151201
    Link to Paper Search Results by DOI
  167. SODIUM ABSORPTION SYSTEMS TOWARD SN Ia 2014J ORIGINATE ON INTERSTELLAR SCALES, ASTROPHYSICAL JOURNAL, 816(2), 20160110
    Link to Paper Search Results by DOI
  168. Broad-band polarimetric investigation of the Type II-plateau supernova 2013ej, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 456(3), 3157-3167, 20160301
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  169. NO EVIDENCE OF INTRINSIC OPTICAL/NEAR-INFRARED LINEAR POLARIZATION FOR V404 CYGNI DURING ITS BRIGHT OUTBURST IN 2015: BROADBAND MODELING AND CONSTRAINT ON JET PARAMETERS, ASTROPHYSICAL JOURNAL, 823(1), 20160520
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  170. Polarization angle swings in blazars: The case of 3C 279, ASTRONOMY & ASTROPHYSICS, 590, 201606
    Link to Paper Search Results by DOI
  171. X-RAY AND OPTICAL CORRELATION OF TYPE I SEYFERT NGC 3516 STUDIED WITH SUZAKU AND JAPANESE GROUND-BASED TELESCOPES, ASTROPHYSICAL JOURNAL, 828(2), 20160910
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  172. SUPPLEMENT: LOCALIZATION AND BROADBAND FOLLOW-UP OF THE GRAVITATIONAL-WAVE TRANSIENT GW150914" (2016, ApJL, 826, L13)", ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 225(1), 201607
    Link to Paper Search Results by DOI
  173. J-GEM follow-up observations to search for an optical counterpart of the first gravitational wave source GW150914, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 68(4), 201608
    Link to Paper Search Results by DOI
  174. OISTER optical and near-infrared observations of the super-Chandrasekhar supernova candidate SN 2012dn: Dust emission from the circumstellar shell, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 68(5), 201610
    Link to Paper Search Results by DOI
  175. MULTIFREQUENCY PHOTO-POLARIMETRIC WEBT OBSERVATION CAMPAIGN ON THE BLAZAR S5 0716+714: SOURCE MICROVARIABILITY AND SEARCH FOR CHARACTERISTIC TIMESCALES, ASTROPHYSICAL JOURNAL, 831(1), 20161101
    Link to Paper Search Results by DOI
  176. THE ERUPTION OF THE CANDIDATE YOUNG STAR ASASSN-15QI, ASTROPHYSICAL JOURNAL, 831(2), 20161120
    Link to Paper Search Results by DOI
  177. 2014-2015 MULTIPLE OUTBURSTS OF 15P/FINLAY, ASTRONOMICAL JOURNAL, 152(6), 201612
    Link to Paper Search Results by DOI
  178. TWO DISTINCT-ABSORPTION X-RAY COMPONENTS FROM TYPE IIn SUPERNOVAE: EVIDENCE FOR ASPHERICITY IN THE CIRCUMSTELLAR MEDIUM, ASTROPHYSICAL JOURNAL, 832(2), 20161201
    Link to Paper Search Results by DOI
  179. J-GEM follow-up observations of the gravitational wave source GW151226, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 69(1), 201702
    Link to Paper Search Results by DOI
  180. A measurement of interstellar polarization and an estimation of Galactic extinction for the direction of the X-ray black hole binary V404 Cygni, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 69(2), 201704
    Link to Paper Search Results by DOI
  181. Broad-lined Supernova 2016coi with a Helium Envelope, ASTROPHYSICAL JOURNAL, 837(1), 20170301
    Link to Paper Search Results by DOI
  182. Three-dimensional Explosion Geometry of Stripped-envelope Core-collapse Supernovae. II. Modeling of Polarization, ASTROPHYSICAL JOURNAL, 837(2), 20170310
    Link to Paper Search Results by DOI
  183. LOCALIZATION AND BROADBAND FOLLOW-UP OF THE GRAVITATIONAL-WAVE TRANSIENT GW 150914, ASTROPHYSICAL JOURNAL LETTERS, 826(1), 20160720
    Link to Paper Search Results by DOI
  184. First Results from BISTRO: A SCUBA-2 Polarimeter Survey of the Gould Belt, ASTROPHYSICAL JOURNAL, 842(1), 20170610
    Link to Paper Search Results by DOI
  185. SYSTEMATIC STUDY OF GAMMA-RAY-BRIGHT BLAZARS WITH OPTICAL POLARIZATION AND GAMMA-RAY VARIABILITY, ASTROPHYSICAL JOURNAL, 833(1), 20161210
    Link to Paper Search Results by DOI
  186. Wide-field one-shot optical polarimeter: HOWPol, Proceedings of the SPIE, 7014, 70144L, 200807
  187. Optical and Near-infrared Polarimetry of Non-periodic Comet C/2013 US10 (Catalina), ASTRONOMICAL JOURNAL, 154(4), 201710
    Link to Paper Search Results by DOI
  188. Multi-messenger Observations of a Binary Neutron Star Merger, ASTROPHYSICAL JOURNAL LETTERS, 848(2), 20171020
    Link to Paper Search Results by DOI
  189. J-GEM observations of an electromagnetic counterpart to the neutron star merger GW170817, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 69(6), 201712
    Link to Paper Search Results by DOI
  190. Kilonova from post-merger ejecta as an optical and near-Infrared counterpart of GW170817, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 69(6), 201712
    Link to Paper Search Results by DOI
  191. The TOP-SCOPE Survey of Planck Galactic Cold Clumps: Survey Overview and Results of an Exemplar Source, PGCC G26.53+0.17, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 234(2), 201802
    Link to Paper Search Results by DOI
  192. A challenge to identify an optical counterpart of the gravitational wave event GW151226 with Hyper Suprime-Cam(dagger), PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70(1), 201801
    Link to Paper Search Results by DOI
  193. Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni, SCIENCE, 329(5993), 817-821, 20100813
    Link to Paper Search Results by DOI
  194. Subaru Hyper Suprime-Cam Survey for an optical counterpart of GW170817, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70(2), 201803
    Link to Paper Search Results by DOI
  195. A First Look at BISTRO Observations of the rho Oph-A core, ASTROPHYSICAL JOURNAL, 859(1), 20180520
    Link to Paper Search Results by DOI
  196. The Low-luminosity Type IIP Supernova 2016bkv with Early-phase Circumstellar Interaction, ASTROPHYSICAL JOURNAL, 859(2), 20180601
    Link to Paper Search Results by DOI
  197. Polarimetric Monitoring of Jets with Kanata Telescope, GALAXIES, 6(1), 201803
    Link to Paper Search Results by DOI
  198. Magnetic Fields toward Ophiuchus-B Derived from SCUBA-2 Polarization Measurements, ASTROPHYSICAL JOURNAL, 861(1), 20180701
    Link to Paper Search Results by DOI
  199. Multimessenger observations of a flaring blazar coincident with high-energy neutrino IceCube-170922A, SCIENCE, 361(6398), 146-+, 20180713
    Link to Paper Search Results by DOI
  200. High polarization degree of the continuum of comet 2P/Encke based on spectropolarimetric signals during its 2017 apparition, ASTRONOMY & ASTROPHYSICS, 620, 20181212
    Link to Paper Search Results by DOI
  201. Extended optical/NIR observations of Type Iax supernova 2014dt: Possible signatures of a bound remnant, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70(6), 201812
    Link to Paper Search Results by DOI
  202. SN 2017czd: A Rapidly Evolving Supernova from a Weak Explosion of a Type IIb Supernova Progenitor, ASTROPHYSICAL JOURNAL, 875(1), 20190410
    Link to Paper Search Results by DOI
  203. JCMT BISTRO Survey: Magnetic Fields within the Hub-filament Structure in IC 5146, ASTROPHYSICAL JOURNAL, 876(1), 20190501
    Link to Paper Search Results by DOI
  204. The JCMT BISTRO Survey: The Magnetic Field in the Starless Core rho Ophiuchus C, ASTROPHYSICAL JOURNAL, 877(1), 20190520
    Link to Paper Search Results by DOI
  205. The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-forming Region, ASTROPHYSICAL JOURNAL, 877(2), 20190601
    Link to Paper Search Results by DOI
  206. SCOPE: SCUBA-2 Continuum Observations of Pre-protostellar Evolution - survey description and compact source catalogue, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 485(2), 2895-2908, 201905
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  207. Spectropolarimetry of the superwind filaments of the starburst galaxy M82 II: Kinematics of the dust surrounding the nuclear starburst, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 71(4), 201908
    Link to Paper Search Results by DOI
  208. SN 2018hna: 1987A-like Supernova with a Signature of Shock Breakout, ASTROPHYSICAL JOURNAL LETTERS, 882(2), 20190910
    Link to Paper Search Results by DOI
  209. On the observational behaviour of the highly polarized Type IIn supernova SN 2017hcc, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 488(3), 3089-3099, 201909
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  210. Comparison of polarization at two lunar eclipse events, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 71(2), 201904
    Link to Paper Search Results by DOI
  211. A type la supernova at the heart of superluminous transient SN 2006gy, SCIENCE, 367(6476), 415-+, 20200124
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  212. An optical search for transients lasting a few seconds, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 72(1), 202002
    Link to Paper Search Results by DOI
  213. Near-infrared monitoring of the accretion outburst in the massive young stellar object S255-NIRS3, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 72(1), 202002
    Link to Paper Search Results by DOI
  214. SN 2019ein: New Insights into the Similarities and Diversity among High-velocity Type Ia Supernovae, ASTROPHYSICAL JOURNAL, 893(2), 202004
    Link to Paper Search Results by DOI
  215. Late-phase Spectropolarimetric Observations of Superluminous Supernova SN 2017egm to Probe the Geometry of the Inner Ejecta, ASTROPHYSICAL JOURNAL, 894(2), 202005
    Link to Paper Search Results by DOI
  216. Evidence for planetary hypothesis for PTFO 8-8695 b with five-year optical/infrared monitoring observations, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 72(2), 202004
    Link to Paper Search Results by DOI
  217. The JCMT BISTRO Survey: Magnetic Fields Associated with a Network of Filaments in NGC 1333, ASTROPHYSICAL JOURNAL, 899(1), 202008
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  218. Blazar Radio and Optical Survey (BROS): A Catalog of Blazar Candidates Showing Flat Radio Spectrum and Their Optical Identification in Pan-STARRS1 Surveys, ASTROPHYSICAL JOURNAL, 901(1), 202009
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  219. Direct Evidence of Two-component Ejecta in Supernova 2016gkg from Nebular Spectroscopy*, ASTROPHYSICAL JOURNAL, 902(2), 202010
    Link to Paper Search Results by DOI
  220. Trigonometric parallax of O-rich Mira variable star OZ Gem (IRAS 07308+3037): A confirmation of the difference between the P-L relations of the Large Magellanic Cloud and the Milky Way, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 72(4), 202008
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  221. Observations of Magnetic Fields Surrounding LkH alpha 101 Taken by the BISTRO Survey with JCMT-POL-2, ASTROPHYSICAL JOURNAL, 908(1), 202102
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  222. Dust polarized emission observations of NGC 6334 BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network, ASTRONOMY & ASTROPHYSICS, 647, 20210311
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  223. Implications of High Polarization Degree for the Surface State of Ryugu, ASTROPHYSICAL JOURNAL LETTERS, 911(2), 202104
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  224. Calcium-rich Transient SN 2019ehk in a Star-forming Environment: Yet Another Candidate for a Precursor of a Double Neutron-star Binary, ASTROPHYSICAL JOURNAL, 912(1), 202105
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  225. Multi-wavelength photometry during the 2018 superoutburst of the WZ Sge-type dwarf nova EG Cancri, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 73(1), 1-13, 202102
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  226. Follow-up observations for IceCube-170922A: Detection of rapid near-infrared variability and intensive monitoring of TXS 0506+056, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 73(1), 25-43, 202102
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  227. The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry, ASTROPHYSICAL JOURNAL LETTERS, 912(2), 202105
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  228. Light-curve properties of SN 2017fgc and HV SNe Ia, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 502(3), 4112-4124, 202104
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  229. J-GEM optical and near-infrared follow-up of gravitational wave events during LIGO's and Virgo's third observing run, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, 2021(5), 202105
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  230. Origins of the Long-term Variability of the Near-infrared Emission of the Black Hole X-Ray Binary GRS 1915+105 in the X-Ray Low Luminous State, ASTROPHYSICAL JOURNAL, 916(2), 202108
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  231. ASASSN-14ms: The Most Energetic Known Explosion of a Type Ibn Supernova and Its Physical Origin, ASTROPHYSICAL JOURNAL, 917(2), 202108
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  232. The JCMT BISTRO Survey: An 850/450 mu m Polarization Study of NGC 2071IR in Orion B, ASTROPHYSICAL JOURNAL, 918(2), 202109
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  233. Intermediate luminosity type lax supernova 2019muj with narrow absorption lines: Long-lasting radiation associated with a possible bound remnant predicted by the weak deflagration model, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 73(5), 1295-1314, 202110
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  234. Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment, ASTROPHYSICAL JOURNAL LETTERS, 923(1), 202112
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  235. Kottamia Faint Imaging Spectro-Polarimeter (KFISP): opto-mechanical design, software control and performance analysis, EXPERIMENTAL ASTRONOMY, 53(1), 45-70, 202202
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Invited Lecture, Oral Presentation, Poster Presentation

  1. Design and fabrication of double Koester prism for HZG, Koji S. Kawabata (Hiroshima Univ), Kohji Tsumura (Tokyo City Univ), Daisuke Yonetoku (Kanazawa Univ) , Hideo Matsuhara (ISAS/JAXA), Shuji Matsuura (Kwansei Gakuin Univ), Akihito Doi (ISAS/JAXA), Hiroshi Akitaya (Chiba Institute of Technology), Tomoya Hori (Hiroshima Univ), and HiZ-GUNDAM team, The Creation of the Multi-messenger Astrophysics, the 1st annual conference, 2023/12/05, Without Invitation, English, Manegement group, Grant-in-Aid for Transformative Research Areas (A) The creation of multi-messenger astrophysics, Suimeikan, Gero, Gifu
    Related URL
  2. Develpment of Astronomical Detector at Hiroshima Astrophysical Science Center, Koji S. Kawabata, UEMCOS2022: 4th International Conference on Sensors & Transducers 2022, 2022/09/22, Without Invitation, English, UEM Kolkata, India, UEM Kolkata/Online
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  3. Galactic Magnetic Field Studied by Recent Kanata/HONIR Polarimetric Survey, Koji Kawabata, SGMAP team, Workshop on supernovae/transients, 2023/03/27, Without Invitation, English, Koji Kawabata, Tatsuya Nakaoka, Anjasha Gangopadhyay, Avinash Singh (Hiroshima U.), Masayuki Yamanaka (Kagoshima U.), Faculty of Science Buidling C212 room, Hiroshima Univ.
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  4. Observational Studies of Supernova with 1.5m Kanata Telescope, Koji Kawabata, Kanata Telescope team, Exploring the Transient Universe, 2022/12/14, With Invitation, English, Keiichi Maeda (Kyoto U.; Chair), Mamoru Doi (U. Tokyo), Toshikazu Shigeyama (U. Tokyo), The University of Tokyo (Hongo campus), 5F Auditorium, Faculty of Science Chemistry Bldg.
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  5. Optical Polarimetry for Bright Early Afterglow of GRB 180720B, Koji Kawabata, Kengo Takagi, Tatsuya Nakaoka (Hiroshima Univ), Miho Kawabata (Kyoto Univ) and Kanata GRB team, Astronomical Polarimetry 2020: New Era of Multi-wavelength Polarimetry, 2021/03/25, Without Invitation, English, Hiroshima University, Kagoshima University, International Astronomical Union, Higashi Hiroshima Arts & Culture Hall Kurara, Higashi-Hiroshima, Hiroshima, Japan
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  6. Time domain astronomy with `Kanata' and `HinOTORI' telescopes, Kawabata, K. S., Kanata Telescope team, HinOTORI Telescope team, AMON Workshop 2019, 2019/05/21, With Invitation, English, Cowen, Doug (Penn State Univ.; AMON) Yoshida, Shigeru (Chiba Univ.), Engineering Research Building, Chiba University (Chiba), This workshop is being held to explore the future potential of multi-messenger observations by the collection of sub-threshold events, which cannot be recognized as intriguing signals by observations in individual experiments (such as neutrino, gamma-ray, gravitation wave, etc.), as well as investigating unknown celestial phenomena by comparing mutual time and space correlation. We also would like to exchange ideas and informations between various observatories including ones conducting non-electromagnetic sky monitor such as neutrino telescopes.
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  7. Supernovae and related objects unveiled by TMT, Koji S. Kawabata, TMT Science and Instrumentation Workshop 2011, 2011/03/28, With Invitation, English, Victoria, Canada
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  8. Probing the evolution of massive stars by late-time observations of core-collapse supernovae, Koji S. Kawabata, Kore-Japan Collaboration Workshop, 2012/11/15, With Invitation, English, Subaru Telescope, National Astronomical Observatory of Japan, and KASI, Korea, Seoul National University
  9. TMT Polarimetry for Supernovae and Related Objects, Koji S. Kawabata, TMT Science and Instrumentation Workshop 2012, 2012/12/10, With Invitation, English, IUCAA, Pune, India
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  10. Future SGMAP Project: Optical Polarimetric Survey of Northern Hemisphere, Koji S. Kawabata, Understanding Relativistic Jets by Polarimetry and Synergetic Study from Radio to TeV, 2014/03/24, Without Invitation, English, CORE-U, Hiroshima Univ., Hiroshima Univ.
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  11. Optical and NIR observation of GRB afterglows, Koji S. Kawabata, GRB Workshop 2015, 2015/08/31, With Invitation, English, Nagataki, S. (Chair), Shigeyama, T., Kawai, N., Yonetoku, D., Serino, M., RIKEN, Wako, Saitama, Japan
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  12. J-GEM Follow-up Observations for gravitational wave events and GW170817, Koji S. Kawabata, J-GEM team, The 27th Workshop on General Relativity and Gravitation in Japan, 2017/11/28, With Invitation, English
  13. SPICA FIR Polarimetry for ISM and Transient Objects, Koji S. Kawabata, SPICA domestic workshop 2017, 2017/11/22, With Invitation, English
  14. Optical and NIR follow-up observations for transient objects 　with Hirosima 1.5-m telescope and tutorial `how to read 　the data’, Koji S. Kawabata, Kanata team, Multimessenger astronomy workshop 2018, 2018/03/27, With Invitation, English
  15. Time domain astronomy with `Kanata' and `HinOTORI' telescopes, Koji S. Kawabata, AMON WORKSHOP 2019, 2019/05/21, With Invitation, English, Doug Cowen (Penn State Univ.), Shigeru Yoshida (Chiba Univ.), ICEHAP Neutrino Astrophysics Dept., Chiba Univ.
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  16. Review of HinOTORI project / HinOTORI open-use and management related / The coming efforts for HinOTORI support, fund and team, extention of MoU, Koji S. Kawabata, Workshop on Ali-HinOTORI and China-Japan Cooperation based on Ali Platform, 2019/03/28, Without Invitation, English, National Astronomical Observatory, Chinese Academy of Science

Awards

  1. 2020/03/17, The PASJ Excellent Paper Award, Astronomical Society of Japan, Kilonova from post-merger ejecta as an optical and near-Infrared counterpart of GW170817
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External Funds

Acceptance Results of Competitive Funds

  1. Natural Science Research Grants, Simultaneous optical and near-infrared 3 band polarimetry with the Hiroshima University Kanata Telescope and research into the structure of the galactic magnetic field, 2023/10, 2025/03
  2. 2010
  3. 2010
  4. 2004
  5. 2004
  6. KAKENHI, 2014, 2016
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  7. KAKENHI, Basic development of high sensitivity, large format and inexpensive near-infrared image sensor, 2011, 2013
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  8. KAKENHI, Simultaneous optical and NIR polarimetry of compact objects accompanied with astrophysical jets, 2011, 2013
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  9. KAKENHI, 2009, 2010
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  10. KAKENHI, Observational study of polarization of gamma-ray burst optical Afterglow using one-shot wide-field polarimeter, 2008, 2011
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  11. KAKENHI, Development of Next-generation Infrared High-resolution Spectrograph for Studying the Cosmic Re-ionization Era with High Redshift Gamma-ray Bursts, 2008, 2011
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  12. KAKENHI, Observation of the site of particle acceleration near black holes by high-speed spectrosopy, 2007, 2009
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  13. KAKENHI, 2005, 2007
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  14. KAKENHI, Study of Anisotropy of celestial objects with Spectro-photo-polarimetry, 2005, 2008
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  15. KAKENHI, Development of Dedicated Telescope for Observation of Transient & Cataclysmic Astronomical Objects by Using 1.5m Infrared Simulator, 2005, 2007
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  16. KAKENHI, 2002, 2006
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  17. KAKENHI, 2015, 2020
  18. KAKENHI(Grant-in-Aid for Scientific Research (A)), 2018, 2020

Social Activities

Organizing Academic Conferences, etc.

  1. Workshop on supernovae/transients, LOC of Workshop on supernovae/transients, 2023/03, 2023/03
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  2. 2021/11, 2021/11
  3. Astronomical Polarimetry 2020: New Era of Multi-wavelength Polarimetry, Local Organizing Committee, 2020/03, 2021/03
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  4. 2007/02
  5. 2010/10
  6. The 6th Subaru International Conference: Panoramas of the Evolving Cosmos, Local Organizing Comittee, 2016/11, 2016/12
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  7. 2nd CORE-U Conference: Cosmic Polarimetry from Micro to Macro Scales, Scientific Organizing Committee, 2017/02, 2017/02
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