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Publications in english (refereed papers)

  1. VRI CCD Photometric Observations of SN 1994I in M51
  2. Photometric Observation of an Extreme ER UMa Star RZ Leonis Minoris
  3. Type-Ia Supernova SN 1995D in NGC2962: Optical V, R, and I Band Photometry and Spectra
  4. Discovery of Two Types of Superhumps in WZ Sge-type Dwarf Nova AL Comae Berenices
  5. BVRI Photometric Light Curves of the Galactic Supersoft X-Ray Source RX J0019.8+2156
  6. VRI Light Curves of SS433: Photometry and Model
  7. The 1995 Superoutburst of the WZ Sge-Type Dwarf Nova AL Comae Berenices
  8. Irradiated Accretion Disk in the Galactic Supersoft X-Ray Source RX J0019.8+2156
  9. On the Orbital Period of EG Cancri
  10. New Outbursts of V1118 Ori
  11. "Huruhata's Variable" Revealed: the WZ Sge-Type Dwarf Nova EG Cancri
  12. A Search for Periodic and Quasi-Periodic Photometric Behavior in the Cataclysmic Variable TT Arietis
  13. The 1997 Outburst of BL Lacertae and Detection of a 0.6-mag Rapid Variation
  14. The orbital period of the dwarf nova HS Virginis, the revised Po-Ps relation and the "superhump" mass ratio distribution of SU UMa stars
  15. CCD Photometry of the 1999 Outburst of CG CMa
  16. CCD Photometry of the 1999 February Superoutburst of CY UMa
  17. CCD Observation of the 1998 October Superoutburst of PU Per: Confirmation as an SU UMa-type Dwarf Nova
  18. CCD Photometry of the 1998 December Outburst of AQ Eri
  19. CCD Observation of the 1997 November Outburst of V364 Peg: an SU UMa-type Dwarf Nova with a Long Orbital Period?
  20. CCD Photometry of the 1999 February Superoutburst of CT Hya
  21. A Theoretical Light-Curve Model for the 1999 Outburst of U Scorpii
  22. On the Secondary Star of the Galactic Supersoft X-Ray Source RX J0925.7-4758 and Doppler Tomography of the Emission Lines
  23. Discovery of a New Deeply Eclipsing SU UMa-Type Dwarf Nova, IY UMa (= TmzV85)
  24. A Model for the Quiescent Phase of the Recurrent Nova U Scorpii
  25. Discovery of a New SU UMa-Type Dwarf Nova, V1028 Cygni
  26. Discovery and Photometric Observation of the Optical Counterpart of a Possible Galactic Halo X-Ray Transient, XTE J1118+480
  27. Time-Resolved Optical Studies and Doppler Imaging of the Eclipsing Dwarf Nova V893 Scorpii
  28. Unusual Short-Period Dwarf Nova RX J2315.5-3049
  29. Superdisks in Supersoft X-Ray Sources
  30. Variability of Luyten's GM Sgr
  31. 1998 Superoutburst of the Large-Amplitude SU UMa-Type Dwarf Nova WX Ceti
  32. The 2000-2001 Superoutburst of the WZ Sge-Type Star RZ Leonis: a Clue to Understanding the Origin of Viscosity in Quiescent Dwarf Nova Disks
  33. Detailed Optical Behavior of the 2000 Outburst of the Eclipsing Recurrent Nova CI Aquilae
  34. Discovery of a New ER UMa-Type Dwarf Nova IX Draconis
  35. Observations of Selected Cataclysmic Variables. I. Time-Resolved Spectroscopy of WX Cet, TU Men, CU Vel and HS Vir
  36. First Detection of the Growing Humps at the Rapidly Rising Stage of Dwarf Novae AL Com and WZ Sge
  37. Spiral Structure in WZ Sagittae around the 2001 Outburst Maximum
  38. V893 Sco is not an ER UMa-Type Star
  39. Discovery of a Dwarf Nova Breaking the Standard Sequence of Compact Binary Evolution
  40. Supercritical Accretion Disks with Superwinds
  41. Optical Observations of XTE J1118+480 during the 2000 Outburst
  42. New SU UMa-Type Dwarf Nova DM Dra
  43. The WEBT BL Lacertae Campaign 2000
  44. Superhump Evolution in the Ultrashort Period Dwarf Nova 1RXS J232953.9+062814
  45. WZ Sge-Type Star V592 Herculis
  46. The Recurrent Nova U Scorpii in the 1999 Outburst: the First Detection of a Significant Orbital-Period Change
  47. CI Aquilae: a recurrent nova with an unusually long plateau phase
  48. Infrared spectroscopy of the supersoft X-ray source MR Vel
  49. The SU UMa Nature of the Dwarf Nova, DM Lyrae
  50. An atlas of line profile studies for SU UMa type cataclysmic variables
  51. Optical spectrum of CI Aql in the plateau phase
  52. Coordinated Multiwavelength Observations of BL Lacertae in 2000
  53. Superhumps and Repetitive Rebrightenings of the WZ Sge-Type Dwarf Nova, EG Cancri
  54. The Short-Time Variability of GRB021004
  55. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae
  56. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. II The Second Year (2009--2010)
  57. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. III. The Third Year (2010--2011)
  58. Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. IV. The Fourth Year (2011--2012)
  59. Multi-Color Photometry of the Outburst of the New WZ Sge-type Dwarf Nova, OT J012059.6+325545
  60. WZ Sge-Type Dwarf Novae with Multiple Rebrightenings: MASTER OT J211258.65+242145.4 and MASTER OT J203749.39+552210.3
  61. Early-phase Photometry and Spectroscopy of Transitional Type Ia SN 2012ht: Direct Constraint on the Rise Time
  62. Survey of period variations of superhumps in SU UMa-type dwarf novae. V. The fifth year (2012-2013)
  63. Study of Negative and Positive Superhumps in ER Ursae Majoris
  64. Superoutburst of SDSS J090221.35+381941.9: First measurement of mass ratio in an AM CVn-type object using growing superhumps
  65. Survey of period variations of superhumps in SU UMa-type dwarf novae. VI. The sixth year (2013-2014)
  66. Optical and Near-infrared Polarimetry of Highly Reddened Type Ia Supernova 2014J: Peculiar Properties of Dust in M82
  67. Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015)
  68. Repetitive patterns in rapid optical variations in the nearby black-hole binary V404 Cygni
  69. Photometric and polarimetric observations of fast declining Type II supernovae 2013hj and 2014G
  70. Primary Black Hole Spin in OJ 287 as Determined by the General Relativity Centenary Flare
  71. ASASSN-15jd: WZ Sge-type star with intermediate superoutburst between single and double ones
  72. Superoutburst of CR Bootis: Estimation of mass ratio of a typical AM CVn star by stage A superhumps
  73. Survey of period variations of superhumps in SU UMa-type dwarf novae. VIII. The eighth year (2015-2016)
  74. OISTER optical and near-infrared observations of the super-Chandrasekhar supernova candidate SN 2012dn: Dust emission from the circumstellar shell
  75. A Search for QPOs in the Blazar OJ287: Preliminary Results from the 2015/2016 Observing Campaign
  76. RZ Leonis Minoris bridging between ER Ursae Majoris-type dwarf nova and nova-like system
  77. Superoutburst of WZ Sge-type dwarf nova below the period minimum: ASASSN-15po
  78. Radio and optical intra-day variability observations of five blazars
  79. Rapid optical variations correlated with X-rays in the 2015 second outburst of V404 Cygni (GS 2023+338)
  80. Survey of period variations of superhumps in SU UMa-type dwarf novae. IX. The ninth year (2016-2017)
  81. Polarization and Spectral Energy Distribution in OJ 287 during the 2016/17 Outbursts
  82. Blazar spectral variability as explained by a twisted inhomogeneous jet
  83. Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a
  84. Stochastic Modeling of Multiwavelength Variability of the Classical BL Lac Object OJ 287 on Timescales Ranging from Decades to Hours
  85. On the nature of long-period dwarf novae with rare and low-amplitude outbursts
  86. Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using Its General Relativity Centenary Flare: Improved Orbital Parameters
  87. Extended optical/NIR observations of Type Iax supernova 2014dt: Possible signatures of a bound remnant
  88. Discovery of standstills in the SU UMa-type dwarf nova NY Serpentis
  89. Superhump period of SDSS J214354.59+124457.8: First Z Cam star with superhumps in the standstill
  90. Investigating the multiwavelength behaviour of the flat spectrum radio quasar CTA 102 during 2013-2017
  91. IW And-type state in IM Eridani
  92. Multiwavelength behaviour of the blazar 3C 279: decade-long study from γ-ray to radio
  93. Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287
  94. Multiwavelength Variability of BL Lacertae Measured with High Time Resolution
  95. Multi-wavelength photometry during the 2018 superoutburst of the WZ Sge-type dwarf nova EG Cancri
  96. The dual nature of blazar fast variability: Space and ground observations of S5 0716+714
  97. Spectroscopic and photometric observations of dwarf nova superoutbursts by the 3.8 m telescope Seimei and the Variable Star Network
  98. Rapid X-ray variability in Mkn 421 during a multiwavelength campaign
  99. Host galaxy magnitude of OJ 287 from its colours at minimum light
  100. Rapid Quasi-Periodic Oscillations in the Relativistic Jet of BL Lacertae
  101. Catching profound optical flares in blazars
  102. Refining the OJ 287 2022 impact flare arrival epoch
  103. The optical behaviour of BL Lacertae at its maximum brightness levels: a blend of geometry and energetics
  104. 2021 superoutburst of the WZ Sge-type dwarf nova V627 Pegasi lacks an early superhump phase
  105. Observational Implications of OJ 287's Predicted 2022 Disk Impact in the Black Hole Binary Model
  106. On the need of an ultramassive black hole in OJ 287
  107. Extreme photometric and polarimetric variability of blazar S4 0954+65 at its maximum optical and γ-ray brightness levels
  108. A Multiwavelength Light-curve Model of the Classical Nova V339 Del: A Mechanism for the Coexistence of Dust Dip and Supersoft X-Rays
  109. Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary System
  110. Unravelling the Asphericities in the Explosion and Multifaceted Circumstellar Matter of SN 2023ixf
Katsura Matsumoto

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