Project Assistant Professor (NAOJ fellow) KOKUBO, Mitsuru
Research Field
- Time-Domain Astronomy, Galactic Astronomy
Degree
- Ph. D in Astronomy, the University of Tokyo, 2017
Brief Introduction of Research
- Many astronomical phenomena appear as steady-state events when observed on human timescales. However, some astronomical objects exhibit dramatic changes over short timescales ranging from seconds to years. The exploration of such transient or long-term variability in astronomical objects is known as time-domain astronomy. I conduct observational and theoretical research in time-domain astronomy, focusing on extragalactic objects that exhibit multi-wavelength (X-ray, optical, and infrared) variability. In particular, my work centers on the study of active galactic nuclei (AGN) and supernovae.
Main Research Achievements
- Kokubo 2024, MNRAS, 529, 2131 "Rayleigh and Raman scattering cross-sections and phase matrices of the ground-state hydrogen atom, and their astrophysical implications"
- Kokubo 2022, MNRAS, 515, 110 "Multiple giant eruptions and X-ray emission in the recoiling AGN/LBV candidate SDSS1133"
- Kokubo & Minezaki 2020, MNRAS, 491, 4615 "Rapid luminosity decline and subsequent reformation of the innermost dust distribution in the changing-look AGN Mrk 590"
- Kokubo et al. 2019, ApJ, 872, 135 "A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta-CSM Interaction Region and Hot Dust Emission from Newly Formed Dust"
- Kokubo 2018, PASJ, 70, 97 "Constraints on accretion disk size in the massive type 1 quasar PG 2308+098 from optical continuum reverberation lags"
- kokubo et al. 2017, ApJ, 844, 95 "Hα Intensity Map of the Repeating Fast Radio Burst FRB 121102 Host Galaxy from Subaru/Kyoto 3DII AO-assisted Optical Integral-field Spectroscopy"
Academic Society
- The Astronomical Society of Japan
Academic Award
Other Activity
- Part-time Lecturer at Keio University (Earth and Environmental Science II)
Contact us
