Takashi
Nagao
Tuorla Observatory
PhD
Contact
Biography
I am a postdoctoral researcher at University of Turku in Finland. I have obtained my PhD degree at Kyoto University in Japan on March 2019. After this, I moved to European Southern Observatory as a JSPS Overseas Research Fellow, and spent time there until November 2020. Then, I came to University of Turku.
Research
I am working on supernovae using physics of radiation and fluid as well as using spectroscopic and polarimetric observations. "How do massive stars die?", answering this question is one of my research goals.
Publications
SN 2023gpw: Exploring the diversity and power sources of hydrogen-rich superluminous supernovae (2026)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
The hydrogen-free circumstellar interaction in the Type Ib supernova 2021efd: A clue to the mechanism of the helium-layer stripping (2026)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Formation of Circumstellar Material during Double-white-dwarf Mergers and the Early Excess Emissions in Type Ia Supernovae (2026)
Astrophysical Journal
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Peculiar SN Ic 2022esa: An explosion of a massive Wolf–Rayet star in a binary as a precursor to a BH–BH binary? (2026)
Publications- Astronomical Society of Japan
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
The bright long-lived Type II SN 2021irp powered by aspherical circumstellar material interaction I. Revealing the energy source with photometry and spectroscopy (2025)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Observational diversity of bright long-lived Type II supernovae (2025)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
NUTS Transient Classification Report for 2025-03-18 (2025)
(D2 Artikkeli ammatillisessa kokoomateoksessa)Optical evolution of AT 2024wpp: the high-velocity outflows in Cow-like transients are consistent with high spherical symmetry (2025)
Monthly Notices of the Royal Astronomical Society
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
The bright long-lived Type II SN 2021irp powered by aspherical circumstellar material interaction: II. Estimating the CSM mass and geometry with polarimetry and light curve modeling (2025)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
The ambiguous AT2022rze: changing-look AGN mimicking a supernova in a merging galaxy system (2025)
Monthly Notices of the Royal Astronomical Society
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )