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
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 )
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 )
Spectropolarimetry of a Nuclear Transient AT2023clx: Revealing the Geometrical Alignment between the Transient Outflow and the Nuclear Dusty Region (2025)
Astrophysical Journal Letters
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Evidence for bipolar explosions in Type IIP supernovae (2024)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Spectropolarimetry of Type II supernovae: II. Intrinsic supernova polarization and its relation to photometric and spectroscopic properties (2024)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
The aspherical explosions of the 03fg-like Type Ia supernovae 2021zny and 2022ilv revealed by polarimetry (2024)
Astronomy and Astrophysics
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )
Intermediate-luminosity Type IIP SN 2021gmj : a low-energy explosion with signatures of circumstellar material (2024)
Monthly Notices of the Royal Astronomical Society
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )