Publications

Papers

1. Ko, T., Hirai, R., Sasaoka, T., & Shigeyama, T. 2025, "Delayed Wind Onset in Pa 30, the Remnant of Type Iax SN 1181",accepted by PASJ (NASA/ADS, arXiv)

2. Ko, T., Kinugawa, T., Tsuna, D., Hirai, R., & Takei, Y. 2025, "Population Synthesis Study on the Binary Origin of Type Ibn Supernovae", Monthly Notices of the Royal Astronomical Society, Volume 541, Issue 4, (NASA/ADS, arXiv)

3. Ko, T., Suzuki, H., Kashiyama, K., Tanaka, T., Uchida, H., Tsuna, D., Fujisawa, K., Bamba, A., & Shigeyama, T. 2024, "A dynamical model for IRAS 00500+6713: the remnant of a type Iax supernova SN 1181 hosting a double degenerate merger product WD J005311",  The Astrophysical Journal, 969, 116 (NASA/ADS, arXiv)

4. Ko, T., Tsuna, D., Hatsukade, B., & Shigeyama, T. 2024, "Radio Emission from SN 1181 Hosting a White Dwarf Merger Product", Publications of the Astronomical Society of Japan, Volume 76, Issue 3, June 2024, Pages 475–482 (NASA/ADS, arXiv)

5. Takei, Y., Tsuna, D., Ko, T., & Shigeyama, T. 2023, "Simulating Hydrogen-poor Interaction-Powered Supernovae with CHIPS",  The Astrophysical Journal, 961,  67(NASA/ADS, arXiv)

6. Ko, T., Fujisawa, K., & Shigeyama, T. 2022, "Self-Similar solution of rotating wind on its equatorial plane", The Astrophysical Journal, 941,  38 (NASA/ADS, arXiv)

7. Ko, T., Tsuna, D., Takei, Y., & Shigeyama, T. 2022, "Eruption of the Envelope of Massive Stars by Energy Injection with Finite Duration",  The Astrophysical Journal, 930, 168(NASA/ADS, arXiv)

8. Takei, Y., Tsuna, D., Kuriyama, N., Ko, T., & Shigeyama, T. 2022, "CHIPS: Complete History of Interaction-Powered Supernovae",  The Astrophysical Journal, 929, 177(NASA/ADS, arXiv)

Accepted Proposal

1. Suzuki, H., Ko, T. et. al., Chandra Proposal ID #27500109 "Resolving the nature of a merger-made white dwarf inside the remnant of SN 1181"  (39 ks, $29,030)

2. Ko, T. et. al.,VLA/25B-120 "Resolving the nature of a merger-made white dwarf inside the remnant of SN 1181"  (8.2 hour) 

3. Ko, T. et. al.,VLA/24B-095 "Resolving the nature of a merger-made white dwarf inside the remnant of SN 1181"  (10 hour)

4. Ko, T. et. al., Subaru Service Program (S24B0156S), Rank-A  (4 hour)

Research funding (~ 25,000,000 jpy in 5 year)

1. Suzuki, H., Ko, T. et. al., Chandra Proposal ID #27500109, $ 29,030 (corresponds to ~ 4,500,000 jpy)

2. Ko, T., Enrico Fermi Fellow, € 999,999 in total (corresponds to ~ 18,000,000 jpy)

3. Ko, T., JSPS (DC2), ¥2,800,000 in total

4. Ko, T., JRA, ¥500,000 in total