2022 Fiscal Year Research-status Report
Fast Transient Study with Deep-Imaging Surveys and Synergistic Observations
| Project/Area Number |
22K14069
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
姜 継安 国立天文台, 科学研究部, 特任研究員 (00846503)
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| Project Period (FY) |
2022-04-01 – 2027-03-31
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| Keywords | Supernova / Observation / Transient / Survey / Time-domain |
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| Outline of Annual Research Achievements |
A series of observations were carried out with Japanese observing facilities (e.g., Subaru/HSC, Seimei/TriCCS) in FY2022. A dozen of early-phase supernovae have been discovered and follow-up observations have been carried out via international collaborations successfully.
With a promising number of early-phase type Ia supernovae discovered in FY2022, the long-standing progenitor and explosion issues of type Ia supernovae can be further investigated. Moreover, over ten early-phase core-collapse supernovae and two fast blue ultra-luminous transient candidates have been successfully discovered in the 2022 observing campaign of our survey project (MUSSES). Total five papers related to different kinds of fast transients have been published in FY2022.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
A promising number of fast transients have been successfully discovered. By combining the current sample with early-phase supernovae discovered in the future observations, further understandings of the progenitor and explosion physics of supernovae can be achieved through statistical analysis. One scientific paper with data taken from Subaru has been published and a few more papers are in preparation, indicating the great advantage of carrying out not only supernova but other transient studies through our project. Moreover, several papers by collaborating with other observing facilities have been published and more scientific outputs can be expected once scheduled observations with the next generation ground-based and space-borne survey facilities are successfully carried out in FY2023.
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| Strategy for Future Research Activity |
Given the great advantage of studying fast transients with Japanese wide-field survey facilities, we plan to keep carrying out survey observations with Subaru/Hyper Suprime-Cam to study the nature of fast transients. At the meanwhile, international collaborations with upcoming survey facilities such as the 2.5-m Wide Field Survey Telescope and Einstein Probe, which are designed to study fast transients that show distinct variance in hours, minutes, or even seconds at different wavelength ranges. The origin of most previously discovered fast transients are still under debate and we expect to find hundreds of fast transients in the next few years. The great number of fast transients in the coming years will make our team a leading role of carrying out related studies in the world.
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[Journal Article] MUSSES2020J: The Earliest Discovery of a Fast Blue Ultraluminous Transient at Redshift 1.0632022
Author(s)
Jiang Ji-an, Yasuda Naoki, Maeda Keiichi, Tominaga Nozomu, Doi Mamoru, Ivezic Zeljko, Yoachim Peter, Uno Kohki, Moriya Takashi J., Kumar Brajesh, Pan Yen-Chen, Tanaka Masayuki, Tanaka Masaomi, Nomoto Ken’ichi, Jha Saurabh W., Ruiz-Lapuente Pilar, Jones David, Shigeyama Toshikazu, Suzuki Nao, Kokubo Mitsuru, et al.
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Journal Title
The Astrophysical Journal Letters
Volume: 933
Pages: L36～L36
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A repeating fast radio burst associated with a persistent radio source2022
Author(s)
Niu C.-H., Aggarwal K., Li D., Zhang X., Chatterjee S., Tsai C.-W., Yu W., Law C. J., Burke-Spolaor S., Cordes J. M., Zhang Y.-K., Ocker S. K., Yao J.-M., Wang P., Feng Y., Niino Y., Bochenek C., Cruces M., Connor L., Jiang J.-A., Dai S., Luo R., Li G.-D., Miao C.-C., Niu J.-R., Anna-Thomas R., et al.
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Journal Title
Nature
Volume: 606
Pages: 873～877
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Deep Simultaneous Limits on Optical Emission from FRB 20190520B by 24.4 fps Observations with Tomo-e Gozen2022
Author(s)
Niino Yuu, Doi Mamoru, Sako Shigeyuki, Ohsawa Ryou, Arima Noriaki, Jiang Ji-an, Tominaga Nozomu, Tanaka Masaomi, Li Di, Niu Chen-Hui, Tsai Chao-Wei, Kobayashi Naoto, Takahashi Hidenori, Kondo Sohei, Mori Yuki, Aoki Tsutomu, Arimatsu Ko, Kasuga Toshihiro, Okumura Shin-ichiro
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Journal Title
The Astrophysical Journal
Volume: 931
Pages: 109～109
DOI
Peer Reviewed / Open Access / Int'l Joint Research
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