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Fast Transient Study with Deep-Imaging Surveys and Synergistic Observations

Research Project

Project/Area Number 22K14069
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 16010:Astronomy-related
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

姜 継安  国立天文台, 科学研究部, 特別客員研究員 (00846503)

Project Period (FY) 2022-04-01 – 2027-03-31
Project Status Granted (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2026: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2025: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2024: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
KeywordsSupernova / Observation / Transient / Survey / Time-domain / Time-domain astronomy / Wide-field survey / Multi-wavelength
Outline of Research at the Start

A transient with fast brightness variance in UV/optical wavelengths ("fast transient") is of great interest in time-domain astronomy as their extreme properties not only relate to various aspects of astrophysics but help us to understand fundamental issues in cosmology. By carrying out innovative survey projects that are optimized to study fast transients with world-class survey facilities and follow-up network, we will carry out systematical studies of fast transients obtained from ongoing and forthcoming surveys. New findings of these intriguing transients can be expected in the near future.

Outline of Annual Research Achievements

A series of observations were carried out with worldwide observing facilities (e.g., 8.2m Subaru/HSC, 3.8m Seimei/TriCCS, 3.5m ARC, 2.5m WFST) 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 FY2023, the long-standing progenitor and explosion issues of type Ia supernovae have been further investigated. Moreover, a promising number of early-phase core-collapse supernovae and fast blue optical transients have been successfully discovered with the new survey facility WFST in FY2023. Total four papers related to fast transients and transient surveys have been published in FY2023.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole 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, a few papers by collaborating with other observing facilities have been published and more scientific outputs can be expected with the next generation ground-based (e.g. WFST) and space-borne survey facilities (e.g. EP) in FY2024.

Strategy for Future Research Activity

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 new generation survey facilities such as the 2.5-m Wide Field Survey Telescope (WFST) and Einstein Probe (EP), 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.

Report

(2 results)
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (11 results)

All 2024 2023 2022

All Journal Article (8 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results)

  • [Journal Article] AT 2023lli: A Tidal Disruption Event with Prominent Optical Early Bump and Delayed Episodic X-Ray Emission2024

    • Author(s)
      Huang Shifeng、Jiang Ning、Zhu Jiazheng、Wang Yibo、Wang Tinggui、Wang Shan-Qin、Gan Wen-Pei、Liang En-Wei、Qin Yu-Jing、Lin Zheyu、Xu Lin-Na、Cai Min-Xuan、Jiang Ji-an, et al.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 964 Issue: 2 Pages: L22-L22

    • DOI

      10.3847/2041-8213/ad319f

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Science with the 2.5-meter Wide Field Survey Telescope (WFST)2023

    • Author(s)
      Wang Tinggui、Liu Guilin、Cai Zhenyi、Geng Jinjun、Fang Min、He Haoning、Jiang Ji-an, et al.
    • Journal Title

      Science China Physics, Mechanics & Astronomy

      Volume: 66 Issue: 10 Pages: 1-48

    • DOI

      10.1007/s11433-023-2197-5

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Basic Survey Scheduling for the Wide Field Survey Telescope (WFST)2023

    • Author(s)
      Chen Yan-Peng、Jiang Ji-An、Luo Wen-Tao、Zheng Xian-Zhong、Fang Min、Yang Chao、Hong Yuan-Yu、Lv Zong-Fei
    • Journal Title

      Research in Astronomy and Astrophysics

      Volume: 24 Issue: 1 Pages: 015003-015003

    • DOI

      10.1088/1674-4527/ad07cd

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Initial flash and spectral formation of Type Ia supernovae with an envelope: applications to overluminous SNe Ia2023

    • Author(s)
      Maeda Keiichi, Jiang Ji-an, Doi Mamoru, Kawabata Miho, Shigeyama Toshikazu
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 521 Issue: 2 Pages: 1897-1907

    • DOI

      10.1093/mnras/stad618

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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、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 et al.
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 933 Issue: 2 Pages: L36-L36

    • DOI

      10.3847/2041-8213/ac7390

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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.
    • Journal Title

      Nature

      Volume: 606 Issue: 7916 Pages: 873-877

    • DOI

      10.1038/s41586-022-04755-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prospects of Searching for Type Ia Supernovae with 2.5-m Wide Field Survey Telescope2022

    • Author(s)
      Hu Maokai, Hu Lei, Jiang Ji-an, Xiao Lin, Fan Lulu, Wei Junjie, Wu Xuefeng
    • Journal Title

      Universe

      Volume: 9 Issue: 1 Pages: 7-7

    • DOI

      10.3390/universe9010007

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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
    • Journal Title

      The Astrophysical Journal

      Volume: 931 Issue: 2 Pages: 109-109

    • DOI

      10.3847/1538-4357/ac6be8

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Fast Transient Studies with Ongoing/Future Deep Imaging Surveys2022

    • Author(s)
      Ji-an Jiang
    • Organizer
      Exploring the Transient Universe
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] From Subaru/HSC to WFST: The Past, Present, and Future for Fast Transient Studies2022

    • Author(s)
      Ji-an Jiang
    • Organizer
      1st Finland-Japan bilateral meeting on extragalactic transients
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Fast Transient Studies with Subaru/HSC Deep Imaging Surveys2022

    • Author(s)
      Ji-an Jiang
    • Organizer
      NAOJ Seminar
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-04-19   Modified: 2024-12-25  

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