The evolution of the universe illuminated by gamma-ray bursts

• Project/Area Number: 17K14255
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2018-2020); National Astronomical Observatory of Japan (2017)
• Principal Investigator: Niino Yuu 東京大学, 大学院理学系研究科(理学部), 特任助教 (50632163)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Discontinued (Fiscal Year 2020)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: ガンマ線バースト / 突発天体 / 光学赤外線天文学 / 理論天文学

Outline of Final Research Achievements

Long gamma-ray bursts (GRBs) are unprecedented laboratory of high-energy physics and probe toward the high-redshift universe. However, there are still many mysteries remain unsolved in the properties of GRBs. This study uncovers the connection between star-formation and occurrence of GRBs and the luminosity function of GRB optical afterglows in order to make GRBs a reliable probe toward the high-redshift universe.

Academic Significance and Societal Importance of the Research Achievements

GRBには、その特異な明るさから、直接観測の難しい宇宙初期の星・銀河生成を探る手がかりとなる期待がかかっている。しかし、GRB を星・銀河形成研究の指標として信頼性の高いものにするためには、GRBそのものの性質について解明すべき未解決問題が残されている。本研究はそれらの問題を解決し、GRBによる遠方宇宙研究の道を切り開くものである。

Research Products

• [Journal Article] Fast Radio Bursts’ Recipes for the Distributions of Dispersion Measures, Flux Densities, and Fluences (2018)
  • Author(s): Niino, Yuu
  • Journal Title: The Astrophysical Journal Volume: 858 Issue: 1 Pages: 4-4
  • DOI: 10.3847/1538-4357/aab9a9
  • Peer Reviewed
• [Journal Article] A search for optical transients associated with fast radio burst 150418†‡ (2018)
  • Author(s): Niino Yuu、Tominaga Nozomu、Totani Tomonori、Morokuma Tomoki、Keane Evan、Possenti Andrea、Sugai Hajime、Yamasaki Shotaro
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 70 Issue: 5 Pages: 1-5
  • DOI: 10.1093/pasj/psy102
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The redshift-selected sample of long gamma-ray burst host galaxies: The overall metallicity distribution at z < 0.4 (2017)
  • Author(s): Niino, Yuu; Aoki, Kentaro; Hashimoto, Tetsuya; Hattori, Takashi; Ishikawa, Shogo; Kashikawa, Nobunari; Kosugi, George; Onoue, Masafusa; Toshikawa, Jun; Yabe, Kiyoto
  • Journal Title: Publications of the Astronomical Society of Japan Volume: 69 Issue: 2 Pages: 27-37
  • DOI: 10.1093/pasj/psw133
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Fast radio bursts' recipes for the distributions of dispersion measures, flux densities, and fluences (2019)
  • Author(s): Yuu Niino
  • Organizer: Fast radio bursts and their possible neutron star origins
  • Int'l Joint Research
• [Presentation] A connection between Fast Radio Bursts and massive stars suggested by the statistical properties of FRB observables (2018)
  • Author(s): Yuu Niino
  • Organizer: MASSIVE STARS AND SUPERNOVAE
  • Int'l Joint Research
• [Presentation] Recipes for the statistical properties of Fast Radio Bursts (2018)
  • Author(s): 新納 悠
  • Organizer: マルチメッセンジャー天文学研究会
• [Presentation] 高速電波バースト分散度分布の作り方 (2017)
  • Author(s): 新納 悠
  • Organizer: 日本天文学会2017年秋季年会
• [Presentation] ガンマ線バーストの起源天体とその母銀河 (2017)
  • Author(s): 新納 悠
  • Organizer: ガンマ線バースト研究の新機軸
  • Invited
• [Remarks] Yuu NIINO's Researches
  • URL: http://www.ioa.s.u-tokyo.ac.jp/~yuuniino/
• [Remarks] http://www.ioa.s.u-tokyo.ac.jp/~yuuniino/