Development of Observation System for Discovering Millisecond Radio Transients and Unveiling the Origins

• Project/Area Number: 24654049
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Waseda University
• Principal Investigator: AOKI Takahiro 早稲田大学, 教育・総合科学学術院, 助手 (30624845)
• Co-Investigator(Renkei-kenkyūsha): TANAKA Tai 早稲田大学, 先進理工学研究科, 学生 ; TSUDA Tomofumi 早稲田大学, 先進理工学研究科, 学生 ; NAKAO Ryota 早稲田大学, 教育学部, 学生 ; KUJIRAI Kenji 早稲田大学, 教育学部, 学生 ; DAISHIDO Tsuneaki 早稲田大学, 教育総合科学学術院, 教授 (10112989)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 突発現象 / 電波天文学 / 分光器 / Fast Radio Burst / FRB / GPU / 電波トランジェント / 突発天体 / 電波 / 信号処理 / 光度変動

Research Abstract

This research aimed to unveil the origins of astronomical transient phenomena in radio frequency band. In order to realize that, we developed observation system in our Nasu Radio Observatory and succeeded at discovering the profile of previously reported radio transients using the system. Moreover, we were able to narrow down the candidates for the radio transients. These results will promote radio observation of transient phenomena by the Square Kilometre Array and other facilities.

Research Products

• [Journal Article] Reliability of Radio Transients Detected in the Nasu Sky Survey (2014)
  • Author(s): Aoki, Takahiro; Tanaka, Tai; Niinuma, Kotaro; Takefuji, Kazuhiro; Kida, Sumiko, 他4名
  • Journal Title: The Astrophysical Journal Volume: Volume 781、issue 1、id10 Issue: 1 Pages: 12-12
  • DOI: 10.1088/0004-637x/781/1/10
  • Peer Reviewed
• [Journal Article] Rapid Fringe Detection Technique for Discovering Radio Transients in Nasu Drift-scan Data (2013)
  • Author(s): T. Tanaka, T. Nakamizo, T. Aoki, 他5名
  • Journal Title: Publications of the Astronomical Society of the Pacific Volume: Vol. 125 Issue: 927 Pages: 557-564
  • DOI: 10.1086/670767
  • Peer Reviewed
• [Journal Article] Method for Finding Variable Radio Sources in Drift-Scan Interferometric Data from the Nasu Observatory (2012)
  • Author(s): T. Tanaka, T. Nakamizo, T. Aoki, S. Kida, K. Asuma, A. Imai, N. Furukawa, R. Hiruma, N. Matsumura, .K. Takefuji. K. Niinuma, and T. Daishido
  • Journal Title: Publications of the Astronomical Society of the Pacific Volume: Vol. 124 Issue: 916 Pages: 616-616
  • DOI: 10.1086/666592
  • Peer Reviewed
• [Journal Article] Calculation of False-Detection Rate for Nasu Interferometric Sky Survey (2012)
  • Author(s): T. Aoki, T. Tanaka, K. Niinuma, K. Asuma, S. Kida, T. Nakamizo, N. Furukawa, J. Ikouga, K. Odai, Y. Yamada, R. Hiruma, T. Endo, K. Konishi, T. Tsuda, and T. Daishido
  • Journal Title: Publications of the Astronomical Society of the Pacific Volume: Vol. 124 Issue: 914 Pages: 371-371
  • DOI: 10.1086/665596
  • NAID: 120004724623
  • Peer Reviewed
• [Presentation] 長寿命電波バーストの観測可能性と,那須観測所における短寿命電波バーストの観測計画 (2014)
  • Author(s): 青木貴弘
  • Organizer: 宇宙線研究所共同利用研究会
  • Place of Presentation: 東京大学
  • Year and Date: 2014-03-11
• [Presentation] 長寿命電波バーストの観測可能性と、那須観測所における短寿命電波バーストの観測計画 (2014)
  • Author(s): 青木貴弘
  • Organizer: 宇宙における粒子加速と電波帯域での突発現象
  • Place of Presentation: 東京大学
  • Invited
• [Presentation] Dynamic Radio Sky Survey Using SKA (2013)
  • Author(s): T. Aoki, K. Sugisawa, N. Nomura, 他4名
  • Organizer: SKA Science Workshop in East Asia 2013
  • Place of Presentation: 名古屋大学
  • Year and Date: 2013-06-05
• [Presentation] 那須観測所における電波トランジェント発見速報システムの開発状況 (2012)
  • Author(s): 青木貴弘, 古川匠哉, 貴田寿美子, 他7名
  • Organizer: 日本天文学会
  • Place of Presentation: 大分大学
  • Year and Date: 2012-09-20