Study of the possible origin of radio transients by high accurate radio observation

2012 Fiscal Year Final Research Report

• Project/Area Number: 22740130
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Yamaguchi University (2011-2012); National Astronomical Observatory of Japan (2010)
• Principal Investigator: NIINUMA Kotaro 山口大学, 大学院・理工学研究科, 助教 (30434260)
• Project Period (FY): 2010 – 2012
• Keywords: 電波天文学 / VLBI

Research Abstract

Development of the automatic data reduction and detected signal evaluation system in Nasu observatory are progressed more than the one was expected, although preparing the framework of monitor of transient phenomena between Nasu observatory and the Japanese VLBI network (JVN) was more delayedthan originally scheduled. Snap-shot observations for about 900 radio sources with high sensitivity VLBI system in using JVN were carried out to start-up these system. Also, we succeeded to conduct a quick follow-up observation for the transient flare phenomenon from an active galactic nucleus in 2010 using JVN.

Research Products

• [Journal Article] Rapid Fringe Detection Technique for Discovering Radio Transients in Nasu Drift-scan Data (2013)
  • Author(s): T. Tanaka, T. Nakamizo, T. Aoki, S. Kida, K. Asuma, K. Konishi, K. Niinuma, and T. Daishido
  • Journal Title: Publications of the Astronomical Society of the Pacific Volume: (in press)
  • Peer Reviewed
• [Journal Article] Possible Detection of Apparent Superluminal inward motion in Markarian 421 after the Giant X-ray are in February, 2010 (2012)
  • Author(s): K. Niinuma, M. Kino, H. Nagai, N. Isobe, K. E. Gabanyi, K. Hada, S. Koyama, T. Oyama, and, K. Fujisawa
  • Journal Title: The Astrophysical Journal Volume: Vol. 759 Pages: 84
  • DOI: DOI:10.1088/0004-637x/759/2/84
  • 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 Pages: 616
  • DOI: 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 Pages: 371
  • DOI: DOI:10.1086/665596
  • Peer Reviewed
• [Journal Article] Proposal for Multi-Messenger Observations of Radio Transients by Nasu and Ligo-Virgo (2012)
  • Author(s): K. Hayama, K. Niinuma, and T. Oyama
  • Journal Title: IAU Symposium285 Volume: Vol. 7 Pages: 331
  • DOI: DOI:10.1017/S1743921312000968
  • Peer Reviewed
• [Journal Article] 高銀緯で発見された正体不明の電波バースト (2010)
  • Author(s): 新沼浩太郎
  • Journal Title: 天文月報(The Astronomical Herald) Volume: Vol. 103, No. 4 Pages: 256-262
  • URL: http://www.asj.or.jp/geppou/contents/2010_04.html
• [Presentation] 未同定γ線源の対応電波源サーベイによる光結合 VLBI の性能評価1 (2013)
  • Author(s): 新沼浩太郎他
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 埼玉大学(さいたま市)
  • Year and Date: 20130320-23
• [Presentation] Multi-messenger observations of radio transients using gravitational wave telescopes and the Nasu radio telescope (2012)
  • Author(s): 端山 和大 他
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 大分大学(大分市)
  • Year and Date: 20120919-21
• [Presentation] 相対論的ビーミング現象と時間空間信号処理 (2011)
  • Author(s): 大師堂経明 他
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学(鹿児島市)
  • Year and Date: 20110919-21
• [Presentation] WJN トランジェントフリンジの再解析II (2011)
  • Author(s): 青木貴弘 他
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 鹿児島大学(鹿児島市)
  • Year and Date: 20110919-21
• [Presentation] 那須パルサー観測所2素子干渉計用解析ソフトウェアの開発 (2011)
  • Author(s): 田中泰 他
  • Organizer: 日本天文学会春季年会
  • Place of Presentation: 筑波大学(つくば市)
  • Year and Date: 20110316-19
• [Presentation] Quick Follow-up Observation of the Largest X-ray Flare from the TeV blazar Mrk 421 (2010)
  • Author(s): K. Niinuma et al
  • Organizer: The 25th Texas Symposium on Relativistic Astrophysics
  • Place of Presentation: Heidelberg, Germany
  • Year and Date: 20101206-10
• [Presentation] Japanese VLBI Network (JVN) によるTeVγ線ブレーザーMrk421 の大規模 X 線フレアの追観測 (2010)
  • Author(s): 新沼浩太郎 他
  • Organizer: VLBI懇談会シンポジウム
  • Place of Presentation: 茨城大学宇宙電波間(高萩市)
  • Year and Date: 20101201-03
• [Presentation] 高速 AD と短時間天体現象解析システム (2010)
  • Author(s): 大師堂経明 他
  • Organizer: 日本天文学会秋季年会
  • Place of Presentation: 金沢大学(金沢市)
  • Year and Date: 20100922-24