Method of Gravitational Wave Search Based on Adaptive Time-Frequency Analysis
| Project/Area Number |
26800129
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
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| Research Collaborator |
OOHARA Ken-ichi
KANEYAMA Masato
SAKAI Kazuki
SASAKI Yukitsugu
UEKI Satoshi
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 重力波 / 宇宙物理 / 計算物理 / 相対論 / 信号処理 |
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| Outline of Final Research Achievements |
The Hilbert-Huang transform (HHT) analysis has been developed as a method for time series analysis of nonlinear and nonstationary data, and it enables us to perform a high resolution time frequency analysis of signals with strong frequency modulation by evaluating the instantaneous variation of amplitude and frequency of data. Using the HHT, we analyze gravitational waves from late inspiral, merger, and post-merger phases of binary neutron stars (BNS) coalescence, computed by a general relativistic numerical simulation. We find that we can clearly observe the time evolution of the instantaneous frequency of the post-merger waveforms. This allows us to constrain the equation of state of neutron stars and to evaluate the radius with a few hundred meters accuracy if BNS coalescences occur within 10 Mpc.
Moreover, we confirm the effectiveness of HHT by using real KAGRA test observation data.
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Report
(4 results)
Research Products
(70 results)
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[Presentation] 計算機制御における評価システムの開発2016
Author(s)
佐々木幸次, 高橋弘毅, 三代浩世希, 上泉眞裕, 粟井恭輔, 三代木伸二, 山本尚弘, 苔山圭以子, 宮川治
Organizer
日本物理学会（秋）
Place of Presentation
宮崎大学 木花キャンパス （宮崎県・宮崎市）
Year and Date
2016-09-21
Related Report
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[Presentation] Environmental Monitoring System in KAGRA2016
Author(s)
Yukitsugu Sasaki, Keiko Kokeyama, Osamu Miyakawa, Ayaka Shoda, Satoshi Ueki, Hirotaka Takahashi
Organizer
The eleventh International Conference on Innovative Computing, Information and Control (ICICIC2016)
Place of Presentation
Harbin (China)
Year and Date
2016-08-15
Related Report
Int'l Joint Research
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[Presentation] Status of iKAGRA hardware injection2016
Author(s)
T.Yokozawa, Y.Inoue, N.Kanda, K.Kokeyama, O.Miyakawa, K.Sakai, H.Tagoshi, H.Takahashi, S.Tsuchida, T.Yokozawa, H.Yuzurihara
Organizer
The 1st International Meeting on KAGRA
Place of Presentation
Daejon (Korea)
Year and Date
2016-06-24
Related Report
Int'l Joint Research
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[Presentation] iKAGRAデータ転送・保管システムの開発 II（ソフトウエア開発）2015
Author(s)
神田展行, 大原謙一, 伊藤洋介, 植木聡史, 金山雅人, 佐々木幸次, 高橋弘毅, 田越秀行, 田中一幸, 端山和大, 平沼悠太, 三代木伸二, 山本尚弘, 譲原浩貴
Organizer
日本物理学会（秋）
Place of Presentation
大阪市立大学杉本キャンパス（大阪府・大阪市）
Year and Date
2015-09-27
Related Report
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[Presentation] Hilbert-Huang Transform in Search for Gravitational waves2014
Author(s)
Hirotaka Takahashi, Satoshi Ueki, Yukitsugu Sasaki, Yoshihisa Kon, Ken-ichi Oohara, Masato Kaneyama, Takashi Wakamatsu, Jordan B. Camp
Organizer
The 24th workshop on General Relativity and Gravitation in Japan (JGRG24)
Place of Presentation
IPMU
Year and Date
2014-11-10 – 2014-11-14
Related Report
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