TAMA300による重力波探査

• Project/Area Number: 14047219
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: 藤本 眞克 国立天文台, 光赤外研究部, 教授 (90107475)
• Co-Investigator(Kenkyū-buntansha): 高橋 竜太郎 国立天文台, 光赤外研究部, 主任研究員 (60270451) ; 新井 宏二 国立天文台, 光赤外研究部, 主任研究員 (50321584)
• Project Period (FY): 2002 – 2005
• Project Status: Completed (Fiscal Year 2005)
• Budget Amount: ¥305,000,000 (Direct Cost: ¥305,000,000); Fiscal Year 2005: ¥69,100,000 (Direct Cost: ¥69,100,000); Fiscal Year 2004: ¥81,000,000 (Direct Cost: ¥81,000,000); Fiscal Year 2003: ¥77,900,000 (Direct Cost: ¥77,900,000); Fiscal Year 2002: ¥77,000,000 (Direct Cost: ¥77,000,000)
• Keywords: 重力波天文学 / レーザー干渉計 / 重力波検出

Research Abstract

TAMA300の低周波帯における感度向上と運転動作の安定性向上をめざして、低周波防振装置SASの導入を開始した。また、TAMA300の性能向上に向け、散乱光雑音への対策、デジタル制御の導入、バックアップ用レーザー光源の開発を行った。実験に並行して、これまでに取得されたTAMA300のデータやLIGO干渉計との同時観測データを用いた各種重力波源の探査解析を進め、いくつかの結果を公表した。具体的には、
1.低周波防振SASを一つの干渉計ミラー用防振系に導入し、機械系の調整と制御系のテストの後、特性評価により各モードの共振がうまく制動されていることを確認した。つづいて干渉計全体を動作させ感度スペクトルを取ることで、SAS導入による不都合が現れていないことが確認できた。今後、順次SAS導入を進める予定である。
2.TAMA300の散乱光雑音への対策として、真空外の光学ベンチの防音化、光検出部の大口径化と真空対応化を進めた。また、干渉計制御のデジタル化に向けた試行を行って、動作引き込みの高速化やフレキシブルな制御系の実現が可能なことが確認できた。アデレード大学との共同研究で開発してきたTAMA300用10Wレーザーを、従来の光源に隣接してバックアップ用光源として設置した。
3.ブラックホールの準固有振動や超新星爆発からの重力波を検出する解析法を開発し、これまでに得られた300時間を超えるTAMA300の観測データに適用することで、重力波発生頻度の上限値を得た。また、米国LIGO干渉計との同時観測データの解析によって、バースト重力波に対する上限値を求めた。

Research Products

• [Journal Article] Online monitoring of alignment noises in TAMA300 (2006)
  • Author(s): D.Tatsumi et al.
  • Journal Title: Journal of Physics : Conference Series 32 Pages: 94-98
• [Journal Article] Monitoring non-stationary burst-like signals in an interferometric gravitational wave detector (2006)
  • Author(s): K.Hayama, M.-K.Fujimoto
  • Journal Title: Classical and Quantum Gravity 23
• [Journal Article] Veto analysis for gravitational wave burst signals in TAMA300 data using an ALF filter (2006)
  • Author(s): T.Akutsu et al.
  • Journal Title: Classical and Quantum Gravity 23
• [Journal Article] Upper limits on gravitational-wave bursts radiated from stellar-core collapses in our galaxy (2006)
  • Author(s): M.Ando et al.
  • Journal Title: Classical and Quantum Gravity 23
• [Journal Article] Calibration of TAMA300 in time domain (2005)
  • Author(s): S.Telada et al.
  • Journal Title: Classical and Quantum Gravity 22
• [Journal Article] Black-hole ringdown search in TAMA300 : matched filtering and event selections (2005)
  • Author(s): Y.Tsunesada et al.
  • Journal Title: Classical and Quantum Gravity 22
• [Journal Article] Burst wave analysis of TAMA300 data with the ALF filter (2005)
  • Author(s): T.Akutsu et al.
  • Journal Title: Classical and Quantum Gravity 22
• [Journal Article] UPPER LIMITS FROM THE LIGO AND TAMA DETECTORS ON THE RATE OF GRAVITATIONAL-WAVE BURSTS. (2005)
  • Author(s): B.Abbott et al.
  • Journal Title: Physical Review D72 Pages: 122004-122004
• [Journal Article] OBSERVATION RESULTS BY THE TAMA300 DETECTOR ON GRAVITATIONAL WAVE BURSTS FROM STELLAR-CORE COLLAPSES (2005)
  • Author(s): M.Ando et al.
  • Journal Title: Physical Review D71 Pages: 82002-82002
• [Journal Article] ON DETECTION OF BLACK HOLE QUASI-NORMAL RINGDOWNS : DETECTION EFFICIENCY AND WAVEFORM PARAMETER DETERMINATION IN MATCHED FILTERING (2005)
  • Author(s): Y.Tsunesada et al.
  • Journal Title: Physical Review D71 Pages: 103005-103005
• [Journal Article] Analysis for burst gravitational waves with TAMA300 data (2004)
  • Author(s): Ando, M.
  • Journal Title: Class.Quantum Grav. 21
• [Journal Article] Analysis methods for burst gravitational waves with TAMA data (2004)
  • Author(s): Ando, M.
  • Journal Title: Class.Quant.Grav. 21
• [Journal Article] Application of Diamond-Like Carbon (DLC) coatings for gravitational wave detectors (2004)
  • Author(s): Takahashi, R.
  • Journal Title: Vacuum 73 Pages: 145-148
• [Journal Article] Coincidence analysis to search for inspiraling compact binaries using TAMA300 and LISM data (2004)
  • Author(s): Takahashi, R.
  • Journal Title: Physical Review D70
• [Journal Article] Direct Measurement of Scattered Light Effect on the Sensitivity in TAMA300 (2004)
  • Author(s): Takahashi, R.
  • Journal Title: Phys.Rev. D70
• [Journal Article] ONLINE CALIBRATION AND PRE-PROCESSING OF TAMA DATA (2004)
  • Author(s): Tatsumi, D.
  • Journal Title: Class.Quant.Grav. 21
• [Journal Article] Search for gravitational waves from black-hole ringdown using TAMA300 data (2004)
  • Author(s): Tsunesada, Y.
  • Journal Title: Class.Quantum Grav. 21 Pages: 703-708
• [Journal Article] Status of TAMA300 (2004)
  • Author(s): Takahashi, R.
  • Journal Title: Class.Quantum Grav. 21
• [Journal Article] ULTRASTABLE PERFORMANCE OF AN UNDERGROUND BASED LASER INTERFEROMETER OBSERVATORY FOR GRAVITATIONAL WAVES (2004)
  • Author(s): Sato, S.
  • Journal Title: Physical Review D69 Pages: 102005-102005
• [Journal Article] Use of a Wavelet-Based Method to Search for Gravitational Wave Bursts (2004)
  • Author(s): Hayama, K.
  • Journal Title: Progress of Theoretical Physics 111, No6 Pages: 807-819
• [Journal Article] 重力波計測と気体分子密度のゆらぎ (2004)
  • Author(s): 高橋竜太郎
  • Journal Title: 真空 47 Pages: 696-701
  • NAID: 10013667962
• [Journal Article] Plans for the LIGO-TAMA joint search for gravitational wave bursts (2004)
  • Author(s): Sutton, P.
  • Journal Title: Class.Quantum Grav. 21 Pages: 1801-1808
• [Publications] S.Nagano et al.: "Development of a multistage laser frequency stabilization for an interferometric gravitational-wave detector"Rev.Sci.Inst.. 73. 4176-4183 (2003)
• [Publications] M.Ando et al.: "Methods to characterize non-Gaussian noise in TAMA"Class.Quantum Grav.. 20. S697-S709 (2003)
• [Publications] K.Kuroda et al.: "Current status of large-scale cryogenic gravitational wave telescope"Class.Quantum Grav.. 20. S871-S884 (2003)
• [Publications] R.Takahashi et al.: "Operational status of TAMA300"Class.Quantum Grav.. 20. S593-S598 (2003)
• [Publications] R.Takahashi et al.: "Measurement of Scattered Light Effect on the Sensitivity in TAMA300"Proc.of 28th International Cosmic Ray Conference (Tsukuba), Universal Academy Press (Tokyo). 3119-3122 (2003)
• [Publications] R.Takahashi et al.: "Application of Diamond-Like Carbon (DLC) coatings for gravitational wave detectors"Vacuum. 73. 145-148 (2004)
• [Publications] K.Arai: "Sensing and controls for power-recycling of TAMA300"Class. Quantum Grav.. 19. 1843-1848 (2002)
• [Publications] R.Takahashi: "Improvement of Vibration Isolation System for TAMA300"Class. Quantum Grav.. 19. 1599-1604 (2002)
• [Publications] Z.H.Zhu: "Cardassian Expansion : Constraints from Compact Radio Source Angular Size Versus Redshift Data"Astrophys.J.. 581. 1-4 (2002)
• [Publications] T.Tomaru: "Evaluation of the performance of polished mirror surfaces for the TAMA gravitational wave detector by use of wave-front tracing simulation"Appl.Opt. OT. 41,28. 5913-5920 (2002)
• [Publications] R.Takahashi: "Direct measurement of residual gas effect on the sensitivity in TAMA300"J.Vac.Sci.Technol.. A20. 1237-1241 (2002)
• [Publications] S.Nagano: "Development of a light source with an injection-locked Nd : YAG laser and a ring-mode cleaner for the TAMA300 gravitational-wave detector"Rev.Sci.Inst.. 73. 2136-2142 (2002)
• [Publications] R.Takahashi: "Vacuum-compatible vibration stack for an interferometric gravitationl wave detector TAMA300"Rev.Sci.Inst.. 73. 2428-2433 (2002)
• [Publications] Z.H.Zhu: "Constraints on Cardassian Expansion from Distant Type Ia Supernovae"Astrophys.J.. 585. 52-56 (2003)