西澤 篤志ATSUSHI NISHIZAWA

Last Updated :2024/07/25

所属・職名
大学院先進理工系科学研究科　准教授
メールアドレス
atnishihiroshima-u.ac.jp

基本情報

学歴

  • 京都大学, 人間・環境学研究科, 2004年04月, 2009年03月

学位

  • 博士（人間・環境学）　(京都大学)
  • 修士（人間・環境学）　(京都大学)

担当主専攻プログラム

  • 物理学プログラム

研究分野

  • 数物系科学 / 物理学 / 素粒子・原子核・宇宙線・宇宙物理

研究キーワード

  • 重力理論の検証
  • 宇宙論
  • 重力波

所属学会

  • 日本物理学会
  • 日本天文学会

教育活動

授業担当

  1. 2024年, 学部専門, セメスター（前期）, 電磁気学演習
  2. 2024年, 学部専門, 通年, 自由課題研究
  3. 2024年, 学部専門, セメスター（前期）, 物理学特別講義（一般相対性理論）

研究活動

学術論文（★は代表的な論文）

  1. Sagnac-type neutron displacement-noise-free interferometeric gravitational-wave detector, Classical and Quantum Gravity, 41巻, 11号, 202406
  2. Gravitational-wave constraints on scalar-tensor gravity from a neutron star and black-hole binary GW200115, Physical Review D, 109巻, pp. 104072, 202405
  3. Search for Gravitational-wave Transients Associated with Magnetar Bursts in Advanced LIGO and Advanced Virgo Data from the Third Observing Run, The Astrophysical Journal, 966巻, pp. 137, 202405
  4. Gravitational-wave constraints on scalar-tensor gravity from a neutron star and black-hole binary GW200115, PHYSICAL REVIEW D, 109巻, pp. 104072, 202405
    DOIを用いた論文検索結果へのリンク
  5. Physically consistent gravitational waveform for capturing beyond general relativity effects in the compact object merger phase, PHYSICAL REVIEW D, 109巻, pp. 084058, 202404
    DOIを用いた論文検索結果へのリンク
  6. Physically consistent gravitational waveform for capturing beyond general relativity effects in the compact object merger phase, Physical Review D, 109巻, pp. 084058, 202404
  7. GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo during the Second Part of the Third Observing Run, Physical Review X, 13巻, pp. 041039, 202312
  8. Search for Gravitational Waves Associated with Fast Radio Bursts Detected by CHIME/ FRB during the LIGO–Virgo Observing Run O3a, The Astrophysical Journal, 955巻, pp. 155, 202310
  9. First results of axion dark matter search with DANCE, Physical Review D, 108巻, pp. 072005, 202310
  10. Overview of KAGRA : Data transfer and management, Progress of Theoretical and Experimental Physics, 2023巻, pp. 10A102, 202309
  11. Circular Polarization of the Astrophysical Gravitational Wave Background, Physical Review Letters, 131巻, pp. 041401, 202307
  12. Constraints on the Cosmic Expansion History from GWTC–3, The Astrophysical Journal, 949巻, pp. 76, 202306
  13. Observational constraint on axion dark matter in a realistic halo profile with gravitational waves, Physical Review D, 107巻, pp. 103516, 202305
  14. Distinguishing a stochastic gravitational-wave signal from correlated noise with joint parameter estimation: Fisher analysis for ground-based detectors, Physical Review D, 107巻, pp. 064055, 202303
  15. Noise subtraction from KAGRA O3GK data using Independent Component Analysis, Classical and Quantum Gravity, 40巻, pp. 085015, 202303
  16. Population of Merging Compact Binaries Inferred Using Gravitational Waves through GWTC-3, Physical Review X, 13巻, pp. 011048, 202303
  17. Search for subsolar-mass black hole binaries in the second part of Advanced LIGO's and Advanced Virgo's third observing run, Monthly Notices of the Royal Astronomical Society, 524巻, pp. 5984, 202302
  18. Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds, Physics Letters A, 458巻, pp. 128581, 202301
  19. Input optics systems of the KAGRA detector during O3GK, Progress of Theoretical and Experimental Physics, 2023巻, pp. 023F01, 202212
  20. Model-based Cross-correlation Search for Gravitational Waves from the Low-mass X-Ray Binary Scorpius X-1 in LIGO O3 Data, The Astrophysical Journal Letters, 941巻, pp. L30, 202212
  21. All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data, Physical Review D, 106巻, pp. 102008, 202211
  22. Observational constraint on axion dark matter with gravitational waves, Physical Review D, 106巻, pp. L081301, 202210
  23. Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data, Physical Review D, 106巻, pp. 062002, 202209
  24. Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data, Physical Review D, 106巻, pp. 042003, 202208
  25. Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs, The Astrophysical Journal, 935巻, pp. 1, 202208
  26. Narrowband Searches for Continuous and Long-duration Transient Gravitational Waves from Known Pulsars in the LIGO-Virgo Third Observing Run, The Astrophysical Journal, 932巻, pp. 133, 202206
  27. All-sky, all-frequency directional search for persistent gravitational waves from Advanced LIGO's and Advanced Virgo's first three observing runs, Physical Review D, 105巻, pp. 122001, 202206
  28. Performanceof theKAGRAdetectorduringthefirst joint observation with GEO600 (O3GK), Progress of Theoretical and Experimental Physics, 2023巻, pp. 10A101, 202206
  29. Neutron displacement noise-free interferometer for gravitational-wave detection, Physical Review D, 105巻, pp. 124017, 202206
  30. All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data, Physical Review D, 105巻, pp. 102001, 202205
  31. First joint observation by the underground gravitational-wave detector KAGRA with GEO 600, Prog. Theor. Exp. Phys., 2022巻, pp. 063F01, 202204
  32. Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift during the LIGO–Virgo Run O3b, The Astrophysical Journal, 928巻, pp. 186, 202204
  33. Search for scalar-tensor mixed polarization modes of gravitational waves, Physical Review D, 105巻, pp. 084019, 202204
  34. Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration, Physics Letters A, 441巻, pp. 128150, 202204
  35. The Current Status and Future Prospects of KAGRA, the Large-Scale Cryogenic Gravitational Wave Telescope Built in the Kamioka Underground, Galaxies, 10巻, pp. 63, 202204
  36. Constraints on dark photon dark matter using data from LIGO's and Virgo's third observing run, Physical Review D, 105巻, pp. 063030, 202203
  37. Early warning of precessing neutron-star black-hole binary mergers with the near-future gravitational- wave detectors, Monthly Notices of the Royal Astronomical Society, 512巻, pp. 3878, 202203
  38. Search for intermediate-mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo, Astronomy & Astrophysics, 659巻, pp. A84, 202203
  39. Search for continuous gravitational waves from 20 accreting millisecond x-ray pulsars in O3 LIGO data, Physical Review D, 105巻, pp. 022002, 202201
  40. All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run, Physical Review D, 104巻, pp. 122004, 202112
  41. All-sky search for long-duration gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run, Physical Review D, 104巻, pp. 102001, 202111
  42. Constraints from LIGO O3 Data on Gravitational-wave Emission Due to R-modes in the Glitching Pulsar PSR J0537–6910, The Astrophysical Journal, 922巻, pp. 71, 202111
  43. Searches for Continuous Gravitational Waves from Young Supernova Remnants in the Early Third Observing Run of Advanced LIGO and Virgo, The Astrophysical Journal, 921巻, pp. 80, 202111
  44. Impacts of overlapping gravitational-wave signals on the parameter estimation: Toward the search for cosmological backgrounds, Physical Review D, 104巻, pp. 044010, 202108
  45. Reduction of quantum noise using the quantum locking with an optical spring for gravitational wave detectors, Physics Letters A, 402巻, pp. 127365, 202106
  46. Early warning of precessing compact binary merger with third-generation gravitational-wave detectors, Physical Review D, 104巻, pp. 064013, 202109
  47. Upper limits on the isotropic gravitational-wave background from Advanced LIGO and Advanced Virgo's third observing run, Physical Review D, 104巻, pp. 022004, 202107
  48. Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs, Physical Review D, 104巻, pp. 022005, 202107
  49. All-sky search for continuous gravitational waves from isolated neutron stars in the early O3 LIGO data, Physical Review D, 104巻, pp. 082004, 202110
  50. Diving below the Spin-down Limit: Constraints on Gravitational Waves from the Energetic Young Pulsar PSR J0537-6910, The Astrophysical Journal Letters, 913巻, pp. L27, 202106
  51. Constraints on Cosmic Strings Using Data from the Third Advanced LIGO–Virgo Observing Run, Physical Review Letters, 126巻, pp. 241102, 202106
  52. Vibration isolation systems for the beam splitter and signal recycling mirrors of the KAGRA gravitational wave detector, Classical and Quantum Gravity, 38巻, pp. 065011, 202103
  53. Pure polarization test of GW170814 and GW170817 using waveforms consistent with modified theories of gravity, Physical Review D, 103巻, pp. 064037, 202010
  54. Optimization of quantum noise by completing the square of multiple interferometer outputs in quantum locking for gravitational wave detectors, Physics Letters A, 384巻, pp. 126626, 202009
  55. Overview of KAGRA: Calibration, detector characterization, physical environmental monitors, and the geophysics interferometer, Progress of Theoretical and Experimental Physics, 2021巻, pp. 05A102, 202102
  56. An Early-warning System for Electromagnetic Follow-up of Gravitational-wave Events, The Astrophysical Journal Letters, 905巻, pp. L25, 202012
  57. Overview of KAGRA: KAGRA science, Progress of Theoretical and Experimental Physics, 2020巻, pp. 05A103, 202008
  58. Overview of KAGRA: Detector design and construction history, Progress of Theoretical and Experimental Physics, 2020巻, pp. 05A101, 202008
  59. Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA, Physical Review D, 102巻, pp. 022008, 202007
  60. Cosmological evolution of viable models in the generalized scalar-tensor theory, Physical Review D, 102巻, pp. 024003, 202007
  61. Application of independent component analysis to the iKAGRA data, Progress of Theoretical and Experimental Physics, 2020巻, pp. 053F01, 202005
  62. An arm length stabilization system for KAGRA and future gravitational-wave detectors, Classical and Quantum Gravity, 37巻, pp. 035004, 202001
  63. Constraining extra gravitational wave polarizations with Advanced LIGO, Advanced Virgo, and KAGRA and upper bounds from GW170817, Physical Review D, 100巻, pp. 064010, 201909
  64. Generalized framework for testing gravity with gravitational-wave propagation. III. Future prospect, Physical Review D, 99巻, pp. 104038, 201905
  65. Convergence of Fourier-domain templates for inspiraling eccentric compact binaries, Physical Review D, 100巻, pp. 064006, 201909
  66. KAGRA: 2.5 generation interferometric gravitational wave detector, Nature Astronomy, 3巻, pp. 35, 201901
  67. Prospects for gravitational-wave polarization tests from compact binary mergers with future ground-based detectors, Physical Review D, 100巻, pp. 042001, 201908
  68. Parity-violating gravity and GW170817, Physical Review D, 98巻, pp. 124018, 201812
  69. Polarization test of gravitational waves from compact binary coalescences, Physical Review D, 98巻, pp. 022008, 201807
  70. Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector, Physical Review D, 97巻, pp. 122003, 201806
  71. ★, Generalized framework for testing gravity with gravitational-wave propagation. II. Constraints on Horndeski theory, Physical Review D, 97巻, pp. 104038, 201805
  72. ★, Generalized framework for testing gravity with gravitational-wave propagation. I. Formulation, Physical Review D, 97巻, pp. 104037, 201805
  73. Measurement of Hubble constant with stellar-mass binary black holes, Physical Review D, 96巻, pp. 101303(R), 201711
  74. Testing gravity with pulsar scintillation measurements, Physical Review D, 95巻, pp. 084049, 201704
  75. Constraining stellar binary black hole formation scenarios with eLISA eccentricity measurements, Monthly Notices of the Royal Astronomical Society, 465巻, pp. 4375, 201703
  76. Gravitational wave memory: A new approach to study modified gravity, Physical Review D, 94巻, pp. 104063, 201611
  77. eLISA eccentricity measurements as tracers of binary black hole formation, Physical Review D, 94巻, pp. 064020, 201609
  78. Detecting black-hole binary clustering via the second-generation gravitational-wave detectors, Physical Review D, 94巻, pp. 024013, 201607
  79. Constraining the propagation speed of gravitational waves with compact binaries at cosmological distances, Physical Review D, 93巻, pp. 124036, 201606
  80. Anisotropies of Gravitational-Wave Standard Sirens as a New Cosmological Probe without Redshift Information, Physical Review Letters, 116巻, pp. 121302, 201603
  81. Weak-value amplification beyond the standard quantum limit in position measurements, Physical Review A, 92巻, pp. 032123, 201509
  82. Search for an emission line of a gravitational wave background, Physical Review D, 91巻, pp. 122001, 201506
  83. ★, Measuring speed of gravitational waves by observations of photons and neutrinos from compact binary mergers and supernovae, Physical Review D, 90巻, pp. 044048, 201408
  84. Constraint on reheating after f(R) inflation from gravitational waves, Physical Review D, 89巻, pp. 063541, 201403
  85. Probing for massive stochastic gravitational-wave background with a detector network, Physical Review D, 88巻, pp. 064005, 201309
  86. ★, Beyond concordance cosmology with magnification of gravitational-wave standard sirens, Physical Review Letters, 110巻, pp. 151103, 201304
  87. Model-independent test of gravity with a network of ground-based gravitational-wave detectors, Physical Review D, 87巻, pp. 062003, 201303
  88. Reheating after f(R) inflation, Physical Review D, 86巻, pp. 083514, 201210
  89. Weak-value amplification in a shot-noise-limited interferometer, Physical Review A, 85巻, pp. 062108, 201206
  90. Direct measurement of the positive acceleration of the universe and testing inhomogeneous models under gravitational wave cosmology, Journal of Cosmology and Astroparticle Physics, 2012巻, 04号, pp. 031, 201204
  91. ★, Cosmology with space-based gravitational-wave detectors: Dark energy and primordial gravitational waves, Physical Review D, 85巻, pp. 044047, 201202
  92. Evaluation of weak measurements to all orders, Physical Review A, 85巻, pp. 012113, 201201
  93. Tracing the redshift evolution of Hubble parameter with gravitational-wave standard sirens, Physical Review D, 83巻, pp. 084045, 201104
  94. Cosmological test of gravity with polarizations of stochastic gravitational waves around 0.1-1 Hz, Physical Review D, 81巻, pp. 104043, 201005
  95. Measurement of angular antispring effect in optical cavity by radiation pressure, Physical Review D, 81巻, pp. 064023, 201003
  96. Development of a Displacement- and Frequency-Noise-Free Interferometer in a 3D Configuration for Gravitational Wave Detection, Physical Review Letters, 103巻, pp. 171101, 200910
  97. ★, Probing nontensorial polarizations of stochastic gravitational-wave backgrounds with ground-based laser interferometers, Physical Review D, 79巻, pp. 082002, 200904
  98. Optimal location of two laser-interferometric detectors for gravitational wave backgrounds at 100 MHz, Classical and Quantum Gravity, 25巻, pp. 225011, 200811
  99. Experimental investigation of a control scheme for a zero-detuning resonant sideband extraction interferometer for next-generation gravitational-wave detectors, Classical and Quantum Gravity, 25巻, pp. 195008, 200810
  100. Search for a stochastic background of 100-MHz gravitational waves with laser interferometers, Physical Review Letters, 101巻, pp. 101101, 200809
  101. Resonant speed meter for gravitational-wave detection, Physical Review Letters, 101巻, pp. 081101, 200808
  102. Demonstration of displacement-noise-free interferometry using bi-directional Mach-Zehnder interferometers, Classical and Quantum Gravity, 25巻, pp. 225011, 200806
  103. Laser-interferometric detectors for gravitational wave backgrounds at 100 MHz: Detector design and sensitivity, Physical Review D, 77巻, pp. 022002, 200801
  104. Quantum noise in differential-type gravitational-wave interferometer and signal recycling, Physical Review D, 76巻, pp. 042002, 200708

受賞

  1. 2024年03月01日, APS Outstanding Referees, アメリカ物理学会
  2. 2021年04月14日, 令和3年度科学技術分野 文部科学大臣表彰 若手科学者賞, 文部科学大臣
  3. 2019年03月14日, 第13回中村誠太郎賞, 素粒子奨学会
  4. 2009年07月21日, Honorable Mention, GWIC (Gravitational Wave International Committee) Thesis Prize, Gravitational Wave International Committee