西澤 篤志ATSUSHI NISHIZAWA

Last Updated :2024/06/24

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, 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. Physically consistent gravitational waveform for capturing beyond general relativity effects in the compact object merger phase, Physical Review D, 109巻, pp. 084058, 202404
  4. First results of axion dark matter search with DANCE, Physical Review D, 108巻, pp. 072005, 202310
  5. Circular Polarization of the Astrophysical Gravitational Wave Background, Physical Review Letters, 131巻, pp. 041401, 202307
  6. Observational constraint on axion dark matter in a realistic halo profile with gravitational waves, Physical Review D, 107巻, pp. 103516, 202305
  7. 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
  8. Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds, Physics Letters A, 458巻, pp. 128581, 202301
  9. Observational constraint on axion dark matter with gravitational waves, Physical Review D, 106巻, pp. L081301, 202210
  10. Neutron displacement noise-free interferometer for gravitational-wave detection, Physical Review D, 105巻, pp. 124017, 202206
  11. Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration, Physics Letters A, 441巻, pp. 128150, 202204
  12. Search for scalar-tensor mixed polarization modes of gravitational waves, Physical Review D, 105巻, pp. 084019, 202204
  13. 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
  14. Early warning of precessing compact binary merger with third-generation gravitational-wave detectors, Physical Review D, 104巻, pp. 064013, 202109
  15. Impacts of overlapping gravitational-wave signals on the parameter estimation: Toward the search for cosmological backgrounds, Physical Review D, 104巻, pp. 044010, 202108
  16. Reduction of quantum noise using the quantum locking with an optical spring for gravitational wave detectors, Physics Letters A, 402巻, pp. 127365, 202106
  17. An Early-warning System for Electromagnetic Follow-up of Gravitational-wave Events, The Astrophysical Journal Letters, 905巻, pp. L25, 202012
  18. Pure polarization test of GW170814 and GW170817 using waveforms consistent with modified theories of gravity, Physical Review D, 103巻, pp. 064037, 202010
  19. 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
  20. Cosmological evolution of viable models in the generalized scalar-tensor theory, Physical Review D, 102巻, pp. 024003, 202007
  21. Prospects for improving the sensitivity of the cryogenic gravitational wave detector KAGRA, Physical Review D, 102巻, pp. 022008, 202007
  22. Convergence of Fourier-domain templates for inspiraling eccentric compact binaries, Physical Review D, 100巻, pp. 064006, 201909
  23. 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
  24. Prospects for gravitational-wave polarization tests from compact binary mergers with future ground-based detectors, Physical Review D, 100巻, pp. 042001, 201908
  25. Generalized framework for testing gravity with gravitational-wave propagation. III. Future prospect, Physical Review D, 99巻, pp. 104038, 201905
  26. Parity-violating gravity and GW170817, Physical Review D, 98巻, pp. 124018, 201812
  27. Polarization test of gravitational waves from compact binary coalescences, Physical Review D, 98巻, pp. 022008, 201807
  28. Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector, Physical Review D, 97巻, pp. 122003, 201806
  29. ★, Generalized framework for testing gravity with gravitational-wave propagation. II. Constraints on Horndeski theory, Physical Review D, 97巻, pp. 104038, 201805
  30. ★, Generalized framework for testing gravity with gravitational-wave propagation. I. Formulation, Physical Review D, 97巻, pp. 104037, 201805
  31. Measurement of Hubble constant with stellar-mass binary black holes, Physical Review D, 96巻, pp. 101303(R), 201711
  32. Testing gravity with pulsar scintillation measurements, Physical Review D, 95巻, pp. 084049, 201704
  33. Constraining stellar binary black hole formation scenarios with eLISA eccentricity measurements, Monthly Notices of the Royal Astronomical Society, 465巻, pp. 4375, 201703
  34. Gravitational wave memory: A new approach to study modified gravity, Physical Review D, 94巻, pp. 104063, 201611
  35. eLISA eccentricity measurements as tracers of binary black hole formation, Physical Review D, 94巻, pp. 064020, 201609
  36. Detecting black-hole binary clustering via the second-generation gravitational-wave detectors, Physical Review D, 94巻, pp. 024013, 201607
  37. Constraining the propagation speed of gravitational waves with compact binaries at cosmological distances, Physical Review D, 93巻, pp. 124036, 201606
  38. Anisotropies of Gravitational-Wave Standard Sirens as a New Cosmological Probe without Redshift Information, Physical Review Letters, 116巻, pp. 121302, 201603
  39. Weak-value amplification beyond the standard quantum limit in position measurements, Physical Review A, 92巻, pp. 032123, 201509
  40. Search for an emission line of a gravitational wave background, Physical Review D, 91巻, pp. 122001, 201506
  41. ★, 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
  42. Constraint on reheating after f(R) inflation from gravitational waves, Physical Review D, 89巻, pp. 063541, 201403
  43. Probing for massive stochastic gravitational-wave background with a detector network, Physical Review D, 88巻, pp. 064005, 201309
  44. ★, Beyond concordance cosmology with magnification of gravitational-wave standard sirens, Physical Review Letters, 110巻, pp. 151103, 201304
  45. Model-independent test of gravity with a network of ground-based gravitational-wave detectors, Physical Review D, 87巻, pp. 062003, 201303
  46. Reheating after f(R) inflation, Physical Review D, 86巻, pp. 083514, 201210
  47. Weak-value amplification in a shot-noise-limited interferometer, Physical Review A, 85巻, pp. 062108, 201206
  48. 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
  49. ★, Cosmology with space-based gravitational-wave detectors: Dark energy and primordial gravitational waves, Physical Review D, 85巻, pp. 044047, 201202
  50. Evaluation of weak measurements to all orders, Physical Review A, 85巻, pp. 012113, 201201
  51. Tracing the redshift evolution of Hubble parameter with gravitational-wave standard sirens, Physical Review D, 83巻, pp. 084045, 201104
  52. Cosmological test of gravity with polarizations of stochastic gravitational waves around 0.1-1 Hz, Physical Review D, 81巻, pp. 104043, 201005
  53. Measurement of angular antispring effect in optical cavity by radiation pressure, Physical Review D, 81巻, pp. 064023, 201003
  54. 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
  55. ★, Probing nontensorial polarizations of stochastic gravitational-wave backgrounds with ground-based laser interferometers, Physical Review D, 79巻, pp. 082002, 200904
  56. Optimal location of two laser-interferometric detectors for gravitational wave backgrounds at 100 MHz, Classical and Quantum Gravity, 25巻, pp. 225011, 200811
  57. 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
  58. Search for a stochastic background of 100-MHz gravitational waves with laser interferometers, Physical Review Letters, 101巻, pp. 101101, 200809
  59. Resonant speed meter for gravitational-wave detection, Physical Review Letters, 101巻, pp. 081101, 200808
  60. Demonstration of displacement-noise-free interferometry using bi-directional Mach-Zehnder interferometers, Classical and Quantum Gravity, 25巻, pp. 225011, 200806
  61. Laser-interferometric detectors for gravitational wave backgrounds at 100 MHz: Detector design and sensitivity, Physical Review D, 77巻, pp. 022002, 200801
  62. Quantum noise in differential-type gravitational-wave interferometer and signal recycling, Physical Review D, 76巻, pp. 042002, 200708