奥村哲平 Okumura, Teppei

Research Fellow

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辦公室: ASMAB 1214
電子信箱: tokumura _replace_to_@_ asiaa.sinica.edu.tw
pubLON 3990914/teppei-okumura/
ORCID 0000-0002-8942-9772
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研究著作列表

研究興趣

Observational cosmology, Large-scale structure of the Universe, Analysis of large datasets and simulations, Galaxy redshift surveys, Dark matter and Dark energy, Modified gravity theory, Gravitational waves

工作經歷

學歷

榮譽與獎勵

委員會服務

期刊論文(中研院就職期間發表)(59)

  1. Osato K; Okumura T, "Clustering of emission line galaxies with IllustrisTNG ─ II. Cosmology challenge with anisotropic correlation functions and ELG─halo connections", MNRAS: 551(1), id.stag1439 (16 pp), Sep, 2026 [SCI] ( ADS | Fulltext )
  2. Minato K; Taruya A; Okumura T; Shiraishi M, "Probing dipolar power asymmetry with galaxy clustering and intrinsic alignments", Phys Rev D: 114(4), id.043534 (16 pp), Aug, 2026 [SCI] ( ADS | Fulltext )
  3. Mikura Y; Okumura T; Sasaki M, "Imprints of gravitational-wave polarizations on projected tidal tensor in three dimensions", JCAP: 2026(4), id.061 (29 pp), Apr, 2026 [SCI] ( ADS | Fulltext )
  4. Moon J-S; Okumura T, "Galaxy Spin Alignment with Tidal Fields in the SDSS-IV MaNGA Survey", ApJ: 995(1), id.L8 (11 pp), Dec, 2025 [SCI]
  5. Roy Choudhury S; Okumura T; Umetsu K, "Cosmological Constraints on Nonphantom Dynamical Dark Energy with DESI Data Release 2 Baryon Acoustic Oscillations: A 3σ+ Lensing Anomaly", ApJL: 994(1), id. L26, Nov, 2025 [SCI]
  6. Okumura T, "Evidence for Intrinsic Galaxy Alignments in Ellipticity Autocorrelations Out to 100 h‑1 Mpc from SDSS Galaxies with DESI Imaging", ApJ: 990(1), id.L19 (7 pp), Sep, 2025 [SCI]
  7. Shim J; Pen U-L; Yu H-R; Okumura T, "Probing vector chirality in the early Universe", Phys Rev Lett: 135(14), 141002, Sep, 2025 [SCI]
  8. Pu S-Y; Okumura T; Chen C-C; Nishimichi T; Akitsu K, "Constraining cosmology with N-body simulations for future spectroscopic galaxy surveys at 2≤z≤3", Phys Rev D: 112(4), id.L041302 (8 pp), Aug, 2025 [SCI]
  9. Shim J; Okumura T; Taruya A, "Improving cosmological constraints via galaxy intrinsic alignment in full-shape analysis", Phys Rev D: 111(12), id.123551 (21 pp), Jun, 2025 [SCI]
  10. Ishikawa S; Okumura T; Hayashi M; Takeuchi TT, "A new constraint on galaxy-halo connections of [O II] emitters via HOD modelling with angular clustering and luminosity functions from the Subaru HSC survey", MNRAS: 539(3), pp. 2323-2346 (24 pp), May, 2025 [SCI]
  11. Masaki S; Shiraishi M; Nishimichi T; Okumura T; Yokoyama S, "First confirmation of anisotropic halo bias from statistically anisotropic matter distributions", Phys Rev D: 111(10), id.L101301 (6 pp), May, 2025 [SCI]
  12. Shim J; Okumura T; Taruya A, "Squeezing Full-shape Dynamical Dark Energy Constraints with Galaxy Alignments", ApJL: 985(1), id.L14 (6 pp), May, 2025 [SCI]
  13. Taruya A; Kurita T; Okumura T, "Improving redshift-space power spectra of halo intrinsic alignments from perturbation theory", Phys Rev D: 111(10), id.103518 (22 pp), May, 2025 [SCI]
  14. Inoue T; Okumura T; Saga S; Taruya A, "Testing local position invariance with odd multipoles of galaxy clustering statistics", Phys Rev D: 111(8), id.L081303 (7 pp), Apr, 2025 [SCI]
  15. Tonegawa M; Okumura T; Hayashi M, "Intrinsic alignments and spin correlations of [O II] emitters at z = 1.2 and z = 1.5 from the HSC narrow-band survey", PASJ: 77(2), id.389 (14pp), Apr, 2025 [SCI]
  16. Inoue T; Okumura T; Saga S; Taruya A, "Information content in anisotropic cosmological fields: Impact of different multipole expansion scheme for galaxy density and ellipticity correlations", Phys Rev D: 111(2), id.023507 (21 pp), Jan, 2025 [SCI]
  17. Roy Choudhury S; Okumura T, "Updated Cosmological Constraints in Extended Parameter Space with Planck PR4, DESI Baryon Acoustic Oscillations, and Supernovae: Dynamical Dark Energy, Neutrino Masses, Lensing Anomaly, and the Hubble Tension", ApJL: 976(1), id. L11 (10pp), Nov, 2024 [SCI]
  18. Okumura T; Sasaki M, "Extracting parity-violating gravitational waves from projected tidal force tensor in three dimensions", JCAP: 2024(10), id.060 (25 pp.), Oct, 2024 [SCI]
  19. Van Kampen E; Bakx T; De Breuck C; Chen C-C; Dannerbauer H; Magnelli B; Montenegro-Montes FM; Okumura T; Pu S-Y; Rybak M; Saintonge A; Cicone C; Hatziminaoglou E; Hilhorst J; Klaassen P; Lee M; Lovell CC; Lundgren A; Di Mascolo L; Mroczkowski T; Sommovigo L; Booth M; Cordiner MA; Ivison R; Johnstone D; Liu D; Maccarone TJ; Smith M; Thelen AE; Wedemeyer S, "Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Surveying the distant Universe", Open Research Europe: 4, 122, June, 2024 [SCI]
  20. Okumura T; Taruya A; Kurita T; Nishimichi T, "Nonlinear redshift space distortion in halo ellipticity correlations: Analytical model and N-body simulations", Phys Rev D: 109(10), id.103501 (26 pp), May, 2024 [SCI]
  21. Ishikawa S; Okumura T; Nishimichi T, "MOCK OBSERVATORY: Two thousand light-cone mock catalogues of luminous red galaxies from the Hyper Suprime-Cam Survey for the cosmological large-scale analysis", MNRAS: 529(2), 1839-1851, Apr, 2024 [SCI]
  22. Saga S; Shiraishi M; Akitsu K; Okumura T, "Imprints of primordial magnetic fields on intrinsic alignments of galaxies", Phys Rev D: 109(4), id.43520, Feb, 2024 [SCI]
  23. Chaurasiya N; More S; Ishikawa S; Masaki S; Kashino D; Okumura T, "Galaxy-dark matter connection of photometric galaxies from the HSC-SSP Survey: Galaxy-galaxy lensing and the halo model", MNRAS: 527(3), 5265-5292, Jan, 2024 [SCI]
  24. Akitsu K; Li Y; Okumura T, "Quadratic shape biases in three-dimensional halo intrinsic alignments", JCAP: 2023(8), id.068 (21 pp), Aug, 2023 [SCI]
  25. Shiraishi M; Okumura T; Akitsu K, "Statistical anisotropy in galaxy ellipticity correlations", JCAP: 2023(8), id.13 (27pp), Aug, 2023 [SCI]
  26. Arai, Shun; Aoki, Katsuki; Chinone, Yuji; Kimura, Rampei; Kobayashi, Tsutomu; Miyatake, Hironao; Yamauchi, Daisuke; Yokoyama, Shuichiro; Akitsu, Kazuyuki; Hiramatsu, Takashi; Hirano, Shin'ichi; Kase, Ryotaro; Katsuragawa, Taishi; Kobayashi, Yosuke; Namikawa, Toshiya; Nishimichi, Takahiro; Okumura, Teppei; Shiraishi, Maresuke; Shirasaki, Masato; Sunayama, Tomomi; Takahashi, Kazufumi; Taruya, Atsushi; Tokuda, Junsei, "Cosmological gravity probes: Connecting recent theoretical developments to forthcoming observations", Progress of Theoretical and Experimental Physics: 2023(7), id.072E01 (105 pp.), July, 2023 [SCI]
  27. Akitsu K; Li Y; Okumura T, "Gravitational wave fossils in nonlinear regime: Halo tidal bias and intrinsic alignments from gravitational wave separate universe simulations", Phys Rev D: 107(6), id.63531, March, 2023 [SCI]
  28. Okumura T; Taruya A, "First Constraints on Growth Rate from Redshift-space Ellipticity Correlations of SDSS Galaxies at 0.16 < z < 0.70", ApJL: 945(2), L30 (7pp), March, 2023 [SCI]
  29. Osato K; Okumura T, "Clustering of emission line galaxies with IllustrisTNG I.: Fundamental properties and halo occupation distribution", MNRAS: 519(2), 1771-1791, Feb, 2023 [SCI]
  30. Saga S; Okumura T; Taruya A; Inoue T, "Relativistic distortions in galaxy density-ellipticity correlations: gravitational redshift and peculiar velocity effects", MNRAS: 518(4), 4976-4990, Feb, 2023 [SCI]
  31. Chuang Y-T; Okumura T; Shirasaki M, "Distinguishing between ΛCDM and f(R) gravity models using halo ellipticity correlations in simulations", MNRAS: 515(3), 4464-4470, Sep, 2022 [SCI]
  32. Okumura T; Taruya A, "Tightening geometric and dynamical constraints on dark energy and gravity: Galaxy clustering, intrinsic alignment, and kinetic Sunyaev-Zel'dovich effect", Phys Rev D: 106(4), id.43523, Aug, 2022 [SCI]
  33. Tonegawa M; Okumura T, "First Evidence of Intrinsic Alignments of Red Galaxies at z > 1: Cross Correlation between CFHTLenS and FastSound Samples", ApJL: 924(1), id.L3 (7pp), Jan, 2022 [SCI]
  34. Ishikawa S; Okumura T; Oguri M; Lin S-C, "Halo-model Analysis of the Clustering of Photometric Luminous Red Galaxies at 0.10 ≤ z ≤1.05 from the Subaru Hyper Suprime-Cam Survey", ApJ: 922(1), id.23 (13pp), Nov, 2021 [SCI]
  35. Okumura T; Hayashi M; Chiu I-N; Lin Y-T; Osato K; Hsieh B-C; Lin S-C, "Angular clustering and host halo properties of [OII] emitters at z>1 in the Subaru HSC survey", PASJ: 73(4), 1186-1207, Aug, 2021 [SCI]
  36. Shiraishi M; Akitsu K; Okumura T, "Alcock-Paczynski effects on wide-angle galaxy statistics", Phys Rev D: 103(1), id.123534, Jun, 2021 [SCI]
  37. Shiraishi M; Taruya A; Okumura T; Akitsu K, "Wide-angle effects on galaxy ellipticity correlations", MNRAS: 503(1), L6–L10, May, 2021 [SCI]
  38. Akitsu K; Li Y; Okumura T, "Cosmological simulation in tides: power spectra, halo shape responses, and shape assembly bias", JCAP: 2021(04), id.41 (35pp), Apr, 2021 [SCI]
  39. Shiraishi M; Okumura T; Akitsu K, "Minimum variance estimation of statistical anisotropy via galaxy survey", JCAP: 2021(03), id.39 (20pp), Mar, 2021 [SCI]
  40. Agrawal A; Okumura T; Futamase T, "Standard candles and sirens rescue H0", ApJ: 904(2), id.169 (6pp), Dec, 2020 [SCI]
  41. Chiu I-N; Okumura T; Oguri M; Agrawal A, ...; Umetsu K; Lin Y-T, "A clustering-based self-calibration of the richness-to-mass relation of CAMIRA galaxy clusters out to z ≍ 1.1 in the Hyper Suprime-Cam survey", MNRAS: 498(2), 2030-2053, Oct, 2020 [SCI]
  42. Shiraishi M; Okumura T; Sugiyama NS; et al., "Minimum Variance Estimation of Galaxy Power Spectrum in Redshift Space", MNRAS: 498(1), L77-L81, Oct, 2020 [SCI]
  43. Matsumoto J; Okumura T; Sasaki M, "New measures to test modified gravity cosmologies", JCAP: 07, id. 059 (16pp.), Jul, 2020 [SCI]
  44. Okumura T; Taruya A; Nishimichi T, "Testing tidal alignment models for anisotropic correlations of halo ellipticities with N-body simulations", MNRAS: 494(1), 694-702 (9pp.), May, 2020 [SCI]
  45. Okumura T; Taruya A, "Anisotropies of galaxy ellipticity correlations in real and redshift space: Angular dependence in linear tidal alignment model", MNRAS: 493(1), L124-128 (5 pp.), Mar, 2020 [SCI]
  46. Taruya A; Okumura T, "Improving geometric and dynamical constraints on cosmology with intrinsic alignments of galaxies", ApJL: 891(2), id.L42 (6pp.), Mar, 2020 [SCI]
  47. Okumura T; Taruya A; Nishimichi T, "Intrinsic alignment statistics of density and velocity fields at large scales: Formulation, modeling, and baryon acoustic oscillation features", Phys Rev D: 100(10), id. 103507 (22 pp.), Nov, 2019 [SCI]
  48. Agrawal A; Okumura T; Futamase T, "Constraining neutrino mass and dark energy with peculiar velocities and lensing dispersions of Type Ia supernovae", Phys Rev D: 100(6), id. 063534 (8 pp.), Sep, 2019 [SCI]
  49. Suyu SH; Chang T-C; Courbin F; Okumura T, "Cosmological distance indicators", Space Sci Rev: 214(5), id. 91 (34 pp.), Aug, 2018 [SCI]
  50. Okumura T; Nishimichi T; Umetsu K; et al., "Splashback radius of nonspherical dark matter halos from cosmic density and velocity fields", Phys Rev D: 98(2), id. 023523 (18 pp.), July, 2018 [SCI]
  51. Osato K; Nishimichi T; Oguri M; Takada M; Okumura T, "Strong orientation dependence of surface mass density profiles of dark haloes at large scales", MNRAS: 477(2), 2141-2153, June, 2018 [SCI]
  52. Tonegawa M; Okumura T; Totani T; et al., "The Subaru FMOS galaxy redshift survey (FastSound). V. Intrinsic alignments of emission line galaxies at z ~ 1.4", PASJ: 70(3), 41, June, 2018 [SCI]
  53. Umetsu K; Sereno M; Tam S-L; Chiu I-N; ...; Okumura T; ...; Higuchi Y; et al., "The Projected Dark and Baryonic Ellipsoidal Structure of 20 CLASH Galaxy Clusters", ApJ: 806(2), id. 104 (26 pp.), June, 2018 [SCI]
  54. Arroja F; Okumura T; Bartolo N; et al., "Large-scale structure in mimetic Horndeski gravity", JCAP: 05, id. 050, May, 2018 [SCI]
  55. Sugiyama NS; Okumura T; Spergel DN, "A direct measure of free electron gas via the Kinematic Sunyaev-Zel'dovich effect in Fourier-space analysis", MNRAS: 475(3), 3764-3785, April, 2018 [SCI]
  56. Sugiyama NS; Shiraishi M; Okumura T, "Limits on statistical anisotropy from BOSS DR12 galaxies using bipolar spherical harmonics", MNRAS: 473(2), 2737-2752, Jan, 2018 [SCI]
  57. Okumura T; Takada M; More S; et al., "Reconstruction of halo power spectrum from redshift-space galaxy distribution: cylinder-grouping method and halo exclusion effect", MNRAS: 469(1), 459-475, July, 2017 [SCI]
  58. Shiraishi M; Sugiyama NS; Okumura T, "Polypolar spherical harmonic decomposition of galaxy correlators in redshift space: Toward testing cosmic rotational symmetry", Phys Rev D: 95(6), 063508, March, 2017 [SCI]
  59. Sugiyama NS; Okumura T; Spergel DN, "Will kinematic Sunyaev-Zel'dovich measurements enhance the science return from galaxy redshift surveys?", JCAP: 01, 057, Jan, 2017 [SCI]