My Research



My CV is here.
  • Research Interests
  • Media Press Release
  • Scientific Articles / Interviewed Magazines
  • Papers In prep. / Refereed / Others
  • Referee activity

    Research Interests


    Media Press Release

    1. Decoding the gravitational evolution of dark matter halos
      暗黒物質による宇宙大規模構造の複雑に絡み合う重力進化

      Shun Saito, Teppei Okumura
      Kavli IPMU on Jan. 13, 2015 [ IPMU (EN / JP) ]
    2. New test by deepest galaxy map finds Einstein’s theory stands true
      130億光年彼方での一般相対性理論の検証 ~アインシュタインは間違っていなかった?~

      Teppei Okumura, Chiaki Hikage
      Kavli IPMU on May. 11, 2016 [ IPMU (EN / JP) ] [ U Tokyo (EN / JP) ] [ NAOJ (EN / JP) ] [ Subaru (EN / JP) ] [ Kyoto U (EN / JP) ] [ Tohoku U (EN / JP) ] [ Yahoo! Japan News (captured) ]

    Scientific Articles / Interviewed Magazines

    1. An Analysis of SDSS Data Using the Galaxy Anisotropic Correlation Function
      SDSS データを用いた銀河の非等方相関関数の解析
      (In Japanese)
      Teppei Okumura
      The Astronomical Herald, Vol.101, No.10, p.589 - 597 (2008) [ ADS ] [ PDF ]
    2. General Relativity Stands True at Distant Universe
      遠くの宇宙でも一般相対論は正しかった
      (In Japanese)
      Teppei Okumura (interview) written by Yoshitaka Arafune
      Graphic Science Magazine NEWTON, No.8, p.128-p.128 (2016) [ Homepage ]
    3. New Test of Einstein's General Relativity by Deepest Galaxy Survey with Subaru Telescope
      すばる望遠鏡を用いた130億光年彼方での一般相対性理論の検証
      (In Japanese)
      Teppei Okumura, Motonari Tonenaga, Tomonori Totani, Chiaki Hikage
      The Astronomical Herald, Vol.110, No.2, p.131 - 141 (2017) [ PDF ]

    Papers
    [Full list ADS (1st author) / INSPIRES / arXiv]
    [Citations ADS (1st author) / INSPIRES]

    Papers in prep.
    1. Kazuyuki Akitsu, Yin Li & Teppei Okumura To be submitted to Physical Review D
    Refereed Papers (You can read all the papers by clicking the link "[PDF]")
    1. Relativistic distortions in galaxy density-ellipticity correlations: gravitational redshift and peculiar velocity effects
      Shohei Saga, Teppei Okumura, Atsushi Taruya & Takuya Inoue
      Submitted to Monthly Notices of the Royal Astronomical Society [ ADS ] [ arXiv:2207.03454 ] [ PDF ]
    2. Clustering of emission line galaxies with IllustrisTNG I.: fundamental properties and halo occupation distribution
      Ken Osato & Teppei Okumura
      Submitted to Monthly Notices of the Royal Astronomical Society [ ADS ] [ arXiv:2206.08678 ] [ PDF ]
    3. Tightening geometric and dynamical constraints on dark energy and gravity: galaxy clustering, intrinsic alignment and kinetic Sunyaev-Zel'dovich effect
      Teppei Okumura & Atsushi Taruya
      Submitted to Physical Review D. [ ADS ] [ arXiv:2110.11127 ] [ PDF ]
    4. Distinguishing between LCDM and f(R) gravity models using halo ellipticity correlations in simulations
      Yao-Tsung Chuang, Teppei Okumura, Masato Shirasaki
      Monthly Notices of the Royal Astronomical Society, in press [ ADS ] [ arXiv:2111.01417 ] [ PDF ]
    5. First Evidence of Intrinsic Alignments of Red Galaxies at z > 1: Cross-correlation between CFHTLenS and FastSound Samples
      Motonari Tonegawa & Teppei Okumura
      The Astrophysical Journal Letters, 924 (2022) L3 [ ADS ] [ arXiv:2109.14297 ] [ PDF ]
    6. Halo-model analysis of the clustering of photometric luminous red galaxies at 0.10 < z < 1.05 from the Subaru Hyper Suprime-Cam Survey
      Shogo Ishikawa, Teppei Okumura, Masamune Oguri & Sheng-Chieh Lin
      The Astrophysical Journal, 922 (2021) 23 [ ADS ] [ arXiv:2103.08628 ] [ PDF ]
    7. Angular clustering and host halo properties of [OII] emitters at z>1 in the Subaru HSC survey
      Teppei Okumura, Masao Hayashi, I-Non Chiu, Yen-Ting Lin, Ken Osato, Bau-Ching Hsieh & Sheng-Chieh Lin
      Publication for Astronomical Society of Japan, 73 (2021) 1186-1207 [ ADS ] [ arXiv:2012.12224 ] [ PDF ]
    8. Alcock-Paczynski effects on wide-angle galaxy statistics
      Maresuke Shiraishi, Kazuyuki Akitsu, & Teppei Okumura
      Physical Review D., 103 (2021) 123534 [ ADS ] [ arXiv:2103.08126 ] [ PDF ]
    9. Wide-angle effects on galaxy ellipticity correlations
      Maresuke Shiraishi, Atsushi Taruya, Teppei Okumura, & Kazuyuki Akitsu
      Monthly Notices of the Royal Astronomical Society Letters, 503 (2021) L6-L10 [ ADS ] [ arXiv:2012.13290 ] [ PDF ]
    10. Cosmological simulation in tides: power spectra, halo shape responses, and shape assembly bias
      Kazuyuki Akitsu, Yin Li & Teppei Okumura
      Journal of Cosmology and Astroparticle Physics, 04 (2021) 041 [ ADS ] [ arXiv:2011.06584 ] [ PDF ]
    11. Minimum variance estimation of statistical anisotropy via galaxy survey
      Maresuke Shiraishi, Teppei Okumura, & Kazuyuki Akitsu
      Journal of Cosmology and Astroparticle Physics, 03 (2021) 039 [ ADS ] [ arXiv:2009.04355 ] [ PDF ]
    12. Standard candles and sirens rescue H0
      Aniket Agrawal, Teppei Okumura & Toshifumi Futamase
      The Astrophysical Journal, 904 (2020) 169 [ ADS ] [ arXiv:2008.00869 ] [ PDF ]
    13. A clustering-based self-calibration of the richness-to-mass relation of CAMIRA galaxy clusters out to z~1 in the Hyper Suprime-Cam survey
      I-Non Chiu, Teppei Okumura, Masamune Oguri, Aniket Agrawal, Keiichi Umetsu, & Yen-Ting Lin
      Monthly Notices of the Royal Astronomical Society, 498 (2020) 2030-2053 [ ADS ] [ arXiv:2005.13564 ] [ PDF ]
    14. Minimum variance estimation of galaxy power spectrum in redshift space
      Maresuke Shiraishi, Teppei Okumura, Naonori S. Sugiyama, & Kazuyuki Akitsu
      Monthly Notices of the Royal Astronomical Society Letters, 498 (2020) L77-L81 [ ADS ] [ arXiv:2005.03438 ] [ PDF ]
    15. New measures to test modified gravity cosmologies
      Jiro Matsumoto, Teppei Okumura, & Misao Sasaki
      Journal of Cosmology and Astroparticle Physics, 07 (2020) 059 [ ADS ] [ arXiv:2005.09227 ] [ PDF ]
    16. Testing tidal alignment models for anisotropic correlations of halo ellipticities with N-body simulations
      Teppei Okumura, Atsushi Taruya & Takahiro Nishimichi
      Monthly Notices of the Royal Astronomical Society, 494 (2020) 694-702 [ ADS ] [ arXiv:2001.05302 ] [ PDF ]
    17. Improving Geometric and Dynamical Constraints on Cosmology with Intrinsic Alignments of Galaxies
      Atsushi Taruya & Teppei Okumura
      The Astrophysical Journal Letters, 891 (2020) L42 [ ADS ] [ arXiv:2001.05962 ] [ PDF ]
    18. Anisotropies of intrinsic ellipticity correlations in real and redshift space: Angular dependence in linear tidal alignment model
      Teppei Okumura & Atsushi Taruya
      Monthly Notices of the Royal Astronomical Society Letters, 493 (2020) L124-L128 [ ADS ] [ arXiv:1912.04118 ] [ PDF ]
    19. Intrinsic alignment statistixs of density and velocity Fields at large scales: Formulation, modeling and baryon acoustic oscillation features
      Teppei Okumura, Atsushi Taruya & Takahiro Nishimichi
      Physical Review D., 100 (2019) 103507 [ ADS ] [ arXiv:1907.00750 ] [ PDF ]
    20. Constraining neutrino mass and dark energy with peculiar velocities and lensing dispersions of Type Ia supernovae
      Aniket Agrawal, Teppei Okumura & Toshifumi Futamase
      Physical Review D., 100 (2019) 063534 [ ADS ] [ arXiv:1907.02328 ] [ PDF ]
    21. Splashback radius of nonspherical dark matter halos from cosmic density and velocity fields
      Teppei Okumura, Takahiro Nishimichi, Keiichi Umetsu & Ken Osato
      Physical Review D., 92 (2018) 023523 [ ADS ] [ arXiv:1807.02669 ] [ PDF ]
    22. The Projected Dark and Baryonic Ellipsoidal Structure of 20 CLASH Galaxy Clusters
      Keiichi Umetsu, Mauro Sereno, Sut-Ieng Tam, I-Non Chiu, Zuhui Fan, Stefano Ettori, Daniel Gruen, Teppei Okumura, Elinor Medezinski, Megan Donahue, Massimo Meneghetti, Brenda Frye, Anton Koekemoer, Tom Broadhurst, Adi Zitrin, Italo Balestra, Narciso Benitez, Yuichi Higuchi, Peter Melchior, Amata Mercurio, Julian Merten, Alberto Molino, Mario Nonino, Marc Postman, Piero Rosati, Jack Sayers & Stella Seitz
      The Astrophysical Journal, 860 (2018) 104 [ ADS ] [ arXiv:1804.00664 ] [ PDF ]
    23. Cosmological distance indicators
      Sherry H. Suyu, Tzu-Ching Chang, Frederic Courbin & Teppei Okumura
      Space Science Reviews, 214 (2018) 91 [ ADS ] [ arXiv:1801.07262 ] [ PDF ]
    24. Strong orientation dependence of surface mass density profiles of dark haloes at large scales
      Ken Osato, Takahiro Nishimichi, Masamune Oguri, Masahiro Takada & Teppei Okumura
      Monthly Notices of the Royal Astronomical Society, 477 (2018) 2141 [ ADS ] [ arXiv:1712.00094 ] [ PDF ]
    25. The Subaru FMOS galaxy redshift survey (FastSound). V. Intrinsic alignment of emission line galaxies at z ~ 1.4
      Motonari Tonegawa, Teppei Okumura, Tomonori Totani, Gavin Dalton & Kiyoto Yabe
      Publication for Astronomical Society of Japan, 70 (2018) 41 [ ADS ] [ arXiv:1708.02224 ] [ PDF ]
    26. Large-scale structure in mimetic Horndeski gravity
      Frederico Arroja, Teppei Okumura, Nicola Bartolo, Purnendu Karmakar & Sabino Matarrese
      Journal of Cosmology and Astroparticle Physics, 05 (2018) 050 [ ADS ] [ arXiv:1708.01850 ] [ PDF ]
    27. A direct measure of free electron gas via the Kinematic Sunyaev-Zel'dovich effect in Fourier-space analysis
      Naonori S. Sugiyama, Teppei Okumura & David N. Spergel
      Monthly Notices of the Royal Astronomical Society, 475 (2018) 3764-3785 [ ADS ] [ arXiv:1705.07449 ] [ PDF ]
    28. Limits on statistical anisotropy from BOSS DR12 galaxies using bipolar spherical harmonics
      Naonori S. Sugiyama, Maresuke Shiraishi, & Teppei Okumura
      Monthly Notices of the Royal Astronomical Society, 473 (2018) 2737-2752 [ ADS ] [ arXiv:1704.02868 ] [ PDF ]
    29. Polypolar spherical harmonic decomposition of galaxy correlators in redshift space: Toward cosmic isotropy and homogeneity tests
      Maresuke Shiraishi, Naonori S. Sugiyama, & Teppei Okumura
      Physical Review D, 95 (2017) 063508 [ ADS ] [ arXiv:1612.02645 ] [ PDF ]
    30. Reconstruction of halo power spectrum from redshift-space galaxy distribution: cylinder-grouping method and halo exclusion effect
      Teppei Okumura, Masahiro Takada, Surhud More, & Shogo Masaki
      Monthly Notices of the Royal Astronomical Society, 469 (2017) 459-475 [ ADS ] [ arXiv:1611.04165 ] [ PDF ]
    31. Will Kinematic Sunyaev-Zel'dovich Measurements Enhance the Science Return from Galaxy Redshift Surveys?
      Naonori S. Sugiyama, Teppei Okumura & David N. Spergel
      Journal of Cosmology and Astroparticle Physics, 01 (2017) 057 [ ADS ] [ arXiv:1606.06367 ] [ PDF ]
    32. The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at z ~ 1.4
      Teppei Okumura, Chiaki Hikage, Tomonori Totani, Motonari Tonegawa, Hiroyuki Okada, Karl Glazebrook, Chris Blake, Pedro G. Ferreira, Surhud More, Atsushi Taruya, Shinji Tsujikawa, Masayuki Akiyama, Gavin Dalton, Tomotsugu Goto, Takashi Ishikawa, Fumihide Iwamuro, Takahiko Matsubara, Takahiro Nishimichi, Kouji Ohta, Ikkoh Shimizu, Ryuichi Takahashi, Naruhisa Takato, Naoyuki Tamura, Kiyoto Yabe, Naoki Yoshida
      Publication for Astronomical Society of Japan, 68 (2016) 38 [ ADS ] [ arXiv:1511.08083 ] [ PDF ]
    33. Understanding redshift space distortions in density-weighted peculiar velocity
      Naonori S. Sugiyama, Teppei Okumura & David N. Spergel
      Journal of Cosmology and Astroparticle Physics, 07 (2016) 001 [ ADS ] [ arXiv:1509.08232 ] [ PDF ]
    34. Consistent Modified Gravity Analysis of Anisotropic Galaxy Clustering Using BOSS DR11
      Yong-Seon Song, Atsushi Taruya, Eric Linder, Kazuya Koyama, Cristiano G. Sabiu, Gong-Bo Zhao, Francis Bernardeau, Takahiro Nishimichi & Teppei Okumura
      Physical Review D, 92 (2015) 043522 [ ADS ] [ arXiv:1507.01592 ] [ PDF ]
    35. Galaxy power spectrum in redshift space: combining perturbation theory with the halo model
      Teppei Okumura, Nick Hand, Uros Seljak, Zvonimir Vlah & Vincent Desjacques
      Physical Review D, 92 (2015) 103516 [ ADS ] [ arXiv:1506.05814 ] [ PDF ]
    36. The Subaru FMOS Galaxy Redshift Survey (FastSound). II. The Emission Line Catalog and Properties of Emission Line Galaxies
      Hiroyuki Okada, Tomonori Totani, Motonari Tonegawa, Masayuki Akiyama, Gavin Dalton, Karl Glazebrook, Fumihide Iwamuro, Kouji Ohta, Naruhisa Takato, Naoyuki Tamura, Kiyoto Yabe, Andrew J. Bunker, Tomotsugu Goto, Chiaki Hikage, Takashi Ishikawa, Teppei Okumura & Ikkoh Shimizu
      Publication for Astronomical Society of Japan, 68 (2016) 47 [ ADS ] [ arXiv:1504.05592 ] [ PDF ]
    37. The Subaru FMOS Galaxy Redshift Survey (FastSound). I. Overview of the Survey Targeting on H$α$ Emitters at z ~ 1.4
      Motonari Tonegawa, Tomonori Totani, Hiroyuki Okada, Masayuki Akiyama, Gavin Dalton, Karl Glazebrook, Fumihide Iwamuro, Toshinori Maihara, Kouji Ohta, Ikkoh Shimizu, Naruhisa Takato, Naoyuki Tamura, Kiyoto Yabe, Andrew J. Bunker, Jean Coupon, Pedro G. Ferreira, Carlos S. Frenk, Tomotsugu Goto, Chiaki Hikage, Takashi Ishikawa, Takahiko Matsubara, Surhud More, Teppei Okumura, Will J. Percival, Lee R. Spitler, & Istvan Szapudi
      Publication for Astronomical Society of Japan, 67 (2015) 81 [ ADS ] [ arXiv:1502.07900 ] [ PDF ]
    38. Cosmological Tests using Redshift Space Clustering in BOSS DR11
      Yong-Seon Song, Cristiano G. Sabiu, Teppei Okumura, Minji Oh & Eric V. Linder
      Journal of Cosmology and Astroparticle Physics, 12 (2014) 005 [ ADS ] [ arXiv:1407.2257 ] [ PDF ]
    39. Understanding higher-order nonlocal halo bias at large scales by combining the power spectrum with the bispectrum
      Shun Saito, Tobias Baldauf, Zvonimir Vlah, Uros Seljak, Teppei Okumura & Patrick McDonald
      Physical Review D, 90 (2014) 123522 [ ADS ] [ arXiv:1405.1447 ] [ PDF ]
    40. Peculiar velocities in redshift space: formalism, N-body simulations and perturbation theory
      Teppei Okumura, Uros Seljak, Zvonimir Vlah & Vincent Desjacques
      Journal of Cosmology and Astroparticle Physics, 05 (2014) 003 [ ADS ] [ arXiv:1312.4214 ] [ PDF ]
    41. Geometric and dynamic distortions in anisotropic galaxy clustering
      Jonathan Blazek, Uros Seljak, Zvonimir Vlah & Teppei Okumura
      Journal of Cosmology and Astroparticle Physics, 04 (2014) 001 [ ADS ] [ arXiv:1311.5563 ] [ PDF ]
    42. Cosmological Constraints from the Anisotropic Clustering Analysis using BOSS DR9
      Eric V. Linder, Minji Oh, Teppei Okumura, Cristiano G. Sabiu & Yong-Seon Song
      Physical Review D, 89 (2014) 063525 [ ADS ] [ arXiv:1311.5226 ] [ PDF ]
    43. Broadband Alcock-Paczynski test exploiting redshift distortions
      Yong-Seon Song, Teppei Okumura & Atsushi Taruya
      Physical Review D, 89 (2014) 103541 [ ADS ] [ arXiv:1309.1162 ] [ PDF ]
    44. Distribution function approach to redshift space distortions. Part V: perturbation theory applied to dark matter halos
      Zvonimir Vlah, Uros Seljak, Teppei Okumura & Vincent Desjacques
      Journal of Cosmology and Astroparticle Physics, 10 (2013) 053 [ ADS ] [ arXiv:1308.6294 ] [ PDF ]
    45. Distribution function approach to redshift space distortions. Part IV: perturbation theory applied to dark matter
      Zvonimir Vlah, Uros Seljak, Patrick McDonald, Teppei Okumura & Tobias Baldauf
      Journal of Cosmology and Astroparticle Physics, 11 (2012) 009 [ ADS ] [ arXiv:1207.0839 ] [ PDF ]
    46. Distribution function approach to redshift space distortions. Part III: halos and galaxies
      Teppei Okumura, Uros Seljak & Vincent Desjacques
      Journal of Cosmology and Astroparticle Physics, 11 (2012) 014 [ ADS ] [ arXiv:1206.4070 ] [ PDF ]
    47. Distribution function approach to redshift space distortions. Part II: N-body simulations
      Teppei Okumura, Uros Seljak, Patrick McDonald & Vincent Desjacques
      Journal of Cosmology and Astroparticle Physics, 02 (2012) 010 [ ADS ] [ arXiv:1109.1609 ] [ PDF ]
    48. Galaxy clustering and projected density profiles as traced by satellites in photometric surveys: Methodology and luminosity dependence
      Wenting Wang, Y. P. Jing, Cheng Li, Teppei Okumura & Jiaxin Han
      The Astrophysical Journal, 734 (2011) 88 [ ADS ] [ arXiv:1011.2058 ] [ PDF ]
    49. Systematic Effects on Determination of the Growth Factor from Redshift-space Distortions
      Teppei Okumura & Y. P. Jing
      The Astrophysical Journal, 726 (2011) 5 [ ADS ] [ arXiv:1004.3548 ] [ PDF ]
    50. The Gravitational Shear-Intrinsic Ellipticity Correlation Functions of Luminous Red Galaxies in Observation and in the LCDM Model
      Teppei Okumura & Y. P. Jing
      The Astrophysical Journal Letters, 694 (2009) L83-L86 [ ADS ] [ arXiv:0812.2935 ] [ PDF ]
    51. Intrinsic Ellipticity Correlation of SDSS Luminous Red Galaxies and Misalignment with their Host Dark Matter Halos
      Teppei Okumura, Y. P. Jing, & Cheng Li
      The Astrophysical Journal, 694 (2009) 214-221 [ ADS ] [ arXiv:0809.3790 ] [ PDF ]
    52. Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
      Teppei Okumura, Takahiko Matsubara, Daniel J. Eisenstein, Issha Kayo, Chiaki Hikage, Alexander S. Szalay, & Donald P. Schneider
      The Astrophysical Journal, 676 (2008), pp.889-898 [ ADS ] [ arXiv:0711.3640 ] [ PDF ]
    Others
    1. Proceedings and unpublished papers
      1. Intrinsic Alignments and Splashback Radius of Dark Matter Halos from Cosmic Density and Velocity Fields
        Teppei Okumura, Takahiro Nishimichi, Keiichi Umetsu & Ken Osato
        arXiv preprint [ ADS ] [ arXiv:1706.08860 ] [ PDF ]
      2. Heavy-Tail Distribution from Correlation of Discrete Stochastic Process
        Jongwook Kim & Teppei Okumura
        arXiv preprint [ ADS ] [ arXiv:1203.5581 ] [ PDF ]
      3. Mergers of Galaxies and Orientation of Giant Elliptical Galaxies
        Jing, Y. P., Jiang, C. Y., Okumura, T., Faltenbacher, A., Li, C., Lin, W. P.
        ASP Conf. Ser. 408, The Starburst-AGN Connection, ed. W. Wang, Z. Yang, Z. Luo, and Z. Chen (San Francisco: Astronomical Society of the Pacific), 2009., p.328 [ ADS ]
    2. Dissertations
      1. Self-similar Solution of Supernova Explosion and its Perturbation
        2003/3 Graduation Thesis, Kwansei Gakuin University
      2. A Cosmological Analysis of SDSS Anisotropic Correlation Function
        2005/3 Master Thesis, Nagoya Univerwsity
      3. Cosmological analysis from large-scale anisotropic correlation function of the Sloan Digital Sky Survey
        2008/3 PhD Thesis, Nagoya University
        FERMILAB-THESIS-2008-38, Mar 2008. 107pp. Ph.D. Thesis (advisor: Takahiko Matsubara). [ SPIRES ]

    Referee activities for journals



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