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People > Research Fellow > Curriculum Vita
Theoretical modeling of large-scale galaxy distribution for a test of cosmic acceleration
Dark matter distribution from the analysis of density and velocity fields
Okumura, Teppei
Associate Research Fellow
photo of Okumura, Teppei
Office: ASMAB 1214
TEL: +886-2-2366-5401
FAX: +886-2-2367-7849
Email: tokumura_replace2@_asiaa.sinica.edu.tw

Education and Positions

  • Visiting Scientist, Kavli IPMU, The University of Tokyo, Japan (2017~present)
  • Associate Research Fellow, ASIAA (2017~present)
  • Project Researcher, Kavli IPMU, The University of Tokyo, Japan (2014~2016)
  • Postdoctoral Fellow, Institute for the Early Universe, Ewha Womans University, Korea (2009~2013)
  • Postdoctoral Fellow, Shanghai Astronomical Observatory, China (2008~2009)
  • Doctor in Physics, Nagoya University, Japan (2005~2008)
  • Master in Physics, Nagoya University, Japan (2003~2005)
  • Bachelor in Physics, Kwansei Gakuin University, Japan (1999~2003)

Honors & Awards

  • Career Development Award, Academia Sinica (2019~2023)
  • The PASJ Excellent Paper Award, The Astronomical Society of Japan (Okumura et al. 2016, PASJ, 68, 38) (2018)
  • PRD Editor's Suggestion, American Physical Society (Saito et al. 2014, PRD, 90, 123522) (2014)

Committees Served

  • Chair, Computing Committee, ASIAA (2020)

Research Interests

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

Recent Journal Papers

Complete List of Publications

  1. Maresuke Shiraishi*, Teppei Okumura, Kazuyuki Akitsu, "Minimum variance estimation of statistical anisotropy via galaxy survey" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2020-09, submitted [SCI] (Fulltext)
  2. Aniket Agrawal*, Teppei Okumura, Toshifumi Futamase, "Standard candles and sirens rescue H0" , Physical Review Letters, 2020-08, submitted [SCI] (Fulltext)
  3. I-Non Chiu*, Teppei Okumura, Masamune Oguri, Aniket Agrawal, Keiichi Umetsu, Yen-Ting Lin, "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" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 498(2), 2030–2053, 2020-08 [SCI] (Fulltext)
  4. Maresuke Shiraishi*, Teppei Okumura, Naonori S. Sugiyama, Kazuyuki Akitsu, "Minimum Variance Estimation of Galaxy Power Spectrum in Redshift Space" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 498(1), L77-L81, 2020-07 [SCI] (Fulltext)
  5. Jiro Matsumoto*, Teppei Okumura, Misao Sasaki, "New measures to test modified gravity cosmologies" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: 07, 059, 2020-07 [SCI] (Fulltext)
  6. Teppei Okumura*, Atsushi Taruya, "Anisotropies of galaxy ellipticity correlations in real and redshift space: Angular dependence in linear tidal alignment model" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 493(1), L124-L128, 2020-03 [SCI] (Fulltext)
  7. Atsushi Taruya*, Teppei Okumura, "Improving geometric and dynamical constraints on cosmology with intrinsic alignments of galaxies" , ASTROPHYSICAL JOURNAL LETTERS: 891(2), L42, 2020-03 [SCI] (Fulltext)
  8. Teppei Okumura*, Atsushi Taruya, Takahiro Nishimichi, "Testing tidal alignment models for anisotropic correlations of halo ellipticities with N-body simulations" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 494(1), 694-702, 2020-03 [SCI] (Fulltext)
  9. Teppei Okumura*, Atsushi Taruya, Takahiro Nishimichi, "Intrinsic alignment statistics of density and velocity fields at large scales: Formulation, modeling, and baryon acoustic oscillation features" , PHYSICAL REVIEW D: Volume 100, Issue 10, id. 103507, 2019-11 [SCI] (Fulltext)
  10. Aniket Agrawal*, Teppei Okumura, Toshifumi Futamase, "Constraining neutrino mass and dark energy with peculiar velocities and lensing dispersions of Type Ia supernovae" , PHYSICAL REVIEW D: Volume 100, Issue 06, id. 063534, 2019-09 [SCI] (Fulltext)
  11. Sherry H. Suyu*, Tzu-Ching Chang, Frederic Courbin, Teppei Okumura, "Cosmological distance indicators" , SPACE SCIENCE REVIEWS: 214, 91, 2018-08 [SCI] (Fulltext)
  12. Teppei Okumura*, Takahiro Nishimichi, Keiichi Umetsu, Ken Osato, "Splashback radius of non-spherical dark matter halos from cosmic density and velocity fields" , PHYSICAL REVIEW D: Volume 98, Issue 02, id. 023523, 2018-07 [SCI] (Fulltext)
  13. Ken Osato*, Takahiro Nishimichi, Masamune Oguri, Masahiro Takada, Teppei Okumura, "Strong orientation dependence of surface mass density profiles of dark haloes at large scales" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 477(2), 2141-2153, 2018-06 [SCI] (Fulltext)
  14. 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 Projected Dark and Baryonic Ellipsoidal Structure of 20 CLASH Galaxy Clusters" , ASTROPHYSICAL JOURNAL: 860(2), 104, 2018-06 [SCI] (Fulltext)
  15. Motonari Tonegawa*, Teppei Okumura, Tomonori Totani, Gavin Dalton, Karl Glazebrook, Kiyoto Yabe, "The Subaru FMOS galaxy redshift survey (FastSound). V. Intrinsic alignments of emission line galaxies at z ~ 1.4" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: 70(3), 41, 2018-06 [SCI] (Fulltext)
  16. Frederico Arroja*, Teppei Okumura, Nicola Bartolo, Purnendu Karmakar, Sabino Matarrese, "Large-scale structure in mimetic Horndeski gravity" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: 05, 050, 2018-05 [SCI] (Fulltext)
  17. Naonori S. Sugiyama*, Teppei Okumura, David N. Spergel, "A direct measure of free electron gas via the Kinematic Sunyaev-Zel'dovich effect in Fourier-space analysis" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 475(3), 3764-3785, 2018-04 [SCI] (Fulltext)
  18. Nanori S. Sugiyama*, Maresuke Shiraishi, Teppei Okumura, "Limits on statistical anisotropy from BOSS DR12 galaxies using bipolar spherical harmonics" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 473(2), 2737-2752, 2018-01 [SCI] (Fulltext)
  19. Teppei Okumura*, Masahiro Takada, Surhud More, Shogo Masaki, "Reconstruction of halo power spectrum from redshift-space galaxy distribution: cylinder-grouping method and halo exclusion effect" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 469(1), 459-475, 2017-07 [SCI] (Fulltext)
  20. Maresuke Shiraishi*, Naonori S. Sugiyama, Teppei Okumura, "Polypolar spherical harmonic decomposition of galaxy correlators in redshift space: Toward testing cosmic rotational symmetry" , PHYSICAL REVIEW D: Volume 95, Issue 06, id. 063508, 0, 2017-03-08 [SCI] (Fulltext)
  21. Naonori S. Sugiyama*, Teppei Okumura, David N. Spergel, "Will Kinematic Sunyaev-Zel'dovich measurements enhance the science return from galaxy redshift surveys?" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: 01, 57, 2017-01-30 [SCI] (Fulltext)
  22. Naonori S. Sugiyama*, Teppei Okumura, David N. Spergel, "Understanding redshift space distortions in density-weighted peculiar velocity" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: 07, 001, 2016-07 [SCI] (Fulltext)
  23. 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, "The Subaru FMOS galaxy redshift survey (FastSound). II. The emission line catalog and properties of emission line galaxies" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: 68(3), 47, 2016-06 [SCI] (Fulltext)
  24. 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, "The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at z ~ 1.4" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: 68(3), 38, 2016-06 [SCI] (Fulltext)
  25. Teppei Okumura*, Nick Hand, Uros Seljak, Zvonimir Vlah, Vincent Desjacques, "Galaxy power spectrum in redshift space: Combining perturbation theory with the halo model" , PHYSICAL REVIEW D: Volume 92, Issue 10, id. 103516, 2015-11 [SCI] (Fulltext)
  26. 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, "The Subaru FMOS galaxy redshift survey (FastSound). I. Overview of the survey targeting Hα emitters at z ̃ 1.4" , PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN: 67(5), 81, 2015-10 [SCI] (Fulltext)
  27. Yong-Seon Song*, Atsushi Taruya, Eric Linder, Kazuya Koyama, Cristiano G. Sabiu, Gong-Bo Zhao, Francis Bernardeau, Takahiro Nishimichi, Teppei Okumura, "Consistent modified gravity analysis of anisotropic galaxy clustering using BOSS DR11" , PHYSICAL REVIEW D: Volume 92, Issue 04, id.043522, 2015-08 [SCI] (Fulltext)
  28. Yong-Seon Song*, Cristiano G. Sabiu, Teppei Okumura, Minji Oh, Eric V. Linder, "Cosmological tests using redshift space clustering in BOSS DR11" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: 12, 005, 2014-12 [SCI] (Fulltext)
  29. Shun Saito*, Tobias Baldauf, Zvonimir Vlah, Uros Seljak, Teppei Okumura, Patrick McDonald, "Understanding higher-order nonlocal halo bias at large scales by combining the power spectrum with the bispectrum" , PHYSICAL REVIEW D: Volume 90, Issue 12, id.123522, 2014-12 [SCI] (Fulltext)
  30. Yong-Seon Song*, Teppei Okumura, Atsushi Taruya, "Broadband Alcock-Paczynski test exploiting redshift distortions" , PHYSICAL REVIEW D: Volume 89, Issue 10, id.103541, 2014-05 [SCI] (Fulltext)
  31. Teppei Okumura*, Uros Seljak, Zvonimir Vlah, Vincent Desjacques, "Peculiar velocities in redshift space: formalism, N-body simulations and perturbation theory" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: Issue 05, article id. 003, 2014-05 [SCI] (Fulltext)
  32. Jonathan Blazek*, Uros Seljak, Zvonimir Vlah, Teppei Okumura, "Geometric and dynamic distortions in anisotropic galaxy clustering" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: Issue 04, article id. 001, 2014-04 [SCI] (Fulltext)
  33. Eric V. Linder, MinJi Oh, Teppei Okumura, Cristiano G. Sabiu, Yong-Seon Song*, "Cosmological constraints from the anisotropic clustering analysis using BOSS DR9" , PHYSICAL REVIEW D: Volume 89, Issue 6, id.063525, 2014-03 [SCI] (Fulltext)
  34. Zvonimir Vlah*, Uros Seljak, Teppei Okumura, Vincent Desjacques, "Distribution function approach to redshift space distortions. Part V: perturbation theory applied to dark matter halos" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: Issue 10, article id. 053, 2013-10 [SCI] (Fulltext)
  35. Teppei Okumura*, Uros Seljak, Vincent Desjacques, "Distribution function approach to redshift space distortions. Part III: halos and galaxies" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: Issue 11, article id. 014, 2012-11 [SCI] (Fulltext)
  36. Zvonimir Vlah*, Uros Seljak, Patrick McDonald, Teppei Okumura, Tobias Baldauf, "Distribution function approach to redshift space distortions. Part IV: perturbation theory applied to dark matter" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: Issue 11, article id. 009, 2012-11 [SCI] (Fulltext)
  37. Teppei Okumura*, Uros Seljak, Patrick McDonald, Vincent Desjacques, "Distribution function approach to redshift space distortions. Part II: N-body simulations" , JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS: Issue 02, id. 010, 2012-02 [SCI] (Fulltext)
  38. Wenting Wang*, Y.P. Jing, Cheng Li, Teppei Okumura, Jiaxin Han, "Galaxy Clustering and Projected Density Profiles as Traced by Satellites in Photometric Surveys: Methodology and Luminosity Dependence" , ASTROPHYSICAL JOURNAL: Volume 734, Issue 2, article id. 88, 14 pp., 2011-06 [SCI] (Fulltext)
  39. Teppei Okumura*, Y. P. Jing, "Systematic Effects on Determination of the Growth Factor from Redshift-space Distortions" , ASTROPHYSICAL JOURNAL: Volume 726, Issue 1, article id. 5, 11 pp., 2011-01 [SCI] (Fulltext)
  40. Teppei Okumura*, Y. P. Jing, Cheng Li, "Intrinsic Ellipticity Correlation of SDSS Luminous Red Galaxies and Misalignment with Their Host Dark Matter Halos" , ASTROPHYSICAL JOURNAL: Volume 694, Issue 1, pp. 214-221, 2009-03 [SCI] (Fulltext)
  41. Teppei Okumura*, Y. P. Jing, "The Gravitational Shear-Intrinsic Ellipticity Correlation Functions of Luminous Red Galaxies in Observation and in the ΛCDM Model" , ASTROPHYSICAL JOURNAL LETTERS: Volume 694, Issue 1, pp. L83-L86, 2009-03 [SCI] (Fulltext)
  42. Teppei Okumura*, Takahiko Matsubara, Daniel J. Eisenstein, Issha Kayo, Chiaki Hikage, Alexander S. Szalay, Donald P. Schneider, "Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies" , ASTROPHYSICAL JOURNAL:: Volume 676, Issue 2, pp. 889-898, 2008-04 [SCI] (Fulltext)
  43. Teppei Okumura*, Takahiro Nishimichi, Keiichi Umetsu, Ken Osato, "Intrinsic Alignments and Splashback Radius of Dark Matter Halos from Cosmic Density and Velocity Fields" , , 2017-06 (Fulltext)
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