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J-GLOBAL ID：200901025729045501   Update date: Jan. 30, 2024

Katsuya Okoshi

オオコシ カツヤ | Katsuya Okoshi
Research field  (1)： Astronomy
Research keywords  (1)： Observational Cosmology / Galaxy Formation / Quasar Absorption System
Research theme for competitive and other funds  (5)：
  • 2016 - 2020 Quasar absorption systems as a probe of the galaxy and the circum galactic medium
  • 2009 - 2011 Origin and Evolution of Quasar Absorption Systems and Primordial Galaxies
  • 2008 - 2010 Development of Next-generation Infrared High-resolution Spectrograph for Studying the Cosmic Re-ionization Era with High Redshift Gamma-ray Bursts
  • 2007 - クエーサー吸収線系で探る銀河の起源と進化
  • 2007 - Probing Origin and Evolution of Galaxy Through Quasar Absorption Systems
Papers (27)：
  • Rikako Ishimoto, Nobunari Kashikawa, Daichi Kashino, Kei Ito, Yongming Liang, Zheng Cai, Takehiro Yoshioka, Katsuya Okoshi, Toru Misawa, Masafusa Onoue, et al. The physical origin for spatially large scatter of IGM opacity at the end of reionization: The IGM Lyα opacity-galaxy density relation. Monthly Notices of the Royal Astronomical Society. 2022. 515. 4. 5914-5926
  • Toru Misawa, Rikako Ishimoto, Satoshi Kobu, Nobunari Kashikawa, Katsuya Okoshi, Akatoki Noboriguchi, Malte Schramm, Qiang Liu. Exploratory Study of the Transverse Proximity Effect around BAL Quasars. The Astrophysical Journal. 2022. 933. 239-251
  • Katsuya Okoshi, Yosuke Minowa, Nobunari Kashikawa, Toru Misawa, Daichi Kashino, Hajime Sugai, Kazuya Matsubayashi, Atsushi Simono, Shinobu Ozaki. Multiple MgII Absorption Systems in the Lines of Sight to Quadruply Lensed Quasar H1413+1143. The Astronomical Journal. 2021. 162. 5. 175
  • Kazuyuki Ogura, Masahiro Nagashima, Rhythm Shimakawa, Masao Hayashi, Masakazu A. R. Kobayashi, Taira Oogi, Tomoaki Ishiyama, Yusei Koyama, Ryu Makiya, Katsuya Okoshi, et al. Quantifying the Effect of Field Variance on the Hα Luminosity Function with the New Numerical Galaxy Catalog (ν 2GC). The Astrophysical Journal. 2020. 895. 1. 9-9
  • Okoshi, K., Minowa, Y., Kashikawa, N., Koyamada, S., & Misawa, T. Multiple Absorption Systems in the Lines of Sight to Quadruply Lensed Quasar H1413+1143 As a Probe of the Circumgalactic medium around Dwarf Galaxy. Dwarf Galaxies: From the Deep Universe to the Present, Proceedings of the International Astronomical Union, IAU Symposium S344, Cambridge University Press. 2019. 14. 305-308
ｍore...
MISC (42)：
  • Ogura, K., & Okoshi, K. Current Status of QALs (2)---Star-forming galaxies, environments and DLAs. Cosmic Shadow 2018 ~クエーサー吸収線系でみる宇宙~. 2019. 7-10
  • Okoshi, K., & Ogura, K. Current Status of QAL (1) - Quasar Absorption Line System -. Cosmic Shadow 2018 ~クエーサー吸収線系でみる宇宙~. 2019. 1-6
  • Ogura, K, Okoshi, K. Current Status of QALs (2)---Star-forming galaxies, environments and DLAs. Cosmic Shadow 2018 ~クエーサー吸収線系でみる宇宙~. 2019. 7-10
  • Okoshi, K, Ogura, K. Current Status of QAL (1) - Quasar Absorption Line System -. Cosmic Shadow 2018 ~クエーサー吸収線系でみる宇宙~. 2019. 1-6
  • Ryu Makiya, Motohiro Enoki, Tomoaki Ishiyama, Masakazu A.R. Kobayashi, Masahiro Nagashima, Takashi Okamoto, Katsuya Okoshi, Taira Oogi, Hikari Shirakata. VizieR Online Data Catalog: New Numerical Galaxy Catalog (ν^2GC). VizieR Online Data Catalog. 2016
ｍore...
Books (5)：
  • 2022年度版 基礎工学実験
    学術図書出版 2022 ISBN:9784780610062
  • 2021年度版 基礎工学実験
    学術図書出版 2021 ISBN:9784780609301
  • 2020年度版 基礎工学実験
    学術図書出版社 2020 ISBN:9784780608120
  • 2019年度版 基礎工学実験
    学術図書出版社 2019 ISBN:9784780607482
  • 2017年度版 基礎工学実験
    学術図書出版社 2017 ISBN:9784780605587
Lectures and oral presentations  (84)：
  • A probe of circumgalactic medium through absorption systems in lines of sight toward lensed quasars
    (Galaxy formation meeting 2023)
  • IGM の光学的厚みとLAE 密度の関係から探る宇宙再電離非一様性の起源
    (日本天文学会2022年秋季年会 2022)
  • すばる望遠鏡HSC で探る宇宙再電離非一様性の物理的起源
    (日本天文学会2021年秋季年会 2021)
  • 準解析的銀河形成モデルν2GCによるHα輝線銀河モデル
    (第26回天体スペクトル研究会 2021)
  • Absorption Systems in Lines of Sight toward Cloverleaf
    (The blind search for hidden galaxies in an abundant line of sight 2020)
ｍore...
Education (5)：
  • - 1998 Osaka University Graduate School, Division of Natural Science
  • - 1994 The University of Tokyo Graduate School, Division of Science
  • - 1992 Tokyo Institute of Technology Faculty of Science
  • The University of Tokyo Graduate School, Division of Science
  • Osaka University Graduate School, Division of Natural Science
Professional career (1)：
  • Doctor of Science (Osaka University)
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