Toba Yoshiki

Research field (1)： Astronomy

Research theme for competitive and other funds (5)：

2022 - 2026 Growth history of galaxies and supermassive black holes explored by Euclid, eROSITA, and Subaru Telescope
2022 - 2026 Growth history of galaxies and supermassive black holes explored by Euclid, eROSITA, and Subaru Telescope
2019 - 2025 Precision Cosmology from the HSC-SSP optical and eROSITA X-ray surveys
2019 - 2023 Growth history of supermassive black holes probed by eROSITA, Subaru, and Seimei Telescope
2018 - 2021 多波長広域探査で解き明かす銀河と超巨大ブラックホールの共進化の物理

Papers (108)：

Takuma Izumi, Yoshiki Matsuoka, Masafusa Onoue, Michael A. Strauss, Hideki Umehata, John D. Silverman, Tohru Nagao, Masatoshi Imanishi, Kotaro Kohno, Yoshiki Toba, et al. Merging Gas-rich Galaxies That Harbor Low-luminosity Twin Quasars at z = 6.05: A Promising Progenitor of the Most Luminous Quasars. Astrophysical Journal. 2024. 972. 1
Kianhong Lee, Masayuki Akiyama, Kotaro Kohno, Daisuke Iono, Masatoshi Imanishi, Bunyo Hatsukade, Hideki Umehata, Tohru Nagao, Yoshiki Toba, Xiaoyang Chen, et al. Ongoing and Fossil Large-scale Outflows Detected in a High-redshift Radio Galaxy: [C ii] Observations of TN J0924-2201 at z = 5.174. Astrophysical Journal. 2024. 972. 1
Lilan Yang, John Silverman, Masamune Oguri, Xuheng Ding, Yoshiki Toba, Song Huang, Lalitwadee Kawinwanichakij. Size-mass relation of the brightest cluster galaxies at z ∼1. Monthly Notices of the Royal Astronomical Society. 2024. 531. 4. 4006-4016
E. Pouliasis, A. Ruiz, I. Georgantopoulos, F. Vito, R. Gilli, C. Vignali, Y. Ueda, E. Koulouridis, M. Akiyama, S. Marchesi, et al. Active galactic nucleus X-ray luminosity function and absorption function in the Early Universe (3 ≤ z ≤ 6). Astronomy & Astrophysics. 2024
Bovornpratch Vijarnwannaluk, Masayuki Akiyama, Malte Schramm, Yoshihiro Ueda, Yoshiki Matsuoka, Yoshiki Toba, Naoki Matsumoto, Angel Ruiz, Ioannis Georgantopoulos, Ektoras Pouliasis, et al. Observational properties of active galactic nucleus obscuration during the peak of accretion growth. Monthly Notices of the Royal Astronomical Society. 2024. 529. 4. 3610-3629

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MISC (68)：

GREX-PLUS Science Team, Akio K. Inoue, Yuichi Harikane, Takashi Moriya, Hideko Nomura, Shunsuke Baba, Yuka Fujii, Naoteru Gouda, Yasuhiro Hirahara, Yui Kawashima, et al. GREX-PLUS Science Book. arXiv e-Print. 2023
小麦真也, 鳥羽儀樹, 松岡良樹, 斉藤俊貴, 山下拓時. 母銀河の拡がった輝線領域からのミリ波熱制動放射観測を通したAGN-銀河相互作用の研究. 日本天文学会年会講演予稿集. 2022. 2022
Yu-Yen Chang, Bau-Ching Hsieh, Wei-Hao Wang, Yen-Ting Lin, Chen-Fatt Lim, Yoshiki Toba, Yuxing Zhong, Siou-Yu Chang. Identifying AGN host galaxies by Machine Learning with HSC+WISE. 2021
Claire Greenwell, Poshak Gandhi, Daniel Stern, Peter Boorman, Yoshiki Toba, George Lansbury, Vincenzo Mainieri, Christopher Desira. A candidate Optically Quiescent Quasar lacking narrow emission lines. 2021
Kenta Setoguchi, Yoshihiro Ueda, Yoshiki Toba, Masayuki Akiyama. Black Hole and Galaxy Coevolution in Moderately Luminous Active Galactic Nuclei at z~1.4 in SXDF. ASTROPHYSICAL JOURNAL. 2021. 909. 2

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Work history (6)：

2022/04 - 現在 National Astronomical Observatory of Japan Subaru Telescope
2021/04 - 2022/03 Nara Women's University Faculty of Science Department of Mathematical and Physical Sciences
2021/04 - 2022/03 Kyoto University Graduate School of Science Postdoc fellow
2018/04 - 2021/03 Japan Society for the Promotion of Science JSPS fellow
2016/04 - 2018/03 Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) Postdoc Fellow

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