Employment
2025 Apr. -
Non-tenured Assistant Professor at Waseda Institute for Advanced Study (Waseda University)
2023 Nov. - 2025 Mar.
Kavli Astrophysics Postdoctoral Fellow at Kavli IPMU (Univ. of Tokyo)
2021 Dec. - 2023 Oct
Kavli Astrophysics Postdoctoral Fellow at KIAA (Peking University)
2021 Oct. - 2021 Nov.
Non-affiliated visitor to Kavli IPMU (Univ. of Tokyo)
2018 Apr. - 2021 Sep
Post-doctral researcher at Max-Planck-Institut fuer Astronomie, Germany (Dr. F.Walter's group)
2015 Apr. - 2018 Mar.
JSPS Research Fellow (DC1) at National Astronomical Observatory of Japan
Education
2013 Apr. - 2018 Mar.
Ph.D. at Graduate University for Advanced Studies (SOKENDAI)
/ National Astronomical Observatory of Japan (supervisor: Dr. N.Kashikawa)
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Title of Ph.D. thesis: "Exploration of the First Billion Years with High-Redshift Quasars"
2015 Nov. - 2016 Jan.
Research Internship at Max-Planck-Institut fuer Astronomy, Germany (Dr. F.Walter's group)
2009 Apr. - 2013 Mar.
B.S. at the University of Tokyo, Department of Astronomy, School of Science
2002 Apr. - 2008 Mar.
Eiko Gakuen Junior and Senior High School
Fields of Interests
High-redshift quasar discovery
Formation and early growth history of supermassive black holes
Quasar host galaxies
Chemical enrichment of broad-line-region
Large-scale galaxy environments of quasars
Metal intervening systems
Dust-reddened/obscured quasars
Wide-field surveys
Observation Experience
JWST/NIRCam, NIRSpec
Subaru/HSC, FOCAS, MOIRCS, SWIMS
Gemini/GNIRS
VLT/XSHOOTER, FORS2
Keck/MOSFIRE
Magellan/FIRE
Total awarded times in 8-10m class telescopes as PIs: >200 hours
Visitor mode observations: >10 nights (Subaru), 1 night (Keck), 5 nights (Magellan)
Remote observations for the HSC-SSP project: 10 nights
Co-Is in >10 successful proposals of ground-based opt/NIR telescopes, ALMA, and HST
Large Projects
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PI of a JWST Cy2 GO program ``Full Characterization of Starlight from a z=6.4 Quasar Host Galaxy" (ID 3859, NIRCam, 11.0hr, small category)
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Co-PI of a JWST Cy2 GO program ``Unveiling Obscured Growth of Supermassive Black Holes in the Epoch of Reionization" (ID 3417, NIRSpec, 23.2hr, small category)
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PI of a JWST Cy1 GO program ``A Complete Census of SMBHs and Host Galaxies at z=6" (ADS link) (ID 1967, NIRSpec+NIRCam, 49.5hr, medium category)
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Hyper Suprime-Cam Subaru Strategic Program (2013-, AGN group)
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Euclid (2020-, primeval universe science working group, Blue Grism working group)
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Pan-Starrs1 (2018-, quasar search)
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Nancy Grace Roman telescope (2020-, Japanese internal working member in cosmic dawn group)
Award
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FY2025 Astronomical Society of Japan's Young Astronomer Award for ``Revealing diverse physical properties of distant galaxies by observations" (link)
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FY2022 PASJ Excellent Paper Award for "Subaru High-z Exploration of Low Low-Luminosity Quasars (SHELLQs). II. Discovery of 32 quasars and luminous galaxies at 5.7 < z ≤ 6.8", Matsuoka, Onoue, Kashikawa et al. (2018), PASJ, 70, SP1, S35
Community Service
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Peer review: the Astrophysical Journal, the Monthly Notices of the Royal Astronomical Society, the Astronomical Journal, Astronomy & Astrophysics
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Conference Organizer (co-chair): "Probing the Genesis of Supermassive Black Holes", Kavli IPMU, 2024 Nov