Rchr
J-GLOBAL ID：202301018339883968
Update date: Jan. 30, 2024
Obata Ippei
オバタ イッペイ | Obata Ippei
Affiliation and department：
Job title：
Project Researcher
Research keywords (2)：
Cosmology
, Theoretical Physics
Research theme for competitive and other funds (1)：
- 2021 - 2026 Cosmological Research in Axion Physics: Phenomenology of Parity-Violation in Polarized Photon
Papers (39)：
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Yuichiro Nakai, Ryo Namba, Ippei Obata, Yu-Cheng Qiu, Ryo Saito. Can we explain cosmic birefringence without a new light field beyond Standard Model?. Journal of High Energy Physics. 2024. 2024. 1
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Yuichiro Nakai, Ryo Namba, Ippei Obata. Peaky production of light dark photon dark matter. Journal of Cosmology and Astroparticle Physics. 2023. 2023. 08. 032-032
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Caner Unal, Alexandros Papageorgiou, Ippei Obata. Axion-Gauge Dynamics During Inflation as the Origin of Pulsar Timing Array Signals and Primordial Black Holes. arXiv. 2023
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Toshiya Namikawa, Ippei Obata. Cosmic birefringence tomography with polarized Sunyaev Zel'dovich effect. arXiv. 2023
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Yuka Oshima, Hiroki Fujimoto, Jun'ya Kume, Soichiro Morisaki, Koji Nagano, Tomohiro Fujita, Ippei Obata, Atsushi Nishizawa, Yuta Michimura, Masaki Ando. First Results of Axion Dark Matter Search with DANCE. arXiv. 2023
ｍore...
Lectures and oral presentations (1)：
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Axion dark matter search with the observations of cosmic birefringence
(Dark Matter 2023: From the Smallest to the Largest Scales 2023)
Education (2)：
- 2013 - 2018 Kyoto University Graduate School of Science Division of Physics and Astronomy
- 2009 - 2013 Kyoto University Faculty of Science Faculty of Science
Work history (3)：
- 2022/10 - 現在 The University of Tokyo Kavli Institute for the Physics and Mathematics of the Universe Project Researcher
- 2020/04 - 2022/09 Japan Society for the Promotion of Science Max-Planck-Institute for Astrophysics JSPS overseas fellow
- 2018/04 - 2020/03 The University of Tokyo Institute for Cosmic Ray Research Postdoc
Awards (1)：
- 2022/03 - Particle Physics Research Scholarship Foundation of Japan The 16th Seitaro Nakamura Prize New Search Method for Axion Dark Matter Using Birefringence
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