Graduate School of Science Department of Physics 

Associate Professor  2025.09 - Now

School of Science Department of Physics 

Associate Professor  2025.09 - Now

Ph.D. in Physics (   Hanyang University )

Natural Science / Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

Natural Science / Astronomy

Dr. Jihyun Kim’s research focuses on ultra-high-energy cosmic rays (UHECRs), and she has been a key contributor to the Telescope Array project, the largest UHECR observatory in the Northern Hemisphere. She investigates their nature and origin by analyzing arrival direction distributions and spectral features. Understanding UHECRs remains one of the most important unresolved questions in modern physics and astrophysics.

Her recent work includes identifying a new excess of cosmic ray events potentially linked to the Perseus-Pisces Supercluster, as well as examining the declination dependence in the cosmic ray energy spectrum. These studies advance our understanding of how UHECRs originate and propagate across the universe.

University of Utah   Department of Physics and Astronomy   Senior Research Associate

2020.11 - 2025.08

Osaka City University   Graduate School of Science, Department of Physics   Postdoctoral Researcher

2018.10 - 2020.08

Ulsan National Institute of Science and Technology   Department of Physics   Postdoctoral Researcher

2014.03 - 2018.09

First Time‐Resolved Leader Spectra Associated With a Downward Terrestrial Gamma‐Ray Flash Detected at the Telescope Array Surface Detector

N. Kieu, R. U. Abbasi, J. W. Belz, P. R. Krehbiel, M. A. Stanley, M. M. F. Saba, F. J. Gordillo‐Vazquez, M. Passas‐Varo, T. Warner, W. Rison, D. Rodeheffer, D. R. da Silva, T. Knight, D. Mazzucco, I. T. Cruz, J. Mazich, R. LeVon, J. Remington, K. Smout, A. Petrizze, I. Buckland, T. Abu‐Zayyad, D. R. Bergman, M. Allen, W. Campbell, T. Fujii, K. Endo, A. Fedynitch, K. Fujisue, B. G. Cheon, M. Fukushima, K. Fujita, Z. Gerber, W. Hanlon, G. Furlich, N. Globus, R. Higuchi, D. Ivanov, H. He, K. Kawata, C. C. H. Jui, E. Kido, H. B. Kim, JiHee Kim, JiHyun Kim, S. W. Kim, I. Kharuk, R. Kobo, I. Komae, K. Komatsu, K. Komori, C. Koyama, M. Kudenko, M. Kuroiwa, Y. Kusumori, M. Kuznetsov, Y. J. Kwon, N. Hayashida, S. Jeong, D. Ikeda, K. Hibino, Y. Kawachi, K. H. Lee, M. J. Lee, B. Lubsandorzhiev, A. Matsuzawa, J. P. Lundquist, J. N. Matthews, J. A. Mathews, K. Mizuno, M. Mori, M. Murakami, S. Nagataki, M. Nakahara, T. Nakamura, T. Nakayama, Y. Nakayama, S. Ogio, T. Ishii, K. Kadota, O. Kalashev, H. Ohoka, K. Kasahara, N. Okazaki, F. Kakimoto, A. Oshima, M. Onishi, I. H. Park, M. Potts, H. Oshima, C. Rott, S. Ozawa, K. Y. Park, M. Przybylak, T. Nonaka, M. S. Pshirkov, G. I. Rubtsov, D. Ryu, R. Sakamoto, H. Sagawa, T. Sako, N. Sakaki, S. Sakurai, D. Sato, S. Sato, T. Shibata, N. Sakurai, J. Shikita, K. Sekino, K. Shinozaki, T. A. Stroman, B. K. Shin, B. T. Stokes, M. Takeda, A. Taketa, R. Takeishi, H. Shimodaira, M. Takita, Y. Takagi, J. D. Smith, P. Sokolsky, Y. Tameda, S. B. Thomas, M. Tanaka, P. Tinyakov, I. Tkachev, T. Tomida, H. S. Shin, G. B. Thomson, K. Takahashi, K. Tanaka, F. Urban, S. Udo, Y. Tsunesada, Y. Zhezher, M. Vrábel, D. Warren, K. Yamazaki, I. A. Vaiman, J. Zvirzdin, Z. Zundel, S. Troitsky

Journal of Geophysical Research: Atmospheres   129 ( 24 )   2024.12（ ISSN:2169897X ） （ eISSN:21698996 ）

Recent Findings from the Telescope Array Experiment Invited International coauthorship International conference

Jihyun Kim

The 60th Rencontres de Moriond on Very High Energy Phenomena in the Universe  2026.03 

Exploring Ultra-High Energy Cosmic Rays with the Telescope Array International coauthorship Domestic conference

Jihyun Kim

2025 Nambu-Einstein Seminar  2025.11 

Detection Techniques and Instrumentation in the Telescope Array for Ultra-High-Energy Cosmic Rays International coauthorship International conference

Jihyun Kim

2025 Fall Meeting of the Korean Space Science Society  2025.10 

Detection Techniques and Instrumentation in the Telescope Array for Ultra-High-Energy Cosmic Rays Invited International coauthorship International conference

Jihyun Kim

International Collaboration Workshop on Space Science & Technology  2025.10 

Investigations into the mysteries of Ultra-High Energy Cosmic Rays by the Telescope Array Invited International coauthorship International conference

Jihyun Kim

Space and Cosmic Ray Physics Online Seminar at University of Maryland  2025.10 

サイエンスフロンティアA（物理学）

2025   Intensive lecture   Graduate school

サイエンスフロンティアB（物理学）

2025   Intensive lecture   Graduate school

物理学卒業演習B

2025   Weekly class   Undergraduate

物理学卒業研究B

2025   Intensive lecture   Undergraduate

特別実験・特別理論演習

2025   Intensive lecture   Undergraduate

At a kickoff symposium of the International Research and Education Center at Osaka Metropolitan University, aimed at fostering a more diverse environment for international researchers and students, I reviewed and analyzed the current situation and discussed how to strengthen and implement our efforts to make OMU a global hub for international talent.

Field category :Education

2025.12

We held a joint symposium between the International Research and Education Center at Osaka Metropolitan University and Universidad Mayor de San Andrés. I introduced the Department of Physics, as well as my research fields, to prospective international students in Bolivia so that they could consider Osaka Metropolitan University as a possible destination for their studies.

Field category :Research

Country name :Bolivia   2026.03

I conducted in-depth interviews with four international graduate students currently enrolled in the Graduate School of Science at Osaka Metropolitan University in order to better understand their lived experiences, identify friction points in the admissions process, and uncover specific support needs. These interview sessions were conducted as part of the effort to renovate the Graduate School of Science website in order to attract more international students. I summarized the interview findings, which were used as a basis for my presentation at a kickoff symposium for the International Research and Education Center and will also be uploaded to the website.

Field category :Education

2025.10

Interviews with Current International Students

2025.10