Publication — Masaya Amo

• Masaya Amo, "Violating Weak Cosmic Censorship in AdS3 via Gedanken Experiment," [arXiv:2508.05384] (2025).
• Masaya Amo, Keisuke Izumi, Hirotaka Yoshino, Yoshimune Tomikawa, Tetsuya Shiromizu, "A generalization of photon sphere based on escape/capture cone," Eur. Phys. J. C 84 638 [arXiv:2305.11208] (2024).
• Masaya Amo, Antonia M. Frassino, Robie A. Hennigar, "Entropy Bounds for Rotating AdS Black Holes," Phys. Rev. Lett. 131 241401, [arXiv:2307.03011] (2023).
• Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa, Tetsuya Shiromizu, Hirotaka Yoshino, "Asymptotic behavior of null geodesics near future null infinity IV: Null-access theorem for generic asymptotically flat spacetime," Phys. Rev. D 107 124050, [arXiv:2305.01767] (2023).
• Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa, Hirotaka Yoshino, Tetsuya Shiromizu, "Asymptotic behavior of null geodesics near future null infinity III: Photons towards inward directions," Phys. Rev. D 106 084007, [arXiv:2208.00822] (2022) [erratum: Phys. Rev. D 107, 084007 (2023)].
• Masaya Amo, Tetsuya Shiromizu, Keisuke Izumi, Hirotaka Yoshino, Yoshimune Tomikawa, "Asymptotic behavior of null geodesics near future null infinity II: curvatures, photon surface and dynamically transversely trapping surface," Phys. Rev. D 105 064074, [arXiv:2110.10917] (2022).
• Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa, Hirotaka Yoshino, Tetsuya Shiromizu, "Asymptotic behavior of null geodesics near future null infinity: Significance of gravitational waves," Phys. Rev. D 104 064025, [arXiv:2106.03150] (2021) [erratum: Phys. Rev. D 107, 029901 (2023)].

• Masaya Amo, Aiko Takafuji, and Naho Fujita, "The Mysterious Sounds of Auroras (オーロラの音の謎に迫る)" The astronomical herald (天文月報) 113 488–496, 2020.

• "Violations of weak Cosmic Censorship Conjecture in AdS3," JOINT WORKSHOP ON GENERAL RELATIVITY AND COSMOLOGY 2025 (JGRC3), Mar. 2025, Saitama, Poster.
• "Violations of weak Cosmic Censorship Conjecture in AdS3," Gravity 2025: New Horizon of Black Hole Physics, Jan. 2025, Kyoto, Oral.
• "Violations of weak Cosmic Censorship Conjecture in AdS3," JGRG33, Dec. 2024, Osaka, Oral.
• "Entropy-Bound Conjecture for Rotating AdSBlack Holes," COSMO'24, Oct. 2024, Kyoto, Oral.
• "Violations of Weak Cosmic Censorship Conjecture in AdS," The 3rd young researchers' workshop of the Extreme Universe Collaboration, Sep. 2024, Otaru, Poster.
• "Entropy Bounds for Rotating AdS Black Holes," The 2nd young researchers' workshop of the Extreme Universe Collaboration, Feb. 2024, Shiga, Oral.
• "Entropy Bounds for Rotating AdS Black Holes," Gravity and Cosmology 2024, Feb. 2024, Kyoto, Oral.
• "Entropy Bounds for Rotating AdS Black Holes," JGRG32, Dec. 2023, Nagoya, Oral.
• "New Inequalities in Extended Black Hole Thermodynamics," Quantum Information, Quantum Matter and Quantum Gravity, Sep. 2023, Kyoto, Poster.
• "New Inequalities in Extended Black Hole Thermodynamics," Gravity - New perspectives from strings and higher dimensions, 2023, Benasque, Poster.
• "A generalization of photon sphere based on escape cone" 23rd Eastern Gravity Meeting, Jun. 2023, Rhode Island, Oral.
• "Generalization of the photon sphere referring to null infinity" JGRG31, Oct. 2022, Tokyo, Oral.
• "Asymptotic behavior of null geodesics near future null infinity" 23rd International Conference on General Relativity and Gravitation (GR23), Jul. 2022, Online, Oral.
• "Asymptotic properties of null geodesics near null infinity" Asia-Pacific School and Workshop on Gravitation and Cosmology 2022, Mar. 2022, Online, Oral.
• "Asymptotic behavior of null geodesics near future null infinity: Relationship to gravitational waves and curvature" JGRG30, Dec. 2021, Online, Oral.
• Masaya Amo et al. "Investigation of the Spatial Cognition in Microgravity" The 3rd International Moon Village Workshop & Symposium, Dec. 2019, Kyoto, Poster.

• "Potential Violation of Weak Cosmic Censorship in AdS3," The Physical Society of Japan 2025 Spring Meeting, Mar. 2025, Online, Oral.
• "拡張ブラックホール熱力学における新しい不等式予想の提唱," Rironkon Symposium, Dec. 2024, Tokyo, Oral.
• "拡張ブラックホール熱力学における新しい不等式予想の提唱," The Physical Society of Japan 78th Annual Meeting, Sep. 2023, Sendai, Oral.
• "光的無限遠への光の到達条件を基にした光子球の一般化," Workshop on General Relativity, Cosmology, and Black Hole Information Paradox, Sep. 2022, Nagoya, Oral.
• "光的無限遠を参照した光子球の一般化," The Physical Society of Japan 2022 Autumn Meeting, Sep. 2022, Okayama, Oral.
• "photon sphereの一般化「dark horizon」," 第52回天文・天体物理若手夏の学校, Aug. 2022, online, Oral.
• "無限遠近傍における近似的photon surfaceの存在条件," The Physical Society of Japan 2022 Spring Meeting, Mar. 2022, online, Oral.
• "Null infinityを参照したphoton sphereの一般化," 第22回「特異点と時空、および関連する物理」研究会, Dec. 2021, online, Oral.
• "光的測地線の光的無限遠への到達条件," The Physical Society of Japan 2021 Autumn Meeting, Sep. 2021, online, Oral.
• "4次元 Einstein-Gauss-Bonnet理論における静的球対称ブラックホールの周りの性質," 第50回天文・天体物理若手夏の学校, Aug. 2020, online, Oral.
• "京都系外惑星観測入門," 第12回宇宙ユニットシンポジウム Feb. 2019, Kyoto, Poster.
• "将来の有人宇宙ミッションに向けた京大教育プログラム," 第12回宇宙ユニットシンポジウム, Feb. 2019, Kyoto, Oral.
• "微小重力空間における空間認知の検討," 12th Unit of Synergetic Studies for Space, Feb. 2019, Kyoto, Poster.
• "オーロラの音のメカニズムに迫る," 11th Unit of Synergetic Studies for Space, Feb. 2018, Kyoto, Poster.

• "AdS3における弱い宇宙検閲官仮説の反例探査 (Violating Weak Cosmic Censorship in AdS_3 via Gedanken Experiment)" at 第5回素粒子論学生交流会, Keio University, Oct. 2024.
• "定常AdSブラックホールの面積の上限予想 (Conjecture on upper bound of horizon area for stationary AdS black hole)" at 第8回ブラックホール研究会 (The 8th Black hole Seminar), Nihon University, Mar. 2024.
• "定常AdSブラックホールの面積の上限予想 (Conjecture on upper bound of horizon area for stationary AdS black hole)", Osaka Metropolitan University, Jan. 2024.
• "null測地線の無限遠近傍の漸近的振る舞い" KMI主催 分野横断セミナー, Dec. 2022.
• "The Mysterious Sounds of Auroras (オーロラの音の謎に迫る)", Unit of Synergetic Studies for Space Seminar Dec. 2017.

• JOINT WORKSHOP ON GENERAL RELATIVITY AND COSMOLOGY 2025 (JGRC3), Honorable mention, Mar. 2025
• Student Presentation Award of the Physical Society of Japan, Oct. 2023.
• Overseas Challenge Program for Young Researchers, 1st Apr. – 29th Jun., 1,400,000 yen.
• The ANRI Fellowship, for 2023 fiscal year, 500,000 yen.
• Presentation Award at The 31st Workshop on General Relativity and Gravitation in Japan (JGRG31), Oct. 2022.
• Student Presentation Award of the Physical Society of Japan, Oct. 2022.
• Oral Award at 52nd Summer School for students and young researchers on astronomy and astrophysics, Aug. 2022.
• Grant-in-Aid for JSPS Fellows No. 22J20147, Apr. 2022 – Mar. 2025 2,400,000 yen.
• Oral Award at 50th Summer School for students and young researchers on astronomy and astrophysics, Aug. 2020.
• The most outstanding project award at Spring School at Institute for Cosmic Ray Research of the University of Tokyo, Observational Cosmology Group, Mar. 2019.
• 11th Unit of Synergetic Studies for Space, Poster Presentation, Outstanding Award, Feb. 2018.
• SPEC: Student Projects for Enhancing Creativity 2017, 500,000 yen, Oct. 2017.
• The 3rd Omoro Challenge, 300,000 yen, Jun. 2017.