Various activities

Tomohiro Harada

October 3, 2026

I have organised the following conferences as a member of the LOC:

• "Dynamics of Primordial Black Hole Formation III" (DPBHF3), 7-10 Sep 2026, Rikkyo University  https://sites.google.com/rikkyo.ac.jp/dpbhf3/home (Chair)
• “Geodesics: Orbits and Rays 2025” (GOR2025), 4-5 Dec 2025, Rikkyo University  https://sites.google.com/view/gor2025/english (Chair)
• “Dynamics of primoridial black hole formation” (DPBHF), 10-11 Mar 2023, Rikkyo University (Chair)
• The 28th Workshop on General Relativitty and Gravitation in Japan (JGRG28), 5-9 Nov 2018, Rikkyo University (Chair)
• The 18th Workshop on Singularities, 27-29 Dec 2016, Rikkyo University (Chair)
• The 13th Chushiro Hayashi Memorial Public Lectures, 18 Dec 2012, Rikkyo University (Chair)
• Workshop on Wormholes and Observational Testability, 27-28 Oct 2012, Rikkyo University (Chair)
• The 19th Workshop on General Relativity and Gravitation (JGRG19), 30 Nov - 4 Dec 2009, Rikkyo University (Chair)
• The 64th Annual Meeting of Japanese Physical Society, 27-30 Mar 2009, Rikkyo University and Rikkyo Junior and Senior High School
• The 9th Workshop on Singularities, 12-14 Jan 2008, Rikkyo University (Chair)
• The 19th Rironkon Symposium on Progress in Theoretical Astronomy, 25-27 Dec 2006, Rikkyo University

I have acted as a referee for the following journals:

• Astrophysical Journal (IOP, UK)
• Classical and Quantum Gravity (IOP, UK)
• EPL (EDS Sciences, IOP Publishing, Italian Physical Society)
• European Physical Journal C (EDP Sciences, Springer Science+Business Media, Società Italiana di Fisica)
• Foundations of Physics (Springer, Germany)
• General Relativity and Gravitation (Springer, Germany)
• International Journal of Modern Physics D (World Scientific, Singapore)
• Journal of Cosmology and Astroparticle Physics (IOP-SISSA, UK-Italy)
• Modern Physics Letters A (World Scientific, Singapore)
• Physical Review D (AIP, USA)
• Physical Review Letters (AIP, USA)
• Physics Letters B (Elsevier, Netherlands)
• Progress of Theoretical and Experimental Physics (Progress of Theoretical Physics) (Physical Society of Japan, Japan)
• Publications of the Astronomical Society of Japan (Astronomical Society of Japan, Japan)

Awards as editor and referee

• I have received the Springer Nature Editor of Distinction Award for the contributions to Scientific Reports, an academic journal published by Springer Nature: Editorial Contribution Award 2026 and Author Service Award 2026.
• I was selected as a Distinguished Referee of EPL (Europhysics Letters) by the European Physical Society in 2015
• I was selected as an Outstanding Referee of Physical Reviews and Physical Review Letters by the American Physical Society in 2011

Awards to research pepers

• Our paper, Chul-Moon Yoo, Tomohiro Harada, Jaume Garriga and Kazunori Kohri, PTEP2018 (12) 123E01, has been selected as one of the outstanding papers for the 31st Outstanding Paper Award of the Physical Society of Japan in 2026.

• Our paper, Chul-Moon Yoo, Tomohiro Harada, Jaume Garriga and Kazunori Kohri, PTEP2018 (12) 123E01, has been highlighted as JPS Hot Topics in 2026 as Refining Primordial Black Hole Formation with Peak Theory and a Physical Collapse Criterion.

• My review paper (Tomohiro Harada, “Primordial Black Holes: Formation, Spin and Type II,” Universe 10 (12/2024) no.12, 444 doi:10.3390/universe10120444 [arXiv:2409.01934 [gr-qc]]) has been selected as Editor's Choice in Universe on the Special Issue: Primordial Black Holes from Inflation.

• Our paper (Ken-ichi Nakao, Chul-Moon Yoo and Tomohiro Harada, “Gravastar formation: What can be the evidence of a black hole?,” Phys. Rev. D 99 (2/2019) no.4, 044027 doi:10.1103/PhysRevD.99.044027 [arXiv:1809.00124 [gr-qc]]) has been selected as a PRD Editors' Suggestion.

• Our paper (Chul-Moon Yoo, Tomohiro Harada and Hirotada Okawa, “3D Simulation of Spindle Gravitational Collapse of a Collisionless Particle System,” Class. Quant. Grav. 34 (4/2017), 105010 (17pp), doi:10.1088/1361-6382/aa6ad5 [arXiv:1611.07906 [gr-qc]]) has been included within CQG 2017 Highlights selection.

I was and have been an editorial board member of the following journals:

• Progress of Theoretical Physics (Oxford University Press-Japanese Physical Society) since 2024
• Scientific Reports (Springer Nature) since April 2015
• Journal of Gravity (Hindawi Publishing Corporation) since January 2013 to 2017

I have served as an examiner for the following doctoral dissertations:

• Jin Saito, "Constraining Lorentz-Violating Higher-Order Scalar-Tensor Theories: Post-Newtonian Bounds and Slowly Moving Black Holes", Doctor of Philosophy in Physics, Graduate School of Science, Rikkyo University, March 2026 (chief examiner)
• Indra Kumar Banerjee, “Seeing the far and the old through a gravitational wave and primordial black hole window”, Doctor of Philosophy, Department of Physical Sciences, Indian Institute of Science Education and Research Berhampur, 2025 (extrenal examiner)
• Tact Ikeda, “Theoretical Aspects of Ghost-Free Higher-Derivative Gravity”, Department of Physics, Doctor of Philosophy in Physics, Graduate School of Science, Rikkyo University, March 2024 (chief examiner)
• Ryota Higurashi, “Fermi-LAT Study of the Vela Supernova Remnant and X-ray hotspot in Supernova Remnants RX J1713.7-3946 and W50”, Department of Physics, Graduate School, Rikkyo University, March 2023
• Takuya Katagiri, “Linear Perturbations of Spherically Symmetric Black Holes and Their Stability”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2022
• Shingo Akama, “Primordial Non-Gaussianities from General Models of Inflation and Bounce', Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2021 (chief examiner)
• Keisuke Nakashi, “Circular Orbits of Particles around Compact Objects and Their Observability”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2021
• Yasutaka Koga, “Photon Surface and Relevant Phenomena”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2021
• Shin'ichi Hirano, “Toward Tests of Degenerate Higher-Order Scalar-Tensor Theories on Small and Large Scales”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2020 (chief examiner)
• Hiromu Ogawa, “Anti-Screening of the Galileon Force Around a Disk Center Hole”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2019 (chief examiner)
• Kota Ogasawara, “High Energy Particle Collision and Energy Extraction Process near a Rotating Black Hole”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2019
• Sakine Nishi, “Observational Predictions of Generalized Galiean Genesis”, Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2018 (chief examiner)
• Silvestre Aguilar-Martinez, “Critical Collapse of Newtonian Fluids”, Doctor of Philosophy in Physics, The University of British Columbia, August 2015 (external examiner)
• Syo Kamata, “Research for $\gamma_{5}$-hermiticity in the minimal doubling fermions”, Doctor of Philosophy in Physics, Department of Physics, Graduate School of Science, Rikkyo University, March 2014 (chief examiner)
• Tomo Tanaka, ”Analysis of Fundamental Problems in Astrophysics based on Loop Quantum Gravity”, Doctor of Science, Department of Physics, Graduate School of Science, Rikkyo University, September 2013 (external examiner)
• Naoki Tsukamoto, “Search for exotic gravitating objects with gravitational lensing” Doctor of Philosophy in Physics, Department of Physics, Graduate School of Science, Rikkyo University, September 2013
• Hioki Kenta, “Measurement of the Spin Parameter of a Black Hole by Observation of its Shadow”, Doctor of Science, Departmemt of Physics and Applied Physics, Graduate School of Science, Waseda University, March 2011 (external examiner)
• Masahiro Shimano, “Early universe models in loop quantum cosmology” Doctor of Philosophy in Physics, Department of Physics, Graduate School, Rikkyo University, March 2011
• Dai Takei, “An X-ray study of classical novae”, Doctor of Philosophy in Physics, Department of Physics, Graduate School of Science, Rikkyo University, March 2011 (chief examiner)
• Sehar Aziz, “Kinematic Self-Similar Solutions and their Applications”, PhD in Mathematics, University of the Punjab, 2008 (external examiner)
• Shoko Kanno, 中性子過剰核74Ni における陽子芯偏極, Doctor of Philosophy in Physics, Department of Physics, Graduate School of Science, Rikkyo University, March 2008
• Yoichi Chizaki, 重力波背景上の弦理論の共変的BRST量子化, Doctor of Philosophy in Physics, Department of Physics, Graduate School of Science, Rikkyo University, March 2007
• Yuichi Sekiwa, “Thermodynamics of de Sitter Black Holes – Thermal Cosmological Constant –”, Doctor of Philosophy in Physics, Department of Physics, Graduate School of Science, Rikkyo University, September 2006

I have served as a referee for the following research programmes:

• The Selection Committee members for the JPS Leading Initiative for Excellent Young Researchers（LEADER）(2019)
• JSPS Research Fellwoships for Young Scientists and International Programmes (2017-2018)
• OPUS grant for National Science Centre (Narodowe Centrum Nauki (NCN)) in Poland 2016
• Discovery Grant application for the Natural Sciences and Engineering Research Council of Canada (NSERC) in 2012-2013
• Vidi-research proposal for the Netherlands Organisation for Scientific Research (NWO, the Dutch research council) in 2012

I have been a representative of Japanese Society on General Relativity and Gravitation since September 2021.