Basic Information

Email Address

• Email Address

  yoneda.hiroki.4jkyoto-u.ac.jp

Professional Memberships

• 日本天文学会
• 日本物理学会

Academic Degree

• 23 Mar. 2017

  東京大学修士（理学）
• 23 Mar. 2020

  東京大学博士（理学）

Academic Resume (Undergraduate School/Majors)

• 東京大学, 理学部物理学科, 卒業

Research History

• From Apr. 2025, To Present

  Kyoto University, The Hakubi Center for Advanced Research, assistant professor
• From Feb. 2023, To Mar. 2025

  University of Würzburg, Chair for Astronomy, Postdoctoral Researcher
• From Apr. 2020, To Jan. 2023

  RIKEN, RIKEN Nishina Center for Accelerator-Based Science, Special Postdoctoral Researcher

ID,URL

• ORCID ID

  0000-0002-5345-5485

• J-Global ID

  202501012824455512

• Researcher number

  30881867

researchmap URL

• https://researchmap.jp/hiyoneda

Research

Research Interests

• positron
• neutron star
• image deconvolution
• MeV gamma-ray detector
• X-ray/gamma-ray astrophysics

Research Areas

• Natural sciences, Astronomy
• Natural sciences, Particle, nuclear, cosmic-ray, and astrophysics - experiment

Papers

• Imaging the positron annihilation line with 20 years of INTEGRAL/SPI observations

  Hiroki Yoneda; Thomas Siegert; Saurabh Mittal

  Astronomy & Astrophysics, Oct. 2025

  
• Sub-GeV dark matter and MeV gamma-ray detection with COSI

  Yu Watanabe; Shigeki Matsumoto; Christopher M Karwin; Tom Melia; Michela Negro; Thomas Siegert; Yuki Watanabe; Hiroki Yoneda; Tadayuki Takahashi

  Journal of High Energy Physics, 10 Sep. 2025

  
• Langevin Compton Imaging: A new method of visualizing radioactive sources based on Markov chain Monte Carlo

  Y. Tsuzuki; S. Ikeda; H. Yoneda; T. Takahashi

  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Nov. 2025

  
• Enhancing Compton telescope imaging with maximum a posteriori estimation

  H. Yoneda; T. Siegert; I. Martinez-Castellanos; S. Gallego; C. Karwin; H. Bates; S. E. Boggs; C. Y. Huang; A. Joens; S. Matsumoto; S. Mittal; E. Neights; M. Negro; U. Oberlack; K. Okuma; S. Pike; J. Roberts; F. Rogers; Y. Sheng; T. Takahashi; A. Valluvan; Y. Watanabe; D. Hartmann; C. Kierans; J. Tomsick; A. Zoglauer

  Astronomy & Astrophysics, May 2025

  
• Imaging and Spectral Fitting of Bright Gamma-Ray Sources with the COSI Balloon Payload

  Jarred Roberts; Steven Boggs; Thomas Siegert; John Tomsick; Marco Ajello; Peter von Ballmoos; Jacqueline Beechert; Floriane Cangemi; Gallego savitri; Pierre Jean; Christopher Karwin; Carolyn Kierans; Hadar Lazar; Alex Lowell; Israel Martinez-Castellanos; Sean Pike; Clio Sleator; Yong Sheng; Hiroki Yoneda; Andreas Zoglauer

  The Astrophysical Journal, 01 Feb. 2025

  
• A Study of Afterglow Signatures in NaI and CsI Scintillator Modules for the Background and Transient Observer Instrument on COSI

  Hannah Gulick; Hiroki Yoneda; Tadayuki Takahashi; Claire Chen; Kazuhiro Nakazawa; Shunsaku Nagasawa; Mii Ando; Keigo Okuma; Alyson Joens; Samer Al Nussirat; Yasuyuki Shimizu; Kaito Fujisawa; Takayoshi Kohmura; Kouichi Hagino; Hisashi Kitamura; Andreas Zoglauer; Juan Carlos Martinez Oliveros; John A. Tomsick

  2025

  
• Gamma-ray line emission from the Local Bubble

  Thomas Siegert; Michael M. Schulreich; Niklas Bauer; Rudi Reinhardt; Saurabh Mittal; Hiroki Yoneda

  Astronomy & Astrophysics, Sep. 2024

  
• Demonstration of nuclear gamma-ray polarimetry based on a multi-layer CdTe Compton camera

  S. Go; Y. Tsuzuki; H. Yoneda; Y. Ichikawa; T. Ikeda; N. Imai; K. Imamura; M. Niikura; D. Nishimura; R. Mizuno; S. Takeda; H. Ueno; S. Watanabe; T. Y. Saito; S. Shimoura; S. Sugawara; A. Takamine; T. Takahashi

  Scientific Reports, 09 Feb. 2024

  
• Further Evidence for the ∼9 s Pulsation in LS 5039 from NuSTAR and ASCA

  Kazuo Makishima; Nagomi Uchida; Hiroki Yoneda; Teruaki Enoto; Tadayuki Takahashi

  The Astrophysical Journal, 01 Dec. 2023

  
• Line profile of nuclear de-excitation gamma-ray emission from very hot plasma

  Hiroki Yoneda; Felix Aharonian; Paolo Coppi; Thomas Siegert; Tadayuki Takahashi

  Monthly Notices of the Royal Astronomical Society, 21 Sep. 2023

  
• The cosipy library: COSI's high-level analysis software

  Israel Martinez-Castellanos; Savitri Gallego; Chien-You Huang; Chris Karwin; Carolyn Kierans; Jan Peter Lommler; Saurabh Mittal; Michela Negro; Eliza Neights; Sean N. Pike; Yong Sheng; Thomas Siegert; Hiroki Yoneda; Andreas Zoglauer; John A. Tomsick; Steven E. Boggs; Dieter Hartmann; Marco Ajello; Eric Burns; Chris Fryer; Alexander Lowell; Julien Malzac; Jarred Roberts; Pascal Saint-Hilaire; Albert Shih; Clio Sleator; Tadayuki Takahashi; Fabrizio Tavecchio; Eric Wulf; Jacqueline Beechert; Hannah Gulick; Alyson Joens; Hadar Lazar; Juan Carlos Martinez Oliveros; Shigeki Matsumoto; Tom Melia; Mark Amman; Dhruv Bal; Peter von Ballmoos; Hugh Bates; Markus Böttcher; Andrea Bulgarelli; Elisabetta Cavazzuti; Hsiang-Kuang Chang; Claire Chen; Che-Yen Chu; Alex Ciabattoni; Luigi Costamante; Lente Dreyer; Valentina Fioretti; Francesco Fenu

  Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023), 15 Aug. 2023

  
• Unveiling Properties of the Nonthermal X-Ray Production in the Gamma-Ray Binary LS 5039 Using the Long-term Pattern of Its Fast X-Ray Variability

  Hiroki Yoneda; Valenti Bosch-Ramon; Teruaki Enoto; Dmitry Khangulyan; Paul S. Ray; Tod Strohmayer; Toru Tamagawa; Zorawar Wadiasingh

  The Astrophysical Journal, 01 May 2023

  
• Strong Polarization of a J = 1 / 2 to 1 / 2 Transition Arising from Unexpectedly Large Quantum Interference

  Nobuyuki Nakamura; Naoki Numadate; Simpei Oishi; Xiao-Min Tong; Xiang Gao; Daiji Kato; Hirokazu Odaka; Tadayuki Takahashi; Yutaka Tsuzuki; Yuusuke Uchida; Hirofumi Watanabe; Shin Watanabe; Hiroki Yoneda

  Physical Review Letters, 15 Mar. 2023

  
• Reconstruction of multiple Compton scattering events in MeV gamma-ray Compton telescopes towards GRAMS: The physics-based probabilistic model

  Hiroki Yoneda; Hirokazu Odaka; Yuto Ichinohe; Satoshi Takashima; Tsuguo Aramaki; Kazutaka Aoyama; Jonathan Asaadi; Lorenzo Fabris; Yoshiyuki Inoue; Georgia Karagiorgi; Dmitry Khangulyan; Masato Kimura; Jonathan Leyva; Reshmi Mukherjee; Taichi Nakasone; Kerstin Perez; Mayu Sakurai; William Seligman; Masashi Tanaka; Naomi Tsuji; Kohei Yorita; Jiancheng Zeng

  Astroparticle Physics, Jan. 2023

  
• The Compton Spectrometer and Imager

  John A. Tomsick; Steven E. Boggs; Andreas Zoglauer; Dieter Hartmann; Marco Ajello; Eric Burns; Chris Fryer; Chris Karwin; Carolyn Kierans; Alexander Lowell; Julien Malzac; Jarred Roberts; Pascal Saint-Hilaire; Albert Shih; Thomas Siegert; Clio Sleator; Tadayuki Takahashi; Fabrizio Tavecchio; Eric Wulf; Jacqueline Beechert; Hannah Gulick; Alyson Joens; Hadar Lazar; Eliza Neights; Juan Carlos Martinez Oliveros; Shigeki Matsumoto; Tom Melia; Hiroki Yoneda; Mark Amman; Dhruv Bal; Peter von Ballmoos; Hugh Bates; Markus Böttcher; Andrea Bulgarelli; Elisabetta Cavazzuti; Hsiang-Kuang Chang; Claire Chen; Che-Yen Chu; Alex Ciabattoni; Luigi Costamante; Lente Dreyer; Valentina Fioretti; Francesco Fenu; Savitri Gallego; Giancarlo Ghirlanda; Eric Grove; Chien-You Huang; Pierre Jean; Nikita Khatiya; Jürgen Knödlseder; Martin Krause

  arXiv, 2023

  
• MeV Gamma-Ray Source Contribution to the Inner Galactic Diffuse Emission

  Naomi Tsuji; Yoshiyuki Inoue; Hiroki Yoneda; Reshmi Mukherjee; Hirokazu Odaka

  The Astrophysical Journal, 01 Jan. 2023

  
• Event reconstruction of Compton telescopes using a multi-task neural network

  Satoshi Takashima; Hirokazu Odaka; Hiroki Yoneda; Yuto Ichinohe; Aya Bamba; Tsuguo Aramaki; Yoshiyuki Inoue

  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Sep. 2022

  
• Tomographic Imaging by a Si/CdTe Compton Camera for ¹¹¹In and ¹³¹I Radionuclides

  Goro Yabu; Hiroki Yoneda; Tadashi Orita; Shin'ichiro Takeda; Pietro Caradonna; Tadayuki Takahashi; Shin Watanabe; Fumiki Moriyama

  IEEE Transactions on Radiation and Plasma Medical Sciences, May 2022

  
• Polarization measurement of L -shell radiative recombination x rays from highly charged bismuth ion

  Naoki Numadate; Shimpei Oishi; Hirokazu Odaka; priti; Makoto Sakurai; Tadayuki Takahashi; Yutaka Tsuzuki; Yuusuke Uchida; Hirofumi Watanabe; Shin Watanabe; Hiroki Yoneda; Nobuyuki Nakamura

  Physical Review A, 17 Feb. 2022

  
• Discovery of 40.5 ks Hard X-Ray Pulse-phase Modulations from SGR 1900+14

  K. Makishima; T. Tamba; Y. Aizawa; H. Odaka; H. Yoneda; T. Enoto; H. Suzuki

  The Astrophysical Journal, 01 Dec. 2021

  
• Broadband High-energy Emission of the Gamma-Ray Binary System LS 5039: Spectral and Temporal Features Using NuSTAR and Fermi Observations

  Hiroki Yoneda; Dmitry Khangulyan; Teruaki Enoto; Kazuo Makishima; Kairi Mine; Tsunefumi Mizuno; Tadayuki Takahashi

  The Astrophysical Journal, 01 Aug. 2021

  
• Double-Photon Emission Imaging With High-Resolution Si/CdTe Compton Cameras

  Tadashi Orita; Goro Yabu; Hiroki Yoneda; Shin'Ichiro Takeda; Pietro Caradonna; Tadayuki Takahashi; Shin Watanabe; Yuusuke Uchida; Fumiki Moriyama; Hirotaka Sugawara; Mizuki Uenomachi; Kenji Shimazoe

  IEEE Transactions on Nuclear Science, Aug. 2021

  
• Cross-match between the Latest Swift-BAT and Fermi-LAT Catalogs

  Naomi Tsuji; Hiroki Yoneda; Yoshiyuki Inoue; Tsuguo Aramaki; Georgia Karagiorgi; Reshmi Mukherjee; Hirokazu Odaka

  The Astrophysical Journal, 01 Jul. 2021

  
• An application of a Si/CdTe Compton camera for the polarization measurement of hard x rays from highly charged heavy ions

  Yutaka Tsuzuki; Shin Watanabe; Shimpei Oishi; Nobuyuki Nakamura; Naoki Numadate; Hirokazu Odaka; Yuusuke Uchida; Hiroki Yoneda; Tadayuki Takahashi

  Review of Scientific Instruments, 01 Jun. 2021

  
• Sign of Hard-X-Ray Pulsation from the γ -Ray Binary System LS 5039

  H. Yoneda; K. Makishima; T. Enoto; D. Khangulyan; T. Matsumoto; T. Takahashi

  Physical Review Letters, 08 Sep. 2020

  
• Double photon emission coincidence imaging with GAGG-SiPM Compton camera

  Mizuki Uenomachi; Yuki Mizumachi; Yuri Yoshihara; Hiroyuki Takahashi; Kenji Shimazoe; Goro Yabu; Hiroki Yoneda; Shin Watanabe; Shin’ichiro Takeda; Tadashi Orita; Tadayuki Takahashi; Fumiki Moriyama; Hirotaka Sugawara

  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018

  
• Development of Si-CMOS hybrid detectors towards electron tracking based Compton imaging in semiconductor detectors

  Hiroki Yoneda; Shinya Saito; Shin Watanabe; Hirokazu Ikeda; Tadayuki Takahashi

  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017

  
• Search for gravitational redshifted absorption lines in LMXB Serpens X-1

  Hiroki Yoneda; Chris Done; Frits Paerels; Tadayuki Takahashi; Shin Watanabe

  Monthly Notices of the Royal Astronomical Society, 2017

  
• Development and verification of signal processing system of avalanche photo diode for the active shields onboard ASTRO-H

  M. Ohno; T. Kawano; I. Edahiro; H. Shirakawa; N. Ohashi; C. Okada; S. Habata; J. Katsuta; Y. Tanaka; H. Takahashi; T. Mizuno; Y. Fukazawa; H. Murakami; S. Kobayashi; K. Miyake; K. Ono; Y. Kato; Y. Furuta; Y. Murota; K. Okuda; Y. Wada; K. Nakazawa; T. Mimura; J. Kataoka; Y. Ichinohe; Y. Uchida; M. Katsuragawa; H. Yoneda; G. Sato; R. Sato; M. Kawaharada; A. Harayama; H. Odaka; K. Hayashi; M. Ohta; S. Watanabe; M. Kokubun; T. Takahashi; S. Takeda; M. Kinoshita; K. Yamaoka; H. Tajima; Y. Yatsu; H. Uchiyama; S. Saito; T. Yuasa; K. Makishima

  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Sep. 2016

  
• Sensitivity of the Fe Kα Compton shoulder to the geometry and variability of the X-ray illumination of cosmic objects

  Hirokazu Odaka; Hiroki Yoneda; Tadayuki Takahashi; Andrew Fabian

  Monthly Notices of the Royal Astronomical Society, Jul. 2016

  

Awards

• 03 Mar. 2020

  高宇連博士論文賞（高エネルギー宇宙物理連絡会）
• 07 Jul. 2017

  Pierre Besson Prize (Best Presentation Awards)（第8回NDPI国際会議）
• 22 Mar. 2017

  東京大学理学系研究科研究奨励賞（修士論文）

External funds: Kakenhi

• The mechanism of high-energy particle production in gamma-ray binary systems with next-generation MeV gamma-ray telescope

  Grant-in-Aid for Early-Career Scientists

  Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics

  Kyoto University;Institute of Physical and Chemical Research

  米田 浩基

  From 21 Jan. 2025, To 31 Mar. 2030, Granted

  ガンマ線天文学;宇宙線加速;ガンマ線連星;X線連星;MeVガンマ線

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K13136/
• Development of the liquid argon Compton telescope toward future high-sensitive MeV gamma-ray observations

  Grant-in-Aid for Research Activity Start-up

  0203:Particle-, nuclear-, astro-physics, and related fields

  Institute of Physical and Chemical Research

  Hiroki Yoneda

  From 11 Sep. 2020, To 31 Mar. 2022, Project Closed

  MeVガンマ線天文学;コンプトン望遠鏡;液体アルゴン検出器;深層学習;コンプトンカメラ;MeVガンマ線宇宙物理学

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K22355/
• 次世代半導体コンプトンカメラで革新するMeVガンマ線宇宙・素粒子・原子物理学

  Grant-in-Aid for Scientific Research (A)

  Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields

  The University of Tokyo

  高橋 忠幸

  From 01 Apr. 2020, To 31 Mar. 2024, Granted

  ガンマ線天文学;コンプトンカメラ;ダークマター;多価イオン;ガンマ線偏光;多価重イオン

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H00153/