About Me 个人简介

I am an Associate Professor at the Institute of High-Energy Physics (IHEP), Chinese Academy of Sciences, and the TIANFU Cosmic Ray Research Center. Previously, I was a Research Assistant Professor at the Yukawa Institute for Theoretical Physics (YITP), Kyoto University, and a Postdoctoral Scholar at Penn State University. My research focuses on multimessenger and high-energy astrophysics, particularly the origin, acceleration, and propagation of the highest-energy particles in the Universe. I am also a core developer of the Astrophysical Multimessenger Emission Simulator (AMES).

我是中国科学院高能物理研究所（IHEP）及天府宇宙线研究中心的副研究员。此前，我曾在日本京都大学基础物理学研究所（YITP）及美国宾夕法尼亚州立大学（Penn State）从事研究工作。我的研究主要集中在多信使天体物理学和高能天体物理学领域，致力于探索宇宙最高能粒子的起源、加速与传播机制。我也是天体物理多信使辐射模拟代码（AMES）的核心开发者。

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Recent Activities 近期活动

  • [2026.05] Conducting a research residency at the Centre for Advanced Study (CAS) in Oslo, Norway. 赴挪威奥斯陆高级研究中心（CAS）进行学术访问与驻研。
  • [2026.05] Our paper "Ultraheavy Ultrahigh-Energy Cosmic Rays" has been formally accepted for publication in Physical Review Letters (PRL). 一作研究论文 "Ultraheavy Ultrahigh-Energy Cosmic Rays" 正式被 Physical Review Letters (PRL) 接受发表。
  • [2026.04] Attended the LHAASO Collaboration meeting in Suzhou, China. 参加LHAASO合作组会议，苏州。
  • [2026.02] Organized and chaired sessions for the Symposium on Ultra-High-Energy Gamma Rays from Supernova Remnants and the Origin of Galactic Cosmic Rays. 组织并主持了“超新星遗迹超高能伽马射线与银河系宇宙线起源”学术研讨会。

Research Interests 科研方向

  • Ultrahigh-Energy Cosmic Rays 超高能宇宙线 (UHECRs)

    Investigating the spectrum and composition of UHECRs, with a special focus on the propagation and survival of ultraheavy nuclei in galactic and intergalactic spaces at extreme energies.

    研究超高能宇宙线的能谱与成分，特别是极端能量下超重核在星系及星系际空间中的传播与生存机制。

  • Galactic PeVatrons & Microquasars & SNRs 银河系 PeVatron 与微类星体、超新星遗迹

    Exploring the origins of Galactic cosmic rays using Very-High-Energy (VHE) gamma-rays, specifically focusing on microquasars and SNRs as Galactic cosmic ray sources.

    利用甚高能（VHE）伽马射线探索银河系宇宙线的起源，特别是微类星体大尺度喷流-茧系统作为 PeVatron 的物理机制。

  • Multimessenger Modeling (AMES) 数值模拟与多信使模型

    Developing and maintaining the Astrophysical Multimessenger Emission Simulator (AMES) for precise numerical simulations of high-energy processes in transient sources like TDEs and GRBs.

    开发与维护天体物理多信使辐射模拟器 (AMES)，针对潮汐撕裂事件(TDEs)、伽马射线暴(GRBs)等瞬变源进行高能物理过程的精确数值模拟。

Selected Publications & Highlights 近期代表作与科研亮点

1. Microquasar jet-cocoon systems as PeVatrons

B. Theodore Zhang, S. S. Kimura, K. Murase.
Phys. Rev. D 112, 123015 (2025) | arXiv:2506.20193
Abstract: We propose that shear acceleration within large-scale microquasar jet-cocoon structures can naturally explain the Galactic cosmic ray spectrum up to the knee (~3 PeV), offering a unified picture for CR origins. 摘要：提出了微类星体大尺度喷流-茧结构中的剪切加速机制，能够自然地解释银河系宇宙线能谱至“膝”区（~3 PeV）的观测结果，为银河系宇宙线起源提供了统一的物理图景。

Microquasar CR Spectrum Fit

2. Ultraheavy Ultrahigh-Energy Cosmic Rays

B. Theodore Zhang, K. Murase, N. Ekanger, M. Bhattacharya, S. Horiuchi.
Phys. Rev. Lett. 136, 181002 (2026) | arXiv:2405.17409
Abstract: We investigate the propagation of ultraheavy (UH) nuclei at extreme energies (≲ 300 EeV), showing their energy-loss lengths are significantly longer than intermediate-mass elements, making them compelling candidates for events like the Amaterasu particle. 摘要：研究了超重核宇宙线在极端能量（≲ 300 EeV）下的传播，指出其能量损失长度显著长于中等质量核，极有可能是 Amaterasu 粒子等极端高能事件的来源。

Propagation of Ultraheavy UHECRs

3. A Unified Framework for 10 TeV to EeV Diffuse Neutrino Sky and KM3-230213A

S. Yu, B. Theodore Zhang.
Astrophys. J. Lett. 1002, L45 (2026) | arXiv:2602.02372
Abstract: Developed a unified framework to explain the diffuse neutrino sky spanning from 10 TeV to EeV energies, with implications for the KM3-230213A event. 摘要：建立了一个统一的多信使框架，解释了从 10 TeV 至 EeV 能段的弥散中微子辐射，并探讨了其对中微子事件 KM3-230213A 的启示。

Diffuse neutrinos from LLGRBs

4. The origin of very-high-energy gamma-rays from GRB 221009A

B. Theodore Zhang, K. Murase, K. Ioka, B. Zhang.
JHEAp 45, 392-408 (2025) | arXiv:2311.13671
Abstract: Exploring the VHE gamma-ray origins of the hyper-bright GRB 221009A, revealing the crucial role of reverse shock proton synchrotron emission in accelerating protons to extreme energies in the early afterglow phase. 摘要：探讨了极亮伽马暴 GRB 221009A 的甚高能（VHE）伽马射线起源，揭示了反向激波质子同步辐射在早期余辉阶段加速质子至极端能量的重要作用。

GRB 221009A Proton Synchrotron Spectrum

5. Microquasar Remnants as Pevatrons Illuminating the Galactic Cosmic Ray Knee

B. Theodore Zhang, S. Yu.
arXiv:2602.08940 (2026)
Abstract: Investigating microquasar remnants as a dominant class of Galactic PeVatrons, providing a natural explanation for the cosmic-ray spectrum up to the knee region. 摘要：探讨了微类星体遗迹作为银河系主要PeVatron的物理机制，为宇宙线能谱延伸至“膝”区提供了解释。

6. A Minimal Interpretation of the Galactic Cosmic-Ray Proton and Helium Spectra

F. Aharonian, B. Theodore Zhang.
arXiv:2602.08223 (2026)
Abstract: Proposed a minimal and elegant model to interpret the Galactic cosmic-ray proton and helium spectra across a wide energy range from GeV to PeV. 摘要：提出了一种极简理论模型，以解释从GeV到PeV宽能段范围内的银河系宇宙线质子与氦核能谱。

Research Group 研究组信息

We are always looking for highly motivated postdocs, Ph.D. students, and Master's students to join our team. If interested, please drop me an email with your CV.

我们团队常年招收优秀的博士后、博士研究生和硕士研究生。欢迎对高能天体物理和多信使数值模拟感兴趣的同学通过邮件联系我并附上简历。

👥 Postdoctoral Researchers博士后

  • Dr. Tianci Zheng郑天赐 博士
  • Dr. Wei Zhang张玮 博士
  • Opening available — contact via email for application details.暂有空缺 — 欢迎通过邮件咨询申请详情。

🎓 Ph.D. Students博士研究生

  • Position open for upcoming academic year.新学年名额开放招募中。

📖 Master's Students硕士研究生

  • Joint Master's Students: Shilong Chen, Wenkang Lian联合培养硕士生：陈世龙，连文康
  • Collaborating Master's Students: Siyu Chen, Jiayi Wang合作指导硕士生：陈思羽，王家毅
  • Inquiries for institutional rotation and thesis projects are welcome.欢迎所内轮转生及毕业论文推免生联系。