Dec 11 – 15, 2023
Tsung-Dao Lee Institute
Asia/Shanghai timezone

2. Particle Astrophysics

Mini-Symposium on Particle Astrophysics: High-energy cosmic rays, gamma-rays and neutrinos



More than a hundred years after the discovery of cosmic rays, their origin still remains enigmatic, especially a very high energies. The study of their secondary gamma-rays and neutrinos has allowed to make important progress in our understanding of their acceleration and propagation mechanisms. Recently, the field has witnessed several remarkable breakthroughs including, amongst others, the discovery of TeV pulsar halos by HAWC, the observation of Galactic PeVatrons and of GRB 221009A by LHAASO, as well as the detection of Galactic and extragalactic VHE neutrinos by IceCube. With the advent of multi-messenger astronomy, further substantial progress is now within reach.

This mini-symposium aims at discussing recent developments, both in theory and observations, on key open questions, including the nature of cosmic-ray, gamma-ray, and neutrino sources, cosmic-ray acceleration mechanisms, and their propagation from the sources to the Earth.



The following topics will be covered in this mini-symposium:

  • Galactic and extragalactic cosmic rays (acceleration, propagation)
  • Gamma-ray astronomy (Galactic and extragalactic sources, interpretation and modeling of these sources, prospects for future experiments, etc.)
  • Neutrino astronomy (Galactic and extragalactic sources, diffuse emission, interpretation and modeling, prospects for future experiments at VHE and UHE, etc.)

Confirmed invited speakers:

  • Carlos Argüelles-Delgado (Harvard University): Neutrino astronomy, astrophysical neutrino flavor ratio and BSM physics
  • Niccolò Bucciantini (Arcetri Astrophysical Observatory): Pulsar Wind Nebulae
  • Ke Fang (University of Wisconsin-Madison): Interpretation of HAWC observations, Galactic and extragalactic PeVatrons
  • Glennys Farrar (New York University): Ultra high energy cosmic rays
  • Jim Hinton (Max Planck Institute for Nuclear Physics): VHE-UHE Gamma-rays from Relativistic Galactic Sources
  • Shigeo Kimura (Tohoku University): Galactic Black Holes as PeVatrons
  • Ruoyu Liu (Nanjing University): LHAASO results on PeVatrons and Pulsar Wind Nebulae
  • Kohta Murase (Penn State University): Origin of IceCube neutrinos
  • Laura Olivera-Nieto (Max Planck Institute for Nuclear Physics): SS433
  • Yongzhong Qian (University of Minnesota): Presupernova and supernova neutrinos
  • Xiangyu Wang (Nanjing University): LHAASO results on GRB 221009A


Mini-symposium conveners:

Gwenael Giacinti (TDLI, SJTU), Donglian Xu (TDLI, SJTU), Hao Zhou (TDLI, SJTU).



Session 1: Monday afternoon (11 December)

(20'+5') Carlos Argüelles-Delgado (Harvard): Neutrino astronomy, astrophysical neutrino flavor ratio and BSM physics  [Slides]

(20'+5') Kohta Murase (Penn State): Multimessenger View of High-Energy Cosmic Neutrino Sources  [Slides]

(10'+2') Tomohisa Kawashima (ICRR, Tokyo): High-energy neutrino emission from GRMHD accretion flows onto supermassive black holes  [Slides]

(20'+5') Yongzhong Qian (U. Minnesota): Presupernova and Supernova Neutrinos  [Slides]

(10'+2') Weikang Lin (SWIFAR): The féeton (B-L gauge boson) dark matter and its prediction in low-energy neutrino astronomy  [Slides]


Session 2: Tuesday afternoon (12 December)

(20'+5') Jim Hinton (MPIK): VHE-UHE Gamma-rays from Relativistic Galactic Sources  [Slides]

(20'+5') Ruoyu Liu (Nanjing U.): LHAASO results on PeVatrons and Pulsar Wind Nebulae  [Slides]

(20'+5') Niccolò Bucciantini (Arcetri Obs.): Particle Acceleration in Pulsar Wind Nebulae  [Slides]

(10'+2') Shangming Chen (TDLI): Gamma-ray binaries at very-high-energies: particle acceleration and non-thermal emission  [Slides]

(10'+2') Chengyu Shao (SYSU): Multi-messenger Study of Galactic Diffuse Emission with LHAASO and IceCube Observations  [Slides]


Session 3: Wednesday afternoon (13 December)

(20'+5') Ke Fang (Wisconsin-Madison): Toward an understanding of Galactic PeVatrons  [Slides]

(20'+5') Laura Olivera-Nieto (MPIK): Transport of relativistic particles observed in the parsec-scale jets of SS 433

(10'+2') Silvia Celli (Sapienza U.): High-energy non-thermal emission from local young massive stellar clusters

(20'+5') Shigeo Kimura (Tohoku U.): Galactic Black Holes as PeVatrons and sub-PeV gamma-ray sources  [Slides]

(10'+2') Fulai Guo (SHAO): Origin and Cosmic Ray Acceleration in Fermi Bubbles and Other High Energy Phenomena at the Galactic Center  [Slides]


Session 4: Friday morning (15 December)

(20'+5') Xiangyu Wang (Nanjing U.): LHAASO observations of the BOAT GRB 221009A  [Slides]

(10'+2') Gwenael Giacinti (TDLI, SJTU): Extreme particle acceleration at AGN jet termination shocks  [Slides]

(10'+2') Laenita De Jonge (NWU): A parameter study of the hadronic synchrotron mirror model on 3C279  [Slides]

(10'+2') Andrew Chen (Witwatersrand): H.E.S.S. observations of composite Seyfert–starburst galaxies  [Slides]

(20'+5') Glennys Farrar (NYU): Constraining the Sources of UHECRs  [Slides]

(10'+2') Paul Simeon (Stanford): Arguments in Favor of Cluster Accretion Shocks as the Source of Ultra-High-Energy Cosmic Rays


Poster presentations:

  • Yo Kusafuka (ICRR, U. Tokyo): Dynamical energy dissipation of relativistic magnetic jets
  • Hongbin Tan (Nanjing University): A multi-zone view on the multi-wavelength emission of blazars
  • Jianhe Zheng (Nanjing University): Two-component jet model for the TeV and multi-wavelength afterglows of GRB 221009A
  • Xiao-Bin Chen (Nanjing University): Could the TeV emission of starburst galaxies originate from pulsar wind nebulae?
  • Miaochen Jin (Harvard University): Matching Neutrino-Dark Matter Scattering Limits from Boosted Dark Matter and Neutrino Echo using Supernovae Neutrino Flux
  • Samy Kaci (TDLI): Impact of a discrete distribution of cosmic-ray sources on the Galactic gamma-ray emission at VHE
  • Yiwei Bao (TDLI & Nanjing U.): Mirage Sources and Large Offsets: Interconnected Phenomena in Asymmetric Diffusion and projection effects
  • Wenyi Bian (TDLI): Variations of Small-scale Cosmic Ray Anisotropies with Time and Energy
  • Wenyi Bian (TDLI): Angular power spectrum of the TeV cosmic ray anisotropy
  • Yuan Li (TDLI): Is SNR G150.3+4.5 a PeVatron?
  • Gwenael Giacinti (TDLI & SJTU): Cosmic ray flux at the knee, and diffuse gamma-ray emission at Very High Energies
  • Wei Tian (TDLI): A Camera-based Optical Calibration System for Water-based Neutrino Telescopes
  • Wei Tian (TDLI): Searching for astrophysical tau neutrinos with hDOM waveforms in TRIDENT
  • Fuyudi Zhang (TDLI): Shower Reconstruction in TRIDENT
  • Iwan Morton-Blake (TDLI): Extending JUNO’s Astrophysical Reach with a Low-Energy Multi-Messenger Trigger System
  • Wenjuan Zhong (Nanjing University): An Enigmatic PeVatron in an Area around HII Region G35.6−0.5
  • Ziwei Ou (TDLI): Star Formation Activity and Cosmic Rays Acceleration in Starburst Galaxies
  • Ramiro Torres-Escobedo (TDLI): Inverse Compton Template Modeling of Geminga and Monogem with the HAWC Gamma-ray Observatory
  • Tianyang Li (TDLI): Development of a lake array proposal for SWGO
  • Qinyuan Zhang (PKU): Searching for UHECR-associated gamma-ray sources with LHAASO-WCDA
  • He-Wen Yang (SYSU): Constraining the SSC Model of GRB 221009A via Spectral Energy Distribution
  • Hao Zhou (TDLI): Recent Discoveries of TeV Halos
  • Ziwei Ou (TDLI): Unified Scheme of Multiscale Astrophysical Jets