6 papers
Gamma-Ray Emission from the Crab Pulsar: A 17-Year Fermi-LAT Reanalysis
Liancheng Zhou, Yun-Lu Gong, Jun Fang +1
We present a reanalysis of 17 years of Fermi Large Area Telescope (LAT) observations of the Crab pulsar obtained between 2008 August and 2025 August. Using monthly Jodrell Bank rad…
A Giant Peanut-shaped Ultra-High-Energy Gamma-Ray Emitter Off the Galactic Plane
Zhen Cao, Felix Aharonian, Yunxiang Bai +312
Ultra-high-energy (UHE), exceeding 100 TeV (10^12 electronvolts), γ-rays manifests extreme particle acceleration in astrophysical sources. Recent observations by γ-ray telescopes…
Kinetic Simulations of Particle Acceleration in Relativistic Perpendicular Electron-positron Shocks with Proton Admixture
Huan Yu, Qi Xia, Jun Fang
Particle acceleration in relativistic shocks of electron-positron plasmas with proton admixture is investigated through two-dimensional (2D) particle-in-cell (PIC) simulations. The…
Particle Acceleration along Magnetic Fields as the Origin of Ear-like Structures in Supernova Remnants
Huan Yu, Jun Fang
The origin of ear-like structures with two opposite lobes extending from the shell of supernova remnants (SNRs) remains a subject of active debate, with proposed mechanisms ranging…
Detection of the Extended -ray Emission around TeV source 1LHAASO J0249+6022 with Fermi-LAT
Gong Yunlu, Zhou Liancheng, Xia Qi +3
1LHAASO J0249+6022 is an extended very-high-energy gamma-ray source discovered by the Large High-Altitude Air Shower Observatory. Based on nearly 16.1 years of data from the Fermi…
Multiband Nonthermal Radiative Properties of the Pulsar Wind Nebula CTB 87
Gong Yunlu, Zhou Liancheng, Xia Qi +3
The pulsar wind nebula CTB 87 (G74.9+1.2) is one of the sources emitting -rays with energies higher than 10 TeV, as measured by the Very Energetic Radiation Imaging Telescope A…