3 papers
astro-ph.HE2026
A Universal 1.5 GeV Gamma-Ray Line in Active Galactic Nuclei
Shi-Ju Kang, Yue Yin, Yong-Gang Zheng +1
We report the detection of a gamma-ray spectral line at approximately 1.5 GeV in three active galactic nuclei (AGN) using 17 years of Fermi-LAT observations. The sample includes bo…
astro-ph.HE2025
A re-identification of six Candidate Gravitationally Lensed Gamma-Ray Bursts
Yu Zhao, Zhao-Yang Peng, Jia-Ming Chen +2
The gravitational lensing effect of gamma-ray bursts (GRBs) holds significant and diverse applications in the field of astronomy. Nevertheless, the identification of millilensing e…
astro-ph.HE2025
A Study of the Spectral Properties of Gamma-Ray Bursts with the Main and Second Bursts
Ze-Lian Du, Zhao-Yang Peng, Jia-Ming Chen +2
The origins of the main burst and second burst of gamma-ray bursts (GRBs) and the composition of their jets remain uncertain. To explore this complex subject more thoroughly, we co…