3 papers
astro-ph.HE2026
Revisiting the Multiwavelength Data of GRB 240825A: Implications for a Two-Stage Central Engine and a Dusty Environment
Ren-Jie Xiong, Zi-Qi Wang, Xiao-Li Huang +1
Reanalyzing the multi-wavelength data of GRB 240825A, we identify two distinct prompt-emission episodes, i.e. an early, spectrally soft plateau and a subsequent bright, spectrally…
astro-ph.HE2026
Do Prompt Gamma-ray Burst Fireball Composition Impact on Afterglow Emission? Cases Study for Long GRBs 080916C/090902B and Short GRBs 090510/130603B
Yu Gan, Ren-Jie Xiong, Zi-Qi Wang +3
Broadband observations with the {\em Fermi} mission reveal that a large fraction of gamma-ray burst (GRB) spectra are dominated by non-thermal emission, while a small fraction are…
astro-ph.HE2024
Cascade Radiations of from -annihilation process as an extra component of the Early Optical/X-Ray Afterglows of Gamma-Ray Bursts
Ren-Jie Xiong, Xiao-Li Huang, Ze-Rui Wang
Chromatic break and/or plateau observed in the early optical and X-ray afterglow lightcurves challenge the conventional external shock models of gamma-ray bursts (GRBs). Detection…