GRB 200829A: External Shock Origin of the Very Early Prompt Emission?

Jing Li, Da-Bin Lin, Rui-Jing Lu +6

Long-duration GRB~200829A was detected by Fermi-GBM and Swift-BAT/XRT, and then rapidly observed by other ground-based telescopes. It has a weak $\gamma$-ray emission in the very early…