Observation of GRB 221009A early afterglow in X/$\gamma$-ray energy band

Chao Zheng, Yan-Qiu Zhang, Shao-Lin Xiong +45

The early afterglow of a Gamma-ray burst (GRB) can provide critical information on the jet and progenitor of the GRB. The extreme brightness of GRB 221009A allows us to probe its e…