Figure 4
From: The GRB221009A gamma-ray burst as revealed by the gamma-ray spectrometer onboard the KPLO (Danuri)
Comparison of gamma-ray spectrum measured during the gamma-ray burst and background. The mean count rate(cps) for “normal”, “1st gamma-ray arrival”, and “2nd gamma-ray arrival” are 1030.0, 17,770.2, and 5008.8 for the measurement time (s) of 1800, 80, and 30, respectively. The uncertainties (%) of these are calculated as 0.23, 0.27, and 0.82, respectively.
