Fig. 2.
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Time-integrated PDs of GRBs observed by GAP. Ep, obs refers to the time-integrated observed value of the spectral peak energy. The black squares, red circles, blue stars, and purple diamonds represent the observational values, the predicted values for the aligned-field case, the predicted values for the toroidal-field case, and the estimated values in Guan & Lan (2023), respectively. The polarizations here are calculated in the energy band from 70 keV to 300 keV.
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