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External Inverse-Compton Emission Associated with Extended and Plateau Emission of Short Gamma-Ray Bursts: Application to GRB 160821B

  • Authors: B. Theodore Zhang, Kohta Murase, Chengchao Yuan, Shigeo S. Kimura, and Peter Mészáros

2021 The Astrophysical Journal Letters 908 L36.

  • Provider: AAS Journals

Caption: Figure 2.

Top panel: multiwavelength light curves from radio, optical, X-ray, and VHE band at 500 GeV in the EIC scenario. The data shown are the same as in Figure 1. We include late-prompt emission consisting of extended and plateau emission fitted with Equations (1) and (2), and VHE γ-rays from the EIC process. Middle panel: same as Figure 1, but we show the broadband spectra for tobs = 103.6–104 s. Bottom panel: Compton Y parameter, YSSC (dashed line) and YEIC (dashed–dotted line), as a function of electron Lorentz factor γe; the blue solid line is the YSSC estimated in the Thomson regime. The physical parameters are ﹩{{ \mathcal E }}_{k}=2\times {10}^{51}\,\mathrm{erg}﹩, Γ0 = 60, nex = 0.1 cm−3, ϵe = 0.5, ϵB = 10−6, fe = 0.1, s = 2.5, and θj = 0.1.

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