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Spectral and multi-wavelength behavior of the secondary emission component is unconstrained

Characterize potential changes in the spectral energy distribution and quantify the X-ray and radio contributions of GRB220831A’s secondary emission component, which remain unconstrained due to limited sampling.

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Background

To model a possible flare, the authors adopt a phenomenological SBPL plus forward shock, assuming a fixed spectral index for the flare due to limited data. They note an inability to assess spectral changes or impacts outside the OIR.

Sparse X-ray and radio coverage during the suspected excess prevents determining whether the secondary component contributes significantly across bands or exhibits spectral evolution.

References

The data available is insufficient to constrain a change in the spectral energy distribution. We also cannot constrain the secondary emission component’s effects on the X-ray and radio observations due to the lack of sampling.

GRB$\,$220831A: a hostless, intermediate Gamma-ray burst with an unusual optical afterglow (2411.14749 - Freeburn et al., 22 Nov 2024) in Section 3.4.3 (Flare)