Anisotropic low-energy electron pitch angles reduce synchrotron polarization degrees in gamma-ray and X-ray bands of GRB prompt emission compared to isotropic cases, with optical band behavior depending on the slope m, offering a possible match to some observations.
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The intensity-tracking pattern in GRB prompt spectra divides into three subclasses: aligned peaks (Type I), Ep before flux (Type II, dominant), and Ep after flux (Type III).
Decaying magnetic fields in fast-cooling synchrotron emission partially harden the low-energy index but still produce a distribution centered near α ≈ −1.5, falling short of reproducing the observed GBM catalog at the population level.
Spectral width increases with time in GRB 220426A and GRB 230812B, challenging single-zone emission models and supporting multi-zone prompt emission.
GRB 110801A shows double-burst gamma-ray emission with an early-rising optical afterglow from the first burst preceding the second prompt episode, modeled via reverse and forward shocks yielding Gamma_0 ~60, theta_j ~0.09, and E_k,iso ~10^54.8 erg.
citing papers explorer
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Synchrotron polarization of anisotropic electron distribution in GRB prompt emission
Anisotropic low-energy electron pitch angles reduce synchrotron polarization degrees in gamma-ray and X-ray bands of GRB prompt emission compared to isotropic cases, with optical band behavior depending on the slope m, offering a possible match to some observations.
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Three Subclasses of the Intensity-tracking Pattern in Gamma-Ray Burst Spectral Evolution
The intensity-tracking pattern in GRB prompt spectra divides into three subclasses: aligned peaks (Type I), Ep before flux (Type II, dominant), and Ep after flux (Type III).
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Fast-Cooling Synchrotron in Decaying Magnetic Fields: Implications for the GRB Spectral Distribution
Decaying magnetic fields in fast-cooling synchrotron emission partially harden the low-energy index but still produce a distribution centered near α ≈ −1.5, falling short of reproducing the observed GBM catalog at the population level.
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Are Single-Zone Emission models Sufficient to Explain GRB 220426A and GRB 230812B?
Spectral width increases with time in GRB 220426A and GRB 230812B, challenging single-zone emission models and supporting multi-zone prompt emission.
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The Double-Burst Nature and Early Afterglow Evolution of Long GRB 110801A
GRB 110801A shows double-burst gamma-ray emission with an early-rising optical afterglow from the first burst preceding the second prompt episode, modeled via reverse and forward shocks yielding Gamma_0 ~60, theta_j ~0.09, and E_k,iso ~10^54.8 erg.