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Paper: Evolution of an Afterglow with a Hard Electron Spectrum
Volume: 312, Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era
Page: 411
Authors: Bhattacharya, D.; Resmi, L.
Abstract: Diffusive shock acceleration theory suggests that the "universal" energy spectrum of electrons with a power-law index p ≈ 2.3, commonly used to model GRB afterglows, cannot extend below an electron lorentz factor γe equal to the bulk lorentz factor of the blast wave multiplied by the ratio of proton and electron masses. We suggest that the electron energy distribution has a slope p < 2 below this limit, down to an appropriate γm. A two-slope spectrum such as this provides a good model for the afterglow of GRB010222.
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