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| Paper: |
The Role of Photon Scattering in Shaping the Lightcurves of Gamma-Ray Bursts |
| Volume: |
312, Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era |
| Page: |
441 |
| Authors: |
Lazzati, D. |
| Abstract: |
Scattering by the baryon associated electrons or by a pair photosphere are sometimes invoked to explain spectral and/or temporal features in GRB lightcurves. Downscattering may be important to reproduce, within the internal shock model, the variability luminosity and the peak-frequency luminosity correlations. I here make use of the variability parameter of GRB lightcurves to produce average power spectra in 6 bins of variability. I find that the power spectra do no show any sign of a cutoff due to the smearing of the high frequencies by scattering. Rather, the different variability is due to a moving break in the power-law spectrum. I conclude that photon scattering is not important in shaping the lightcurves of GRBs. |
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