SIMBAD references

2008ApJ...681.1408D - Astrophys. J., 681, 1408-1418 (2008/July-2)

The rapid decline of the prompt emission in gamma-ray bursts.


Abstract (from CDS):

Many gamma-ray bursts (GRBs) have been observed with the Burst Alert Telescope and X-Ray Telescope of the Swift satellite. The successive ``pulses'' of these GRBs end with a fast decline and a fast spectral softening, until they are overtaken by another pulse or the last pulse's decline is overtaken by a less rapidly varying ``afterglow.'' The fast-decline phase has been attributed, in the currently explored standard fireball model of GRBs, to ``high-latitude'' synchrotron emission from a collision of two conical shells. This high-latitude emission does not explain the observed spectral softening. In contrast, the temporal behavior and the spectral evolution during the fast-decline phase agree with the predictions of the cannonball model for GRBs.

Abstract Copyright:

Journal keyword(s): Gamma Rays: Bursts - Radiation Mechanisms: Nonthermal - X-Rays: General

Simbad objects: 17

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