Shallow Decay Phase of the Early X-Ray Afterglow from External Shock in a Wind Environment
Abstract
We investigate the shallow decay phase of an early x-ray afterglow in gamma-ray bursts discovered by Swift, and suggest that both the shallow decay phase and the normal phase are from external shock in a wind environment, while the transferring time is the deceleration time. We apply this model to GRBs 050319 and 081008, and find that they can be explained by choosing a proper set of parameters.
- Publication:
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Chinese Physics Letters
- Pub Date:
- December 2011
- DOI:
- 10.1088/0256-307X/28/12/129801
- arXiv:
- arXiv:1109.5218
- Bibcode:
- 2011ChPhL..28l9801L
- Keywords:
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- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 5 pages. Submitted to Chinese Physics Letters