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Shallow Decay Phase of the Early X-Ray Afterglow from External Shock in a Wind Environment |
| LEI Hai-Dong1, WANG Jiu-Zhou2, LÜ Jing2, ZOU Yuan-Chuan2**
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1Department of Physics and Electronics, Jianghan University, Wuhan 430056
2School of Physics, Huazhong University of Science and Technology, Wuhan 430074
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| Cite this article: |
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LEI Hai-Dong, WANG Jiu-Zhou, LÜ et al 2011 Chin. Phys. Lett. 28 129801 |
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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.
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| Keywords:
98.70.Rz
94.05.Dd
98.58.Fd
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Received: 15 June 2011
Published: 29 November 2011
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