Shallow Decay Phase of the Early X-Ray Afterglow from External Shock in a Wind Environment
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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. -
References
[1] Nousek J A et al 2006 Astrophys. J. 642 389 [2] O'Brien P T et al 2006 Astrophys. J. 647 1213 [3] Zhang B et al 2006 Astrophys. J. 642 354 [4] Toma K, Ioka K, Yamazaki R and Nakamura T 2006 Astrophys. J. 640 L139 [5] Ioka K, Toma K, Yamazaki T and Nakamura T 2006 Astron. & Astrophys. 458 7 [6] Wu X F et al 2006 36th COSPAR Sci. Ass. #731(arXiv:astro-ph/0512555) [7] Zou Y C and Dai Z G 2006 Chin. J. Astron. Astrophys. 6 551 [8] Zou Y C, Dai Z G and Xu D 2006 Astrophys. J. 646 1098 [9] Xu M and Huang Y F 2010 Astron. Astrophys. 523 5 [10] Fan Y Z and Piran T 2006 Mon. Not. R. Astron. Soc. 369 197 [11] Kong S W, Wong A Y L, Huang Y F and Cheng K S 2010 Mon. Not. R. Astron. Soc. 402 409 [12] Ghisellini G, Ghirlanda G, Nava L and Firmani C 2007 Astrophys. J. 658 L75 [13] Yamazaki R 2009 Astrophys. J. 690 L118 [14] Liang E W, Lv H J, Hou S J, Zhang B B and Zhang B 2009 Astrophys. J. 707 328 [15] Dai Z G and Lu T 1998 Mon. Not. R. Astron. Soc. 298 87 [16] Chevalier R A and Li Z Y 2000 Astrophys. J. 536 195 [17] Fan Y Z and Wei D M 2005 Mon. Not. R. Astron. Soc. 364 L42 [18] Xue R R, Fan Y Z and Wei D M 2009 Astron. & Astrophys. 498 671 [19] Shen R F and Matzner C D 2011 arXiv:1109.3453v2 [astro-ph] [20] Zhang B, Koabyashi S, and Mészáros P 2003 Astrophys. J. 595 950 [21] Zou Y C, Wu X F and Dai Z G 2005 Mon. Not. R. Astron. Soc. 363 93 [22] Rees M J and Mészáros P 1992 Mon. Not. R. Astron. Soc. 258 41p [23] Sari R, Piran T and Narayan R 1998 Astrophys. J. 497 L17 [24] Cusumano G et al 2006 Astrophys. J. 639 316 [25] Yuan F et al 2010 Astrophys. J. 711 870 [26] Krimm H A et al 2007 Astrophys. J. 665 554 [27] Liang E W, Zhang B B and Zhang B 2007 Mon. Not. R. Astron. Soc. 670 565 [28] Panaitescu A 2006 Mon. Not. R. Astron. Soc. 369 2059 [29] Zhang B 2006 Advances in Space Research 40 1186 [30] Perri M et al 2005 Astron. Astrophys. 442 L1
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