REVISITING THE EMISSION FROM RELATIVISTIC BLAST WAVES IN A DENSITY-JUMP MEDIUM
文献类型：期刊论文
| 作者 | Geng, J. J.1,2; Wu, X. F.3,4,5; Li, Liang6; Huang, Y. F.1,2; Dai, Z. G.1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2014-09-01 |
| 卷号 | 792期号:1页码:0 |
| ISSN号 | 0004-637X |
| 关键词 | gamma-ray burst: general hydrodynamics radiation mechanisms: non-thermal shock waves |
| 英文摘要 | Re-brightening bumps are frequently observed in gamma-ray burst afterglows. Many scenarios have been proposed to interpret the origin of these bumps, of which a blast wave encountering a density-jump in the circumburst environment has been questioned by recent works. We develop a set of differential equations to calculate the relativistic outflow encountering the density-jump by extending the work of Huang et al. This approach is a semi-analytic method and is very convenient. Our results show that late high-amplitude bumps cannot be produced under common conditions, rather only a short plateau may emerge even when the encounter occurs at an early time (< 10(4) s). In general, our results disfavor the density-jump origin for those observed bumps, which is consistent with the conclusion drawn from full hydrodynamics studies. The bumps thus should be caused by other scenarios. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GAMMA-RAY BURST ; ENERGY INJECTION MODEL ; X-RAY ; LIGHT CURVES ; AFTERGLOW EMISSION ; 2-COMPONENT JET ; TEMPORAL STRUCTURE ; OPTICAL FLASHES ; DYNAMICAL MODEL ; GRB AFTERGLOWS |
| 收录类别 | SCI |
| 原文出处 | 10.1088/0004-637X/792/1/31 |
| 语种 | 英语 |
| WOS记录号 | WOS:000341172100031 |
| 公开日期 | 2014-11-20 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10604]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 作者单位 | 1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210008, Jiangsu, Peoples R China 3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 4.Chinese Acad Sci, Chinese Ctr Antarctic Astron, Nanjing 210008, Jiangsu, Peoples R China 5.Nanjing Univ, Chinese Acad Sci, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210008, Jiangsu, Peoples R China 6.Univ Stockholm, Dept Phys, SE-10691 Stockholm, Sweden |
| 推荐引用方式 GB/T 7714 | Geng, J. J.,Wu, X. F.,Li, Liang,et al. REVISITING THE EMISSION FROM RELATIVISTIC BLAST WAVES IN A DENSITY-JUMP MEDIUM[J]. ASTROPHYSICAL JOURNAL,2014,792(1):0. |
| APA | Geng, J. J.,Wu, X. F.,Li, Liang,Huang, Y. F.,&Dai, Z. G..(2014).REVISITING THE EMISSION FROM RELATIVISTIC BLAST WAVES IN A DENSITY-JUMP MEDIUM.ASTROPHYSICAL JOURNAL,792(1),0. |
| MLA | Geng, J. J.,et al."REVISITING THE EMISSION FROM RELATIVISTIC BLAST WAVES IN A DENSITY-JUMP MEDIUM".ASTROPHYSICAL JOURNAL 792.1(2014):0. |
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来源：紫金山天文台
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