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The Pulse of Different Angular Regions in the Fireball Framework
Alternative Title火球框架下的不同角区域形成的脉冲
Dong YM(董云明); Zhao XH(赵晓红); Jia LW(贾兰伟)
Source Publication天文研究与技术
Contribution Rank第3完成单位
Indexed ByCSCD
Keyword伽玛暴 理论 辐射机制 非热的 相对论性的
AbstractIn the fireball framework, the pulses of the different unattached angular regions (DUARs) and the different angular regions with the lower and upper opening angle (DARs) are investigated. It is shown that: 1) the rise part and the decay part of the fast rise exponential decay (FRED)pulse of the fireball come from different angular regions, and the rise part mainly comes from the angular regions close to the axis; 2) the FWHM of the pulse of the fireball is mainly determined by a special region with its opening angle being about 6/(10Γ). 3) the FRED pulse comes from the spherical fireball or a jet with its opening angle larger than 6/(10Γ). If the source of gamma-ray burst is not a spherical fireball or a jet with its opening angle not larger than 6/(10Γ), the pulse would be not FRED pulse shape.
Other Abstract在火球模型下,研究了不同的无联系的和有联系的角区域的脉冲性质。发现:(1)FRED脉冲形状的上升和下降阶段来自于火球面的不同角区域,并且上升部分主要来自于靠近视线轴向的角区域部分;(2)整个火球形成的FRED脉冲形状主要是有张角为γ6/10的角区域部分提供;(3)球形火球或者张角大于γ6/10的喷流可以形成FRED脉冲形状。如果伽玛暴源不是球形火球或者也不是张角大于γ6/10的喷流,则形成的观测脉冲不是FRED形状。
Funding Organization四川教育厅基金和四川师范大学基金项目 ; 中国科学院王宽诚博士后工作奖励基金
Subject Area天文学
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Document Type期刊论文
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GB/T 7714
Dong YM,Zhao XH,Jia LW. The Pulse of Different Angular Regions in the Fireball Framework[J]. 天文研究与技术,2007,4(3):205-215.
APA 董云明,赵晓红,&贾兰伟.(2007).The Pulse of Different Angular Regions in the Fireball Framework.天文研究与技术,4(3),205-215.
MLA 董云明,et al."The Pulse of Different Angular Regions in the Fireball Framework".天文研究与技术 4.3(2007):205-215.
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