| On the Evolution of the Apparent Size of Gamma-Ray Burst Remnants |
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| 引用本文： | Ting-Ting Gao and Yong-Feng Huang Department of Astronomy,Nanjing University,Nanjing 210093,. On the Evolution of the Apparent Size of Gamma-Ray Burst Remnants[J]. 中国天文和天体物理学报, 2006, 6(3): 305-311 |
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| 作者姓名： | Ting-Ting Gao and Yong-Feng Huang Department of Astronomy Nanjing University Nanjing 210093 |
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| 作者单位： | Ting-Ting Gao and Yong-Feng Huang Department of Astronomy，Nanjing University，Nanjing 210093; |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | The remnants of two gamma-ray bursts, GRB 030329 and GRB 041227, have been resolved by Very Long Baseline Interferometry observations. The radio counterparts were observed to expand with time. These observations provide an important way to test the dynamics of the standard fireball model. We show that the observed size evolution of these two events cannot be explained by a simple jet model, rather, it can be satisfactorily explained by the two-component jet model. It strongly hints that gamma-ray burst ejecta may have complicated structures.
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| 关 键 词： | gamma rays: bursts—ISM: jets and outflows |
On the Evolution of the Apparent Size of Gamma-Ray Burst Remnants |
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| Ting-Ting Gao,Yong-Feng Huang. On the Evolution of the Apparent Size of Gamma-Ray Burst Remnants[J]. Chinese Journal of Astronomy and Astrophysics, 2006, 6(3): 305-311 |
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| Authors: | Ting-Ting Gao Yong-Feng Huang |
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| Affiliation: | Department of Astronomy, Nanjing University, Nanjing 210093 |
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| Abstract: | The remnants of two gamma-ray bursts, GRB 030329 and GRB 041227, have been resolved by Very Long Baseline Interferometry observations. The radio counterparts were observed to expand with time. These observations provide an important way to test the dynamics of the standard fireball model. We show that the observed size evolution of these two events cannot be explained by a simple jet model, rather, it can be satisfactorily explained by the two-component jet model. It strongly hints that gamma-ray burst ejecta may have complicated structures. |
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| Keywords: | gamma rays: bursts - ISM: jets and outflows |
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