PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
Effect of Dust Extinction on Gamma-ray Burst Afterglows
Gu-Jing Lv ; Lang Shao ; Zhi-Ping Jin ; Da-Ming Wei
2011
Source PublicationChinese Astronomy and Astrophysics
ISSN0275-1062
Volume35Pages:372-381
AbstractIn order to study the effect of dust extinction on the afterglow of gamma-ray bursts (GRBs), we carry out numerical calculations with high precision based on rigorous Mie theory and latest optical properties of interstellar dust grains, and analyze the different extinction curves produced by dust grains with different physical parameters. Our results indicate that the absolute extinction quantity is substantially determined by the medium density and metallicity. However, the shape of the extinction curve is mainly determined by the size distribution of the dust grains. If the dust grains aggregate to form larger ones, they will cause a flatter or grayer extinction curve with lower extinction quantity. On the contrary, if the dust grains are disassociated to smaller ones due to some uncertain processes, they will cause a steeper extinction curve with larger amount of extinction. These results might provide an important insight into understanding the origin of the optically dark GRBs.
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8096
Collection宇宙伽马暴、中子星及相关物理研究团组
Recommended Citation
GB/T 7714
Gu-Jing Lv,Lang Shao,Zhi-Ping Jin,et al. Effect of Dust Extinction on Gamma-ray Burst Afterglows[J]. Chinese Astronomy and Astrophysics,2011,35:372-381.
APA Gu-Jing Lv,Lang Shao,Zhi-Ping Jin,&Da-Ming Wei.(2011).Effect of Dust Extinction on Gamma-ray Burst Afterglows.Chinese Astronomy and Astrophysics,35,372-381.
MLA Gu-Jing Lv,et al."Effect of Dust Extinction on Gamma-ray Burst Afterglows".Chinese Astronomy and Astrophysics 35(2011):372-381.
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