Redshift Dependence of the Low-energy Spectral Index of Gamma-Ray Bursts Revisited
文献类型：期刊论文
| 作者 | Zhang, Xiao-Li1; Huang, Yong-Feng2,3,4; Zou, Ze-Cheng4 |
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 23期号:12页码:125003 |
| 关键词 | (stars:) gamma-ray burst: general methods: statistical catalogs |
| ISSN号 | 1674-4527 |
| DOI | 10.1088/1674-4527/acf18d |
| 产权排序 | 4 |
| 英文摘要 | A negative correlation was found to exist between the low-energy spectral index and the redshift of gamma-ray bursts (GRBs) by Amati et al. It was later confirmed by Geng & Huang and Gruber et al., but the correlation was also found to be quite dispersive when the sample size was significantly expanded. In this study, we have established two even larger samples of GRBs to further examine the correlation. One of our samples consists of 316 GRBs detected by the Swift satellite, and the other one consists of 80 GRBs detected by the Fermi satellite. It is found that there is no correlation between the two parameters for the Swift sample, but there does exist a weak negative correlation for the Fermi sample. The correlation becomes even more significant when the spectral index at the peak flux is considered. It is argued that the absence of the correlation in the Swift sample may be due to the fact that Swift has a very narrow energy response so that it could not measure the low-energy spectral index accurately enough. Further studies based on even larger GRB samples are solicited. |
| WOS关键词 | PEAK ENERGY ; LUMINOSITY ; EVOLUTION ; I. |
| 资助项目 | This study was supported by the National Natural Science Foundation of China (grant Nos. 12233002, 12041306, 12147103, and U1938201), by the National SKA Program of China (No. 2020SKA0120300), by the National Key Ramp ; D Program of China (2021YFA0718500),[12233002] ; This study was supported by the National Natural Science Foundation of China (grant Nos. 12233002, 12041306, 12147103, and U1938201), by the National SKA Program of China (No. 2020SKA0120300), by the National Key Ramp ; D Program of China (2021YFA0718500),[12041306] ; This study was supported by the National Natural Science Foundation of China (grant Nos. 12233002, 12041306, 12147103, and U1938201), by the National SKA Program of China (No. 2020SKA0120300), by the National Key Ramp ; D Program of China (2021YFA0718500),[12147103] ; This study was supported by the National Natural Science Foundation of China (grant Nos. 12233002, 12041306, 12147103, and U1938201), by the National SKA Program of China (No. 2020SKA0120300), by the National Key Ramp ; D Program of China (2021YFA0718500),[U1938201] ; National Natural Science Foundation of China[2020SKA0120300] ; National SKA Program of China[2021YFA0718500] ; National Key Ramp ; D Program of China[201909118] ; Youth Innovations and Talents Project of Shandong Provincial Colleges and Universities |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001094261300001 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| 资助机构 | This study was supported by the National Natural Science Foundation of China (grant Nos. 12233002, 12041306, 12147103, and U1938201), by the National SKA Program of China (No. 2020SKA0120300), by the National Key Ramp ; D Program of China (2021YFA0718500), ; National Natural Science Foundation of China ; National SKA Program of China ; National Key Ramp ; D Program of China ; Youth Innovations and Talents Project of Shandong Provincial Colleges and Universities |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/5583]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Huang, Yong-Feng |
| 作者单位 | 1.Nanjing Univ, Dept Phys, Nanjing 210023, Peoples R China 2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xiao-Li,Huang, Yong-Feng,Zou, Ze-Cheng. Redshift Dependence of the Low-energy Spectral Index of Gamma-Ray Bursts Revisited[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(12):125003. |
| APA | Zhang, Xiao-Li,Huang, Yong-Feng,&Zou, Ze-Cheng.(2023).Redshift Dependence of the Low-energy Spectral Index of Gamma-Ray Bursts Revisited.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(12),125003. |
| MLA | Zhang, Xiao-Li,et al."Redshift Dependence of the Low-energy Spectral Index of Gamma-Ray Bursts Revisited".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.12(2023):125003. |
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