The correlations between hardness ratios and fitting parameters in GRB spectrum
文献类型：期刊论文
| 作者 | Liang EW(梁恩维)1,2,3 ; Xie GZ(谢光中)1,2,4; Rong, XG5
|
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2002 |
| 卷号 | 280期号:4页码:357-368 |
| ISSN号 | 0004-640X |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Liang, EW (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China. |
| 英文摘要 | In this paper, besides general definition of hardness ratio of gamma-ray bursts (GRBs), HR32, we also presented new definitions of hardness ratios, HRhl and HRll, then presented the results of correlation studies, examining the association between the hardness ratios and the spectral fitting parameters (E-0 or E-peak, alpha, beta) by using the GRB data observed by BATSE. The HRhl is defined as the fluence of channel 4 divided by the sum of the fluences of channels 1 to 3, and the HRll is defined as the fluence of channel 3 divided by the sum of the fluences of channel 1 and 2. We found that E-0 and E-peak are correlated with hardness ratios, and beta is only correlated with log (HRhl). The alpha is not correlated with any hardness ratios in the total sample of GRBs, while it correlated with log (HRll) and log (HR32) in the two subsets seperated at log (HRll) = 0.34 x alpha +0.66, respectively. These results show that a harder spectra tends to be steeper and has a higher E-peak or E-0; HRhl describes the spectral behaviors in high energy, while both of HRll and HR32 reflect the spectral characteristics in low energy; the spectral behaviors in low energy are different for the two subsets. We also presented a brief qualitative analysis discussion to the correlations and suggested that the correlations are caused by both of intrinsic and cosmological effects, but intrinsic effects are dominant. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | GAMMA-RAY BURSTS ; BATSE OBSERVATIONS ; PEAK |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1023%2FA%3A1015622324180 |
| 语种 | 英语 |
| WOS记录号 | WOS:000175807100005 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6954]  |
| 专题 | 云南天文台_星系研究组 |
| 作者单位 | 1.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan, 650011, P. R. China 2.National Astronomical Observatories, Chinese Academy of Sciences, P. R. China 3.Physics Department, Guangxi University, Nanning, Guangxi, 530004, P. R. China 4.Yunnan Astrophysics Center, Yunnan University, Kunming, Yunnan 650091, P. R. China 5.Department of Physics, Guangxi Normal University, Guilin, Guangxi, 541004, P. R. China |
| 推荐引用方式 GB/T 7714 | Liang EW,Xie GZ,Rong, XG. The correlations between hardness ratios and fitting parameters in GRB spectrum[J]. ASTROPHYSICS AND SPACE SCIENCE,2002,280(4):357-368. |
| APA | Liang EW,Xie GZ,&Rong, XG.(2002).The correlations between hardness ratios and fitting parameters in GRB spectrum.ASTROPHYSICS AND SPACE SCIENCE,280(4),357-368. |
| MLA | Liang EW,et al."The correlations between hardness ratios and fitting parameters in GRB spectrum".ASTROPHYSICS AND SPACE SCIENCE 280.4(2002):357-368. |
入库方式： OAI收割
来源：云南天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。