Spectral evolution of the GRB 030329 afterglow: Detection of the supernova nebular phase emissions
文献类型：期刊论文
| 作者 | Kosugi, G; Mizumoto, Y; Kawai, N; Yoshida, A; Kawabata, KS; Totani, T; Iye, M; Sekiguchi, K; Aoki, K; Ohyama, Y |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
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| 出版日期 | 2004 |
| 卷号 | 56期号:1页码:61-68 |
| 关键词 | cosmology : early universe gamma rays : bursts gamma rays : individual (GRB 030329) gamma rays : observations stars : supernovae : individual (SN 2003dh) |
| 英文摘要 | GRB 030329 is the first Gamma-ray burst event for which a connection with a supernova (SN 2003dh) has been confirmed spectroscopically in its early phase. We present optical spectroscopy of this object 40 and 85 days after the burst (35 and 73 rest-frame days, respectively) obtained with the Subaru 8.2-m telescope. After subtracting the host galaxy template spectrum, the second-epoch spectrum shows nebular-phase emission lines emerging from the dominated photospheric-phase spectrum. The transition from the photospheric phase to the nebular phase has just started, or was slowly progressing at the time of our second-epoch observations. Our spectral analysis of the nebular-phase emission lines suggests that the explosion of the progenitor of the GRB 030329 was aspherical, and that the axis of an asphericity is well aligned to both the GRB relativistic jet and our line of sight. Although the decay index and the color evolution in the rest frame during our two epochs are very consistent with those of the Type Ic supernovae SN 1998bw and SN 1997ef, the nebular-phase lines emerged slightly earlier than in the case of these supernovae. These results infer that the most important factor that distinguishes SNe with GRB from SNe without GRB is the scale of the jet activity, or a viewing-angle effect, or both of them. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000220139700006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6933]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA 2.Natl Astron Observ, Mitaka, Tokyo 1818588, Japan 3.Tokyo Inst Technol, Dept Phys, Tokyo 1520033, Japan 4.RIKEN, Cosm Radiat Lab, Wako, Saitama 3510198, Japan 5.Aoyama Gakuin Univ, Dept Phys, Sagamihara, Kanagawa 2298558, Japan 6.Univ Tokyo, Inst Astron, Mitaka, Tokyo 1818588, Japan 7.Kyoto Univ, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan 8.Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan 9.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kosugi, G,Mizumoto, Y,Kawai, N,et al. Spectral evolution of the GRB 030329 afterglow: Detection of the supernova nebular phase emissions[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2004,56(1):61-68. |
| APA | Kosugi, G.,Mizumoto, Y.,Kawai, N.,Yoshida, A.,Kawabata, KS.,...&Qiu, YL.(2004).Spectral evolution of the GRB 030329 afterglow: Detection of the supernova nebular phase emissions.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,56(1),61-68. |
| MLA | Kosugi, G,et al."Spectral evolution of the GRB 030329 afterglow: Detection of the supernova nebular phase emissions".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 56.1(2004):61-68. |
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来源：国家天文台
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