GRB 071112C: A CASE STUDY OF DIFFERENT MECHANISMS IN X-RAY AND OPTICAL TEMPORAL EVOLUTION
文献类型：期刊论文
| 作者 | Huang, K. Y.1; Urata, Y.2; Tung, Y. H.1,3,4; Lin, H. M.1,2; Xin, L. P.5; Yoshida, M.6,7; Zheng, W.8; Akerlof, C.8; Wang, S. Y.1; Ip, W. H.2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2012-03-20 |
| 卷号 | 748期号:1 |
| 关键词 | gamma-ray burst: individual (GRB 071112C) |
| 英文摘要 | We present a study on GRB 071112C X-ray and optical light curves. In these two wavelength ranges, we have found different temporal properties. The R-band light curve showed an initial rise followed by a single power-law decay, while the X-ray light curve was described by a single power-law decay plus a flare-like feature. Our analysis shows that the observed temporal evolution cannot be described by the external shock model in which the X-ray and optical emission are produced by the same emission mechanism. No significant color changes in multi-band light curves and a reasonable value of the initial Lorentz factor (Gamma(0) = 275 +/- 20) in a uniform interstellar medium support the afterglow onset scenario as the correct interpretation for the early R band rise. The result suggests that the optical flux is dominated by afterglow. Our further investigations show that the X-ray flux could be created by an additional feature related to energy injection and X-ray afterglow. Different theoretical interpretations indicate the additional feature in X-ray can be explained by either late internal dissipation or local inverse-Compton scattering in the external shock. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000301347500044 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6107]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan 2.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan 3.Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan 4.Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan 7.Natl Astron Observ Japan, Okayama Astrophys Observ, Okayama 7190232, Japan 8.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA 9.Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA 10.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA |
| 推荐引用方式 GB/T 7714 | Huang, K. Y.,Urata, Y.,Tung, Y. H.,et al. GRB 071112C: A CASE STUDY OF DIFFERENT MECHANISMS IN X-RAY AND OPTICAL TEMPORAL EVOLUTION[J]. ASTROPHYSICAL JOURNAL,2012,748(1). |
| APA | Huang, K. Y..,Urata, Y..,Tung, Y. H..,Lin, H. M..,Xin, L. P..,...&Zhang, Z. W..(2012).GRB 071112C: A CASE STUDY OF DIFFERENT MECHANISMS IN X-RAY AND OPTICAL TEMPORAL EVOLUTION.ASTROPHYSICAL JOURNAL,748(1). |
| MLA | Huang, K. Y.,et al."GRB 071112C: A CASE STUDY OF DIFFERENT MECHANISMS IN X-RAY AND OPTICAL TEMPORAL EVOLUTION".ASTROPHYSICAL JOURNAL 748.1(2012). |
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来源：国家天文台
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