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https://ir.lib.ncu.edu.tw/handle/987654321/100743
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| 題名: | GRB071112C: A case study of different mechanisms in X-ray and optical temporal evolution |
| 作者: | 浦田裕次;Huang, K. Y.;Urata, Y.;Tung, Y. H.;Lin, H. M.;Xin, L. P.;Yoshida, M.;Zheng, W.;Akerlof, C.;Wang, S. Y.;Ip, W. H.;Lehner, M. J.;Bianco, F. B.;Kawai, N.;Kuroda, D.;Marshall, S. L.;Schwamb, M. E.;Qiu, Y.;Wang, J. H.;Wen, C. Y.;Wei, J.;Yanagisawa, K.;Zhang, Z. W. |
| 貢獻者: | 理學院天文研究所 |
| 關鍵詞: | Afterglows;Astronomy;ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;COLOR;COMPTON EFFECT;COSMIC GAMMA BURSTS;Decay;Earth, ocean, space;Emission analysis;Evolution;Exact sciences and technology;Flux;Mathematical models;STAR EVOLUTION;Temporal logic;VISIBLE RADIATION;X RADIATION;X-rays |
| 日期: | 2012-03-20 |
| 上傳時間: | 2026-04-21 14:12:45 (UTC+8) |
| 出版者: | IOP Publishing Ltd.;Bristol: IOP |
| 摘要: | 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] sub(0) = 275 + or - 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.
出版者： Bristol: IOP
出版日期： 2012-03-20
出處： The Astrophysical journal, 2012-03, Vol.748 (1), p.44-7
資源來源： Institute of Physics (IOP) Journals
版權： 2015 INIST-CNRS
識別號： ISSN: 0004-637X
識別號： ISSN: 1538-4357
識別號： EISSN: 1538-4357
識別號： DOI: 10.1088/0004-637X/748/1/44
識別號： CODEN: ASJOAB |
| 顯示於類別: | [天文研究所] 期刊論文
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