GRB071112C: A case study of different mechanisms in X-ray and optical temporal evolution

K. Y. Huang, Y. Urata, Y. H. Tung, H. M. Lin, L. P. Xin, M. Yoshida, W. Zheng, C. Akerlof, S. Y. Wang, W. H. Ip, M. J. Lehner, F. B. Bianco, N. Kawai, D. Kuroda, S. L. Marshall, M. E. Schwamb, Y. Qiu, J. H. Wang, C. Y. Wen, J. WeiK. Yanagisawa, Z. W. Zhang

研究成果: 雜誌貢獻期刊論文同行評審

10 引文 斯高帕斯(Scopus)


We present a study on GRB071112C 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 (Γ0 = 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.

期刊Astrophysical Journal
出版狀態已出版 - 20 3月 2012


深入研究「GRB071112C: A case study of different mechanisms in X-ray and optical temporal evolution」主題。共同形成了獨特的指紋。