Swift GRB GRB071010B: Outlier of the E src peak - E γ and E iso - E src peak - t src jet Correlations
Yamaoka, Kazutaka; Ohno, Masanori; Sugita, Satoshi; Urata, Yuji; Im, Myungshin; Tashiro, Makoto; Huang, Kuiyun; Lee, Induk; Deng, Jinsong; Huen Ip, Wing; Krimm, Hans; Liping, Xin; Qiu, Yulei; Wei, Jianyan; Zheng, Weikang
Taiwan, Japan, South Korea, China, United States
Abstract
We present multi-band results for GRB071010B based on Swift, Suzaku, and ground-based optical observations. This burst is an ideal target to evaluate the robustness of the E src peak - E iso and E src peak - E γ relations, whose studies have been in stagnation due to the lack of the combined estimation of E src peak and long-term optical monitoring. The joint prompt spectral fitting using Swift/Burst Alert Telescope and Suzaku/Wide-band All-sky Monitor data yielded the spectral peak energy as E src peak of 86.5+6.4 -6.3 keV and E iso of 2.25+0.19 -0.16 × 1052 erg with z = 0.947. The optical afterglow light curve is well fitted by a simple power law with temporal index α = -0.60 ± 0.02. The lower limit of temporal break in the optical light curve is 9.8 days. Our multi-wavelength analysis reveals that GRB071010B follows E src peak - E iso but violates the E src peak - E γ and E iso - E src peak - t src jet at more than the 3σ level.