Swift GRB GRB071010B: Outlier of the E^src_peak - E_γ and E_iso - E^src_peak - t^src_jet correlations

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.