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 _ { \gamma } } 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 } \times 10 ^ { 52 } erg with z = 0.947 .
The optical afterglow light curve is well fitted by a simple power law with temporal index \alpha = -0.60 \pm 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 _ { \gamma } } and { E _ { iso } - E ^ { src } _ { peak } - t ^ { src } _ { jet } } at more than the 3 \sigma level .