Last updated using ObsID 00518626000, version 11;
The BAT spectrum was fitted with a cut-off power-law. The cutoff energy was 62.7 keV and was not allowed to evolve. See caveats for details.
All data uses absorption NH=0.052 × 1022 cm-2 at z=0 and 0.43 × 1022 cm-2 at z=1.798.
(Source: the late-time spectrum from the XRT spectrum repository).