Last updated using ObsID 00337889000, version 12;
The BAT spectrum was fitted with a cut-off power-law. The cutoff energy was 124.9 keV and was not allowed to evolve. See caveats for details.
All data uses absorption NH=0.020 × 1022 cm-2 at z=0 and 5.02 × 1022 cm-2 at z=2.36.
(Source: the late-time spectrum from the XRT spectrum repository).