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Swift-XRT spectra of GRB 250917B — Source 3

Last updated at 2025-09-19 at 05:46:34 UTC

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Time-averaged spectrum (T0 + 141 to 144927 s)

Download spectral files for Time-averaged spectrum.

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PC mode spectrum of GRB 250917B

PC mode. Mean photon arrival: T0+68125 s

NH (Galactic)7.24 × 1021 cm-2
NH (intrinsic)0 (+1.68 × 1022, -0) cm-2
z of absorber0
Photon index1.06 (+1.41, -0.69)
Flux (0.3-10 keV)
(Observed)
2.3 (+1.7, -1.2) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.7 (+1.9, -1.2) × 10-13 erg cm-2 s-1
Counts to flux (obs)6.84 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)8.01 × 10-11 erg cm-2 ct-1
W-stat
What's this?(dof)
18.48 (16)
Spectrum exposure9.5 ks