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Swift-XRT spectra of GRB 250917B — Source 1

Last updated at 2025-09-19 at 05:46:44 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+59393 s

NH (Galactic)7.33 × 1021 cm-2
NH (intrinsic)0 (+4.37 × 1021, -0) cm-2
z of absorber0
Photon index3.20 (+1.20, -0.45)
Flux (0.3-10 keV)
(Observed)
1.4 (+0.6, -0.4) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8 (+8, -3) × 10-13 erg cm-2 s-1
Counts to flux (obs)2.53 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.41 × 10-10 erg cm-2 ct-1
W-stat
What's this?(dof)
30.31 (39)
Spectrum exposure9.5 ks