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Swift-XRT spectra of GRB 250917B — Source 9

Last updated at 2025-09-19 at 05:46:26 UTC

About these products.

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

Download spectral files for Time-averaged spectrum.

Plots to download

PC mode spectrum of GRB 250917B

PC mode. Mean photon arrival: T0+69855 s

N_H (Galactic)	7.17 × 10²¹ cm^-2
N_H (intrinsic)	1.7 (+0.7, -0.5) × 10²⁴ cm^-2
z of absorber	0
Photon index/th>	99.36 (+??, -99.36)
Flux (0.3-10 keV) (Observed)	1.7 (+4.7, -1.2) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2 (+1.00 × 10¹², -999999999998) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	1.53 × 10^-9 erg cm^-2 ct^-1
Counts to flux (unabs)	1.53 × 10^-9 erg cm^-2 ct^-1
W-stat What's this?(dof)	6.70 (5)
Spectrum exposure	9.5 ks