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Swift-XRT spectra of GRB 260909A — Source 4

Last updated at 2026-09-12 at 11:44:08 UTC

About these products.

Time-averaged spectrum (T0 + 137704 to 253841 s)

Download spectral files for Time-averaged spectrum.

Plots to download

PC mode spectrum of GRB 260909A

PC mode. Mean photon arrival: T0+237788 s

N_H (Galactic)	4.52 × 10²⁰ cm^-2
N_H (intrinsic)	3.0 (+4.0, -1.1) × 10²³ cm^-2
z of absorber	0
Photon index	24.2 (+74.3, -27.2)
Flux (0.3-10 keV) (Observed)	6 (+9, -4) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.4 (+1.00 × 10⁶⁰, -999999999999999949387135297074018866963645011013410073083904.0) × 10^-60 erg cm^-2 s^-1
Counts to flux (obs)	1.98 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.67 × 10^-58 erg cm^-2 ct^-1
W-stat What's this?(dof)	6.35 (2)
Spectrum exposure	2.2 ks