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Swift-XRT spectra of GRB 250309B/IceCube-250309A — Source 18

Last updated at 2025-03-11 at 12:25:05 UTC

About these products.

Time-averaged spectrum (T0 + 46059 to 136018 s)

Download spectral files for Time-averaged spectrum.

Plots to download

PC mode spectrum of GRB 250309B/IceCube-250309A - source 18

PC mode. Mean photon arrival: T0+65482 s

N_H (Galactic)	2.99 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.65 × 10²³, -0) cm^-2
z of absorber	0
Photon index	1.5 (+2.1, -1.8)
Flux (0.3-10 keV) (Observed)	5 (+7, -3) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5 (+7, -4) × 10^-14 erg cm^-2 s^-1
Counts to flux (obs)	3.33 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.76 × 10^-11 erg cm^-2 ct^-1
W-stat What's this?(dof)	10.87 (6)
Spectrum exposure	8.2 ks