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Swift-XRT spectra of GRB 250309B/IceCube-250309A — Source 28

Last updated at 2025-03-11 at 12:26:02 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 28

PC mode. Mean photon arrival: T0+77954 s

N_H (Galactic)	2.96 × 10²⁰ cm^-2
N_H (intrinsic)	5 (+33, -5) × 10²¹ cm^-2
z of absorber	0
Photon index	1.5 (+3.2, -1.7)
Flux (0.3-10 keV) (Observed)	7.8 (+12.4, -5.6) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	9.9 (+28.5, -6.3) × 10^-14 erg cm^-2 s^-1
Counts to flux (obs)	4.71 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.01 × 10^-11 erg cm^-2 ct^-1
W-stat What's this?(dof)	6.96 (5)
Spectrum exposure	8.2 ks