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Swift-XRT spectra of GRB 250309B/IceCube-250309A — Source 27

Last updated at 2025-03-11 at 12:24:51 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 27

PC mode. Mean photon arrival: T0+67223 s

N_H (Galactic)	2.99 × 10²⁰ cm^-2
N_H (intrinsic)	5.7 (+14.6, -5.7) × 10²¹ cm^-2
z of absorber	0
Photon index	10 (+87, -10)
Flux (0.3-10 keV) (Observed)	1.7 (+2.3, -1.3) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8 (+1.00 × 10¹⁴, -5) × 10^-14 erg cm^-2 s^-1
Counts to flux (obs)	1.98 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	9.00 × 10^-11 erg cm^-2 ct^-1
W-stat What's this?(dof)	1.15 (2)
Spectrum exposure	8.2 ks