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Swift-XRT spectra of GRB 221231A

Last updated after receiving ObsID 00021534002, version 8

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

Time-averaged spectrum (T0 + 32689 to 44302 s)

Download spectral files for Time-averaged spectrum.

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+35935 s

N_H (Galactic)	6.44 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+2.31 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.4 (+0.8, -0.3)
Flux (0.3-10 keV) (Observed)	4.5 (+2.1, -1.9) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.9 (+1.8, -1.8) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	4.64 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.98 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	22.96 (28)
Spectrum exposure	5.0 ks