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Swift-XRT spectra of GRB 221226B

Last updated after receiving ObsID 01145959001, version 24

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

The spectral fits assume a redshift: 2.694 (GCN 33110)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 76 to 68074 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+82 s

N_H (Galactic)	1.69 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+6.92 × 10²³, -0) cm^-2
z of absorber	2.694
Photon index	1.21 (+1.83, -0.54)
Flux (0.3-10 keV) (Observed)	2.5 (+1.5, -1.2) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.5 (+1.2, -1.1) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.94 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.00 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	26.70 (31)
Spectrum exposure	14 s

PC mode. Mean photon arrival: T0+4580 s

N_H (Galactic)	1.69 × 10²⁰ cm^-2
N_H (intrinsic)	1.3 (+2.5, -1.3) × 10²² cm^-2
z of absorber	2.694
Photon index	1.6 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.6 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.8 (+0.4, -0.3) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.27 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.66 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	91.02 (99)
Spectrum exposure	9.4 ks

Late Time spectrum (T0 + 4002 to 68074 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19221 s

N_H (Galactic)	1.69 × 10²⁰ cm^-2
N_H (intrinsic)	3.0 (+7.4, -3.0) × 10²² cm^-2
z of absorber	2.694
Photon index	2.49 (+1.28, -0.99)
Flux (0.3-10 keV) (Observed)	1.1 (+0.9, -0.4) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.8 (+3.4, -0.7) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	2.76 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.41 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	15.23 (22)
Spectrum exposure	8.8 ks