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Swift-XRT spectra of GRB 221226B

Last updated after receiving ObsID 01145959001, version 24

Data were analysed using HEASOFT version 6.35.2

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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 (+1.36 × 10²⁴, -0) cm^-2
z of absorber	2.694
Photon index	1.15 (+1.02, -0.61)
Flux (0.3-10 keV) (Observed)	1.54 (+1.06, -0.71) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.56 (+1.04, -0.73) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	4.16 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.21 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	29.58 (32)
Spectrum exposure	14 s

PC mode. Mean photon arrival: T0+4241 s

N_H (Galactic)	1.69 × 10²⁰ cm^-2
N_H (intrinsic)	1.5 (+2.8, -1.5) × 10²² cm^-2
z of absorber	2.694
Photon index	1.6 (+0.4, -0.3)
Flux (0.3-10 keV) (Observed)	1.8 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.0 (+0.4, -0.4) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4.34 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.81 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	95.61 (105)
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)	2.9 (+7.6, -2.9) × 10²² cm^-2
z of absorber	2.694
Photon index	2.47 (+1.29, -0.99)
Flux (0.3-10 keV) (Observed)	1.2 (+0.9, -0.5) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.8 (+3.7, -0.7) × 10^-13 erg cm^-2 s^-1
Counts to flux (obs)	2.84 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.46 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	15.06 (22)
Spectrum exposure	8.8 ks