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Swift-XRT spectra of GRB 220101A

Last updated after receiving ObsID 01091527013, version 11

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 4.61 (GCN 31353)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 87 to 40110 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+157 s

N_H (Galactic)	6.29 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+5.95 × 10²⁰, -0) cm^-2
z of absorber	4.61
Photon index	1.471 (+0.015, -0.018)
Flux (0.3-10 keV) (Observed)	1.422 (+0.030, -0.021) × 10^-8 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.519 (+0.029, -0.022) × 10^-8 erg cm^-2 s^-1
Counts to flux (obs)	4.38 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.68 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	987.65 (810)
Spectrum exposure	152 s

PC mode. Mean photon arrival: T0+19092 s

N_H (Galactic)	6.29 × 10²⁰ cm^-2
N_H (intrinsic)	6 (+9, -6) × 10²¹ cm^-2
z of absorber	4.61
Photon index	1.62 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	6.28 (+0.24, -0.23) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.90 (+0.21, -0.20) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.18 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.59 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	542.12 (620)
Spectrum exposure	10.5 ks

Late Time spectrum (T0 + 4002 to 40110 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19509 s

N_H (Galactic)	6.29 × 10²⁰ cm^-2
N_H (intrinsic)	5 (+9, -5) × 10²¹ cm^-2
z of absorber	4.61
Photon index	1.62 (+0.05, -0.05)
Flux (0.3-10 keV) (Observed)	6.09 (+0.23, -0.22) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.68 (+0.21, -0.20) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.19 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.59 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	523.74 (614)
Spectrum exposure	10.3 ks