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Swift-XRT spectra of GRB 211227A

Last updated after receiving ObsID 01091101004, version 14

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 79 to 73704 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+130 s

N_H (Galactic)	2.37 × 10²⁰ cm^-2
N_H (intrinsic)	2.0 (+0.5, -0.4) × 10²¹ cm^-2
z of absorber	0
Photon index	1.12 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	1.83 (+0.08, -0.08) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.00 (+0.07, -0.07) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	6.07 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.63 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	683.16 (692)
Spectrum exposure	182 s

PC mode. Mean photon arrival: T0+1021 s

N_H (Galactic)	2.37 × 10²⁰ cm^-2
N_H (intrinsic)	3.5 (+2.1, -1.7) × 10²¹ cm^-2
z of absorber	0
Photon index	3.1 (+0.7, -0.6)
Flux (0.3-10 keV) (Observed)	8.0 (+2.1, -1.6) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.87 (+12.21, -0.81) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.39 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	8.56 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	49.10 (87)
Spectrum exposure	9.3 ks

Late Time spectrum (T0 + 4682 to 73704 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9484 s

N_H (Galactic)	2.37 × 10²⁰ cm^-2
N_H (intrinsic)	4.6 (+27.4, -4.6) × 10²¹ cm^-2
z of absorber	0
Photon index	2.1 (+2.4, -1.7)
Flux (0.3-10 keV) (Observed)	5 (+9, -3) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.7 (+21.2, -4.9) × 10^-14 erg cm^-2 s^-1
Counts to flux (obs)	3.88 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.59 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	3.77 (5)
Spectrum exposure	8.5 ks