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Swift-XRT spectra of GRB 211227A

Last updated after receiving ObsID 01091101001, version 16

Data were analysed using HEASOFT version 6.29

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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	1.11 (+0.07, -0.07)
Flux (0.3-10 keV) (Observed)	1.88 (+0.09, -0.08) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.05 (+0.07, -0.07) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	6.09 × 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?	628.12 (692)
Spectrum exposure	182 s

PC mode. Mean photon arrival: T0+933 s

N_H (Galactic)	2.37 × 10²⁰ cm^-2
N_H (intrinsic)	2.9 (+1.8, -1.5) × 10²¹ cm^-2
z of absorber	0
Photon index	3.0 (+0.7, -0.6)
Flux (0.3-10 keV) (Observed)	8.7 (+2.1, -1.6) × 10^-13 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.5 (+0.7, -0.6) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	2.46 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	7.05 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	63.93 (90)
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)	4.4 (+25.1, -4.4) × 10²¹ cm^-2
z of absorber	0
Photon index	2.1 (+4.6, -1.7)
Flux (0.3-10 keV) (Observed)	4 (+9, -3) × 10^-14 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	7.6 (+21.7, -5.0) × 10^-14 erg cm^-2 s^-1
Counts to flux (obs)	3.73 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.55 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	3.81 (5)
Spectrum exposure	8.5 ks