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Swift-XRT spectra of GRB 191220A

Last updated after receiving ObsID 00945344004, version 7

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 138 to 29100 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+154 s

N_H (Galactic)	1.53 × 10²¹ cm^-2
N_H (intrinsic)	0 (+7.03 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.39 (+0.36, -0.24)
Flux (0.3-10 keV) (Observed)	1.38 (+0.23, -0.24) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.1 (+0.4, -0.6) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	2.67 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.05 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	91.81 (125)
Spectrum exposure	38 s

PC mode. Mean photon arrival: T0+8475 s

N_H (Galactic)	1.53 × 10²¹ cm^-2
N_H (intrinsic)	0 (+3.66 × 10²⁰, -0) cm^-2
z of absorber	0
Photon index	2.02 (+0.15, -0.13)
Flux (0.3-10 keV) (Observed)	1.843 (+0.098, -0.197) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.42 (+0.23, -0.32) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.35 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.39 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	177.28 (221)
Spectrum exposure	9.8 ks

Late Time spectrum (T0 + 4261 to 29100 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+14684 s

N_H (Galactic)	1.53 × 10²¹ cm^-2
N_H (intrinsic)	2.7 (+11.3, -2.7) × 10²⁰ cm^-2
z of absorber	0
Photon index	2.11 (+0.34, -0.24)
Flux (0.3-10 keV) (Observed)	1.07 (+0.19, -0.17) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.50 (+0.35, -0.22) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.25 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.58 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	107.35 (155)
Spectrum exposure	8.9 ks