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Swift-XRT spectra of GRB 141221A

Last updated after receiving ObsID 00622006004, version 12

Data were analysed using HEASOFT version 6.35.2

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Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 44272 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+92 s

N_H (Galactic)	2.27 × 10²⁰ cm^-2
N_H (intrinsic)	0 (+1.05 × 10²¹, -0) cm^-2
z of absorber	0
Photon index	1.7 (+0.6, -0.3)
Flux (0.3-10 keV) (Observed)	1.3 (+0.5, -0.4) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.3 (+0.4, -0.4) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.16 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.32 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	35.77 (43)
Spectrum exposure	17 s

PC mode. Mean photon arrival: T0+6672 s

N_H (Galactic)	2.27 × 10²⁰ cm^-2
N_H (intrinsic)	3.0 (+0.8, -0.7) × 10²¹ cm^-2
z of absorber	0
Photon index	2.24 (+0.19, -0.19)
Flux (0.3-10 keV) (Observed)	4.9 (+0.5, -0.4) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	8.3 (+0.8, -0.8) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.32 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.67 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	284.36 (292)
Spectrum exposure	11.5 ks

Late Time spectrum (T0 + 4002 to 44272 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+16058 s

N_H (Galactic)	2.27 × 10²⁰ cm^-2
N_H (intrinsic)	2.11 (+1.17, -0.97) × 10²¹ cm^-2
z of absorber	0
Photon index	2.09 (+0.31, -0.29)
Flux (0.3-10 keV) (Observed)	1.11 (+0.20, -0.16) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.64 (+0.24, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.42 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.03 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	163.66 (173)
Spectrum exposure	10.8 ks