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Swift-XRT spectra of GRB 121211A

Last updated after receiving ObsID 00541200004, version 7

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 1.023 (GCN 14059)

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 95 to 121785 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+203 s

N_H (Galactic)	9.76 × 10¹⁹ cm^-2
N_H (intrinsic)	1.25 (+0.08, -0.07) × 10²² cm^-2
z of absorber	1.023
Photon index	1.86 (+0.03, -0.03)
Flux (0.3-10 keV) (Observed)	4.71 (+0.10, -0.10) × 10^-9 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	6.30 (+0.11, -0.11) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.80 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.08 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	762.88 (741)
Spectrum exposure	199 s

PC mode. Mean photon arrival: T0+19120 s

N_H (Galactic)	9.76 × 10¹⁹ cm^-2
N_H (intrinsic)	7.8 (+1.7, -1.6) × 10²¹ cm^-2
z of absorber	1.023
Photon index	1.97 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	3.11 (+0.23, -0.21) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.06 (+0.24, -0.23) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.48 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.55 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	327.02 (386)
Spectrum exposure	20.4 ks

Late Time spectrum (T0 + 4002 to 121785 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19290 s

N_H (Galactic)	9.76 × 10¹⁹ cm^-2
N_H (intrinsic)	7.6 (+1.7, -1.6) × 10²¹ cm^-2
z of absorber	1.023
Photon index	1.97 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	3.05 (+0.22, -0.21) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	3.98 (+0.24, -0.22) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.48 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	4.54 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	320.38 (386)
Spectrum exposure	20.3 ks