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Swift-XRT spectra of GRB 120118B

Last updated after receiving ObsID 00512003004, version 8.

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The spectral fits assume a redshift: 2.943 (GCN 14225)

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Time-averaged spectrum (T0 + 115 to 39843 s)

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WT and PC mode spectra of GRB 120118B

WT mode. Mean photon arrival: T0+124 s

N_H (Galactic)	6.9 × 10²⁰ cm^-2
N_H (intrinsic)	2.9 (+21.3, -2.9) × 10²¹ cm^-2
z of absorber	2.943
Photon index	1.87 (+0.44, -0.31)
Flux (0.3-10 keV) (Observed)	2.07 (+0.62, -0.50) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.48 (+0.62, -0.51) × 10^-10 erg cm^-2 s^-1
Counts to flux (obs)	3.2 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	3.8 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	69.75 (80)
Exposure time	19 s

PC mode. Mean photon arrival: T0+7442 s

N_H (Galactic)	6.9 × 10²⁰ cm^-2
N_H (intrinsic)	4.0 (+1.3, -1.1) × 10²² cm^-2
z of absorber	2.943
Photon index	2.06 (+0.15, -0.14)
Flux (0.3-10 keV) (Observed)	3.71 (+0.34, -0.31) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	5.65 (+0.54, -0.45) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.8 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.7 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	250.68 (330)
Exposure time	9.4 ks

Late Time spectrum (T0 + 5317 to 39843 s)

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PC mode spectrum of GRB 120118B

PC mode. Mean photon arrival: T0+12616 s

N_H (Galactic)	6.9 × 10²⁰ cm^-2
N_H (intrinsic)	6.6 (+2.6, -2.1) × 10²² cm^-2
z of absorber	2.943
Photon index	2.12 (+0.22, -0.21)
Flux (0.3-10 keV) (Observed)	2.43 (+0.31, -0.27) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	4.13 (+0.71, -0.50) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.8 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.5 × 10^-11 erg cm^-2 ct^-1
C-stat (dof)	193.23 (249)
Exposure time	8.0 ks