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Swift-XRT spectra of GRB 121128A

Last updated after receiving ObsID 00539866007, version 10.

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The spectral fits assume a redshift: 2.2 (GCN 14009)

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Time-averaged spectrum (T0 + 83 to 64526 s)

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WT and PC mode spectra of GRB 121128A

WT mode. Mean photon arrival: T0+117 s

N_H (Galactic)	3.3 × 10²¹ cm^-2
N_H (intrinsic)	2.9 (+6.8, -2.9) × 10²¹ cm^-2
z of absorber	2.2
Photon index	2.35 (+0.12, -0.10)
Flux (0.3-10 keV) (Observed)	5.9 (+0.4, -0.3) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.10 (+0.06, -0.08) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	366.60 (407)
Spectrum exposure	108 s

PC mode. Mean photon arrival: T0+4922 s

N_H (Galactic)	3.3 × 10²¹ cm^-2
N_H (intrinsic)	5 (+8, -5) × 10²¹ cm^-2
z of absorber	2.2
Photon index	1.85 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	1.35 (+0.08, -0.08) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.916 (+0.113, -0.076) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	468.92 (490)
Spectrum exposure	16.5 ks

Late Time spectrum (T0 + 6936 to 64526 s)

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PC mode spectrum of GRB 121128A

PC mode. Mean photon arrival: T0+22132 s

N_H (Galactic)	3.3 × 10²¹ cm^-2
N_H (intrinsic)	5.6 (+20.9, -5.6) × 10²¹ cm^-2
z of absorber	2.2
Photon index	1.98 (+0.23, -0.19)
Flux (0.3-10 keV) (Observed)	1.13 (+0.17, -0.15) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.71 (+0.20, -0.15) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	4 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	172.15 (222)
Spectrum exposure	14.2 ks