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Swift-XRT spectra of GRB 121128A

Last updated after receiving ObsID 00539866003, version 6.

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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)	2.1 × 10²¹ cm^-2
N_H (intrinsic)	1.2 (+0.4, -0.4) × 10²² cm^-2
z of absorber	2.2
Photon index	2.43 (+0.11, -0.11)
Flux (0.3-10 keV) (Observed)	6.0 (+0.4, -0.3) × 10^-10 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.238 (+0.089, -0.108) × 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
C-stat (dof)	387.45 (421)
Exposure time	108 s

PC mode. Mean photon arrival: T0+4898 s

N_H (Galactic)	2.1 × 10²¹ cm^-2
N_H (intrinsic)	1.1 (+0.5, -0.5) × 10²² cm^-2
z of absorber	2.2
Photon index	1.99 (+0.10, -0.09)
Flux (0.3-10 keV) (Observed)	1.32 (+0.08, -0.07) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.03 (+0.12, -0.22) × 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
C-stat (dof)	448.01 (489)
Exposure time	16.5 ks

Late Time spectrum (T0 + 6936 to 64526 s)

Download spectral files for Late Time spectrum.

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PC mode spectrum of GRB 121128A

PC mode. Mean photon arrival: T0+22021 s

N_H (Galactic)	2.1 × 10²¹ cm^-2
N_H (intrinsic)	1.30 (+1.26, -1.00) × 10²² cm^-2
z of absorber	2.2
Photon index	2.12 (+0.21, -0.21)
Flux (0.3-10 keV) (Observed)	1.12 (+0.16, -0.14) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.88 (+0.24, -0.37) × 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
C-stat (dof)	189.85 (211)
Exposure time	14.2 ks