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Swift-XRT spectra of GRB 121128A

Last updated after receiving ObsID 00539866007, version 11

Data were analysed using HEASOFT version 6.32

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Add time-sliced spectrum.

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

Jump to: Time-averaged|Late Time

Time-averaged spectrum (T0 + 83 to 64546 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+117 s

N_H (Galactic)	3.32 × 10²¹ cm^-2
N_H (intrinsic)	9 (+7, -6) × 10²¹ cm^-2
z of absorber	2.2
Photon index	2.41 (+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)	1.217 (+0.105, -0.087) × 10^-9 erg cm^-2 s^-1
Counts to flux (obs)	3.04 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	6.15 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	358.15 (412)
Spectrum exposure	108 s

PC mode. Mean photon arrival: T0+4880 s

N_H (Galactic)	3.32 × 10²¹ cm^-2
N_H (intrinsic)	6 (+8, -6) × 10²¹ cm^-2
z of absorber	2.2
Photon index	1.85 (+0.09, -0.09)
Flux (0.3-10 keV) (Observed)	1.51 (+0.09, -0.09) × 10^-11 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	2.136 (+0.108, -0.099) × 10^-11 erg cm^-2 s^-1
Counts to flux (obs)	4.18 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.91 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	471.29 (489)
Spectrum exposure	16.6 ks

Late Time spectrum (T0 + 6936 to 64546 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+23561 s

N_H (Galactic)	3.32 × 10²¹ cm^-2
N_H (intrinsic)	8.5 (+21.1, -8.5) × 10²¹ cm^-2
z of absorber	2.2
Photon index	2.01 (+0.25, -0.22)
Flux (0.3-10 keV) (Observed)	1.17 (+0.18, -0.16) × 10^-12 erg cm^-2 s^-1
Flux (0.3-10 keV) (Unabsorbed)	1.80 (+0.28, -0.21) × 10^-12 erg cm^-2 s^-1
Counts to flux (obs)	3.86 × 10^-11 erg cm^-2 ct^-1
Counts to flux (unabs)	5.96 × 10^-11 erg cm^-2 ct^-1
W-stat (dof) What's this?	162.17 (207)
Spectrum exposure	14.3 ks