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Swift-XRT spectra of GRB 121128A

Last updated after receiving ObsID 00539866007, version 11

Data were analysed using HEASOFT version 6.29

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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

NH (Galactic)3.32 × 1021 cm-2
NH (intrinsic)9 (+7, -6) × 1021 cm-2
z of absorber2.2
Photon index2.41 (+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)
1.212 (+0.104, -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 exposure108 s

PC mode. Mean photon arrival: T0+4880 s

NH (Galactic)3.32 × 1021 cm-2
NH (intrinsic)6 (+8, -6) × 1021 cm-2
z of absorber2.2
Photon index1.85 (+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 exposure16.6 ks

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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

NH (Galactic)3.32 × 1021 cm-2
NH (intrinsic)8.5 (+21.1, -8.5) × 1021 cm-2
z of absorber2.2
Photon index2.01 (+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 exposure14.3 ks

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