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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)

Jump to: Time-averaged|Late Time

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

NH (Galactic)3.32 × 1021 cm-2
NH (intrinsic)2.8 (+6.7, -2.8) × 1021 cm-2
z of absorber2.2
Photon index2.344 (+0.113, -0.098)
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, -0.09) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.11 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.81 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
368.04 (407)
Spectrum exposure108 s

PC mode. Mean photon arrival: T0+4909 s

NH (Galactic)3.32 × 1021 cm-2
NH (intrinsic)6 (+8, -6) × 1021 cm-2
z of absorber2.2
Photon index1.86 (+0.09, -0.09)
Flux (0.3-10 keV)
(Observed)
1.36 (+0.08, -0.08) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.93 (+0.09, -0.07) × 10-11 erg cm-2 s-1
Counts to flux (obs)4.19 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.94 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
469.92 (490)
Spectrum exposure16.5 ks

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Late Time spectrum (T0 + 6936 to 64526 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+22107 s

NH (Galactic)3.32 × 1021 cm-2
NH (intrinsic)2.1 (+24.9, -2.1) × 1021 cm-2
z of absorber2.2
Photon index1.95 (+0.15, -0.17)
Flux (0.3-10 keV)
(Observed)
1.15 (+0.16, -0.16) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.69 (+0.16, -0.15) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.93 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.80 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
170.50 (222)
Spectrum exposure14.2 ks

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