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Swift-XRT spectra of GRB 121108A

Last updated after receiving ObsID 00537921006, version 6

Data were analysed using HEASOFT version 6.22

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 60 to 76811 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+131 s

NH (Galactic)3.16 × 1021 cm-2
NH (intrinsic)1.3 (+0.7, -0.6) × 1021 cm-2
z of absorber0
Photon index1.44 (+0.09, -0.09)
Flux (0.3-10 keV)
(Observed)
1.921 (+0.101, -0.097) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.37 (+0.10, -0.09) × 10-9 erg cm-2 s-1
Counts to flux (obs)5.42 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.68 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
520.54 (624)
Spectrum exposure84 s

PC mode. Mean photon arrival: T0+8086 s

NH (Galactic)3.16 × 1021 cm-2
NH (intrinsic)0 (+1.06 × 1021, -0) cm-2
z of absorber0
Photon index1.62 (+0.19, -0.11)
Flux (0.3-10 keV)
(Observed)
1.35 (+0.13, -0.14) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.71 (+0.13, -0.14) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.64 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.88 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
272.67 (318)
Spectrum exposure29.4 ks

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Late Time spectrum (T0 + 5197 to 76811 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+22042 s

NH (Galactic)3.16 × 1021 cm-2
NH (intrinsic)1.2 (+2.0, -1.2) × 1021 cm-2
z of absorber0
Photon index2.0 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
3.6 (+0.8, -0.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
5.85 (+1.67, -0.98) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.84 × 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?
111.54 (156)
Spectrum exposure27.8 ks

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