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Swift-XRT spectra of GRB 121117A

Last updated after receiving ObsID 00538696001, version 15.

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Time-averaged spectrum (T0 + 55 to 113915 s)

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WT and PC mode spectra of GRB 121117A

WT mode. Mean photon arrival: T0+119 s

NH (Galactic)6.32 × 1020 cm-2
NH (intrinsic)0 (+8.95 × 1020, -0) cm-2
z of absorber0
Photon index1.45 (+0.21, -0.13)
Flux (0.3-10 keV)
(Observed)
2.17 (+0.24, -0.28) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.32 (+0.23, -0.24) × 10-10 erg cm-2 s-1
Counts to flux (obs)4.22 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.51 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
296.07 (334)
Spectrum exposure147 s

PC mode. Mean photon arrival: T0+11272 s

NH (Galactic)6.32 × 1020 cm-2
NH (intrinsic)0 (+8.87 × 1020, -0) cm-2
z of absorber0
Photon index1.94 (+0.47, -0.17)
Flux (0.3-10 keV)
(Observed)
2.4 (+0.4, -0.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.8 (+0.5, -0.6) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.32 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.78 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
74.63 (99)
Spectrum exposure21.8 ks

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Late Time spectrum (T0 + 4000 to 113915 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+12268 s

NH (Galactic)6.32 × 1020 cm-2
NH (intrinsic)1.1 (+10.7, -1.1) × 1020 cm-2
z of absorber0
Photon index2.16 (+0.47, -0.28)
Flux (0.3-10 keV)
(Observed)
2.0 (+0.4, -0.4) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.5 (+0.5, -0.5) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.01 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.69 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
74.12 (87)
Spectrum exposure21.4 ks

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