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Swift-XRT spectra of GRB 170912A

Last updated after receiving ObsID 00772006003, version 8

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 122 to 17002 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+129 s

NH (Galactic)3.14 × 1021 cm-2
NH (intrinsic)0 (+1.50 × 1021, -0) cm-2
z of absorber0
Photon index2.7 (+0.8, -0.4)
Flux (0.3-10 keV)
(Observed)
1.1 (+0.4, -0.3) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.5 (+1.4, -1.3) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.50 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.89 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
37.94 (51)
Spectrum exposure17 s

PC mode. Mean photon arrival: T0+3061 s

NH (Galactic)3.14 × 1021 cm-2
NH (intrinsic)0 (+1.32 × 1021, -0) cm-2
z of absorber0
Photon index1.96 (+0.42, -0.20)
Flux (0.3-10 keV)
(Observed)
1.7 (+0.3, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.3 (+0.7, -0.5) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.71 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.06 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
79.15 (92)
Spectrum exposure3.5 ks

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Late Time spectrum (T0 + 5480 to 17002 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13532 s

NH (Galactic)3.14 × 1021 cm-2
NH (intrinsic)0 (+1.02 × 1022, -0) cm-2
z of absorber0
Photon index1.14 (+1.33, -0.46)
Flux (0.3-10 keV)
(Observed)
7 (+5, -4) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8 (+6, -3) × 10-13 erg cm-2 s-1
Counts to flux (obs)5.97 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.57 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
27.14 (19)
Spectrum exposure2.2 ks

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