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Swift-XRT spectra of GRB 171020A

Last updated after receiving ObsID 00780845004, version 9

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 1.87 (GCN 22039)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 151 to 52316 s)

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PC mode spectrum of Time-averaged

PC mode. Mean photon arrival: T0+8285 s

NH (Galactic)1.55 × 1021 cm-2
NH (intrinsic)2.0 (+7.0, -2.0) × 1021 cm-2
z of absorber1.87
Photon index1.56 (+0.15, -0.13)
Flux (0.3-10 keV)
(Observed)
4.1 (+0.5, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.7 (+0.4, -0.4) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.47 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.21 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
269.50 (310)
Spectrum exposure12.2 ks

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Late Time spectrum (T0 + 5211 to 52316 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+21610 s

NH (Galactic)1.55 × 1021 cm-2
NH (intrinsic)1.7 (+1.9, -1.4) × 1022 cm-2
z of absorber1.87
Photon index1.96 (+0.32, -0.29)
Flux (0.3-10 keV)
(Observed)
9.6 (+2.0, -1.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.37 (+0.26, -0.19) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.66 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.24 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
99.97 (147)
Spectrum exposure10.4 ks

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