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Swift-XRT spectra of GRB 170311A

Last updated after receiving ObsID 00741965001, version 7

Data were analysed using HEASOFT version 6.26.1

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 108 to 56644 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+122 s

NH (Galactic)1.30 × 1021 cm-2
NH (intrinsic)1.1 (+4.5, -1.1) × 1021 cm-2
z of absorber0
Photon index2.44 (+1.68, -0.83)
Flux (0.3-10 keV)
(Observed)
4.6 (+2.7, -2.0) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.2 (+11.8, -3.7) × 10-11 erg cm-2 s-1
Counts to flux (obs)2.70 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.87 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
20.14 (30)
Spectrum exposure23 s

PC mode. Mean photon arrival: T0+4182 s

NH (Galactic)1.30 × 1021 cm-2
NH (intrinsic)1.4 (+1.8, -1.4) × 1021 cm-2
z of absorber0
Photon index1.55 (+0.29, -0.27)
Flux (0.3-10 keV)
(Observed)
1.36 (+0.25, -0.21) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.65 (+0.20, -0.20) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.80 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.82 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
165.68 (202)
Spectrum exposure13.0 ks

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Late Time spectrum (T0 + 4779 to 56644 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+19834 s

NH (Galactic)1.30 × 1021 cm-2
NH (intrinsic)4 (+6, -3) × 1021 cm-2
z of absorber0
Photon index2.6 (+1.0, -0.7)
Flux (0.3-10 keV)
(Observed)
1.6 (+0.7, -0.5) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.5 (+6.8, -1.8) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.05 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)8.29 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
37.97 (50)
Spectrum exposure11.6 ks

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