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Swift-XRT spectra of GRB 170318A

Last updated after receiving ObsID 00743065001, version 3

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 114 to 41065 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+156 s

NH (Galactic)4.45 × 1021 cm-2
NH (intrinsic)3.8 (+3.3, -2.6) × 1021 cm-2
z of absorber0
Photon index0.93 (+0.22, -0.20)
Flux (0.3-10 keV)
(Observed)
6.4 (+0.7, -0.7) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.3 (+0.7, -0.6) × 10-10 erg cm-2 s-1
Counts to flux (obs)7.85 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)8.99 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
350.18 (417)
Spectrum exposure94 s

PC mode. Mean photon arrival: T0+2707 s

NH (Galactic)4.45 × 1021 cm-2
NH (intrinsic)3 (+4, -3) × 1021 cm-2
z of absorber0
Photon index0.90 (+0.32, -0.30)
Flux (0.3-10 keV)
(Observed)
9.0 (+1.6, -1.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.02 (+0.14, -0.13) × 10-11 erg cm-2 s-1
Counts to flux (obs)8.53 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.66 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
202.17 (201)
Spectrum exposure7.0 ks

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Late Time spectrum (T0 + 5584 to 41065 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+23138 s

NH (Galactic)4.45 × 1021 cm-2
NH (intrinsic)8.8 (+25.7, -8.8) × 1021 cm-2
z of absorber0
Photon index1.7 (+1.7, -1.2)
Flux (0.3-10 keV)
(Observed)
4.2 (+4.2, -1.9) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.9 (+55.6, -2.6) × 10-13 erg cm-2 s-1
Counts to flux (obs)6.50 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.06 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
20.99 (24)
Spectrum exposure6.5 ks

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