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Swift-XRT spectra of GRB 170728A

Last updated after receiving ObsID 00765008001, version 9

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 74 to 22162 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+79 s

NH (Galactic)2.27 × 1021 cm-2
NH (intrinsic)4.1 (-4.1, -2.8) × 1025 cm-2
z of absorber0
Photon index99.2 (-99.2, -102.2)
Flux (0.3-10 keV)
(Observed)
4.2 (+3.1, -2.4) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4 (+1.00 × 109, +999999996) × 10-9 erg cm-2 s-1
Counts to flux (obs)1.76 × 10-9 erg cm-2 ct-1
Counts to flux (unabs)1.76 × 10-9 erg cm-2 ct-1
W-stat (dof)
What's this?
5.59 (11)
Spectrum exposure8 s

PC mode. Mean photon arrival: T0+2830 s

NH (Galactic)2.27 × 1021 cm-2
NH (intrinsic)0 (+8.84 × 1020, -0) cm-2
z of absorber0
Photon index2.12 (+0.32, -0.13)
Flux (0.3-10 keV)
(Observed)
2.6 (+0.3, -0.4) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.9 (+0.3, -0.6) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.32 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.96 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
137.36 (173)
Spectrum exposure4.8 ks

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Late Time spectrum (T0 + 4000 to 22162 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9138 s

NH (Galactic)2.27 × 1021 cm-2
NH (intrinsic)1.8 (+3.3, -1.8) × 1021 cm-2
z of absorber0
Photon index2.1 (+0.7, -0.6)
Flux (0.3-10 keV)
(Observed)
8.2 (+3.0, -2.2) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.39 (+1.01, -0.34) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.64 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.18 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
59.64 (59)
Spectrum exposure4.1 ks

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