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Swift-XRT spectra of GRB 160821B

Last updated after receiving ObsID 00709357010, version 4

Data were analysed using HEASOFT version 6.28

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 72 to 47180 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+145 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)3.4 (+2.0, -1.9) × 1020 cm-2
z of absorber0
Photon index1.99 (+0.08, -0.08)
Flux (0.3-10 keV)
(Observed)
5.84 (+0.26, -0.25) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.33 (+0.38, -0.20) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.27 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.55 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
525.95 (483)
Spectrum exposure198 s

PC mode. Mean photon arrival: T0+9074 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)0 (+4.46 × 1020, -0) cm-2
z of absorber0
Photon index2.20 (+0.28, -0.24)
Flux (0.3-10 keV)
(Observed)
5.03 (+1.06, -0.87) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.8 (+0.7, -0.9) × 10-13 erg cm-2 s-1
Counts to flux (obs)2.97 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.26 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
81.08 (99)
Spectrum exposure11.6 ks

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Late Time spectrum (T0 + 4873 to 47180 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+17959 s

NH (Galactic)5.75 × 1020 cm-2
NH (intrinsic)1.6 (+3.3, -1.6) × 1021 cm-2
z of absorber0
Photon index2.1 (+0.7, -0.6)
Flux (0.3-10 keV)
(Observed)
2.3 (+1.0, -0.7) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.5 (+0.8, -0.7) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.43 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)2.26 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
50.61 (60)
Spectrum exposure11.4 ks

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