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Swift-XRT spectra of GRB 160821B

Last updated after receiving ObsID 00709357010, version 4

Data were analysed using HEASOFT version 6.32

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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)
6.03 (+0.27, -0.26) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.30 (+0.27, -0.27) × 10-10 erg cm-2 s-1
Counts to flux (obs)3.27 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.96 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
523.58 (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)
5.53 (+1.16, -0.95) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.6 (+1.1, -1.7) × 10-13 erg cm-2 s-1
Counts to flux (obs)2.97 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)3.54 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
81.07 (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)
2.54 (+1.08, -0.72) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
3.64 (+1.31, -0.92) × 10-13 erg cm-2 s-1
Counts to flux (obs)3.44 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.93 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
50.61 (60)
Spectrum exposure11.4 ks

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