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Swift-XRT spectra of GRB 190821A

Last updated after receiving ObsID 00921722001, version 9

Data were analysed using HEASOFT version 6.32

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 84 to 33891 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+93 s

NH (Galactic)3.35 × 1021 cm-2
NH (intrinsic)1.6 (+1.2, -1.1) × 1021 cm-2
z of absorber0
Photon index3.1 (+0.4, -0.3)
Flux (0.3-10 keV)
(Observed)
3.8 (+0.5, -0.4) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.5 (+0.7, -0.4) × 10-9 erg cm-2 s-1
Counts to flux (obs)2.44 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.47 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
170.36 (210)
Spectrum exposure32 s

PC mode. Mean photon arrival: T0+10067 s

NH (Galactic)3.35 × 1021 cm-2
NH (intrinsic)5.4 (+11.1, -5.4) × 1020 cm-2
z of absorber0
Photon index1.73 (+0.19, -0.17)
Flux (0.3-10 keV)
(Observed)
6.7 (+0.7, -0.7) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
9.1 (+0.8, -0.8) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.53 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.15 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
304.91 (319)
Spectrum exposure6.4 ks

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Late Time spectrum (T0 + 5150 to 33891 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+13614 s

NH (Galactic)3.35 × 1021 cm-2
NH (intrinsic)8.5 (+13.9, -8.5) × 1020 cm-2
z of absorber0
Photon index1.71 (+0.22, -0.21)
Flux (0.3-10 keV)
(Observed)
4.7 (+0.6, -0.5) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.4 (+0.7, -0.6) × 10-12 erg cm-2 s-1
Counts to flux (obs)4.67 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.33 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
240.98 (273)
Spectrum exposure6.1 ks

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