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Swift-XRT spectra of GRB 210822A

Last updated after receiving ObsID 01069788013, version 2

Data were analysed using HEASOFT version 6.35.2

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The spectral fits assume a redshift: 1.736 (GCN 30692)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 78 to 96563 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+478 s

NH (Galactic)1.45 × 1021 cm-2
NH (intrinsic)3.4 (+0.6, -0.6) × 1021 cm-2
z of absorber1.736
Photon index1.756 (+0.017, -0.017)
Flux (0.3-10 keV)
(Observed)
2.420 (+0.028, -0.027) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.982 (+0.027, -0.026) × 10-9 erg cm-2 s-1
Counts to flux (obs)3.94 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.86 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
964.01 (873)
Spectrum exposure1.2 ks

PC mode. Mean photon arrival: T0+31066 s

NH (Galactic)1.45 × 1021 cm-2
NH (intrinsic)4 (+4, -3) × 1021 cm-2
z of absorber1.736
Photon index1.67 (+0.10, -0.09)
Flux (0.3-10 keV)
(Observed)
1.32 (+0.09, -0.08) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.58 (+0.08, -0.08) × 10-11 erg cm-2 s-1
Counts to flux (obs)4.27 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.13 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
408.51 (453)
Spectrum exposure8.5 ks

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Late Time spectrum (T0 + 4553 to 96563 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+31066 s

NH (Galactic)1.45 × 1021 cm-2
NH (intrinsic)4 (+4, -3) × 1021 cm-2
z of absorber1.736
Photon index1.67 (+0.10, -0.09)
Flux (0.3-10 keV)
(Observed)
1.32 (+0.09, -0.08) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
1.58 (+0.08, -0.08) × 10-11 erg cm-2 s-1
Counts to flux (obs)4.27 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.13 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
408.51 (453)
Spectrum exposure8.5 ks

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