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Swift-XRT spectra of GRB 210731A

Last updated after receiving ObsID 01062336009, version 12

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 1.2525 (GCN 30583)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 207 to 69481 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+234 s

NH (Galactic)1.15 × 1021 cm-2
NH (intrinsic)2.0 (+2.2, -1.8) × 1021 cm-2
z of absorber1.2525
Photon index3.07 (+0.25, -0.21)
Flux (0.3-10 keV)
(Observed)
3.97 (+0.31, -0.29) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
8.5 (+1.8, -1.2) × 10-10 erg cm-2 s-1
Counts to flux (obs)2.21 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.69 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
278.31 (273)
Spectrum exposure62 s

PC mode. Mean photon arrival: T0+37125 s

NH (Galactic)1.15 × 1021 cm-2
NH (intrinsic)1.7 (+3.6, -1.7) × 1021 cm-2
z of absorber1.2525
Photon index1.95 (+0.21, -0.19)
Flux (0.3-10 keV)
(Observed)
1.76 (+0.25, -0.22) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.24 (+0.24, -0.22) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.43 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.36 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
182.14 (210)
Spectrum exposure10.0 ks

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Late Time spectrum (T0 + 11782 to 69481 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+37125 s

NH (Galactic)1.15 × 1021 cm-2
NH (intrinsic)1.7 (+3.6, -1.7) × 1021 cm-2
z of absorber1.2525
Photon index1.95 (+0.21, -0.19)
Flux (0.3-10 keV)
(Observed)
1.76 (+0.25, -0.22) × 10-12 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.25 (+0.24, -0.22) × 10-12 erg cm-2 s-1
Counts to flux (obs)3.43 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)4.37 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
182.14 (210)
Spectrum exposure10.0 ks

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