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Swift-XRT spectra of GRB 221009A

Last updated after receiving ObsID 01126853066, version 5

Data were analysed using HEASOFT version 6.29

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The spectral fits assume a redshift: 0.151 (GCN 32648)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 3373 to 101193 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+26299 s

NH (Galactic)5.36 × 1021 cm-2
NH (intrinsic)1.304 (+0.023, -0.023) × 1022 cm-2
z of absorber0.151
Photon index1.780 (+0.011, -0.011)
Flux (0.3-10 keV)
(Observed)
2.406 (+0.011, -0.011) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.14 (+0.03, -0.03) × 10-9 erg cm-2 s-1
Counts to flux (obs)5.83 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.00 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
1556.49 (966)
Spectrum exposure12.5 ks

PC mode. Mean photon arrival: T0+94453 s

NH (Galactic)5.36 × 1021 cm-2
NH (intrinsic)1.4 (+0.4, -0.4) × 1022 cm-2
z of absorber0.151
Photon index1.76 (+0.20, -0.19)
Flux (0.3-10 keV)
(Observed)
2.29 (+0.19, -0.18) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.0 (+0.6, -0.4) × 10-10 erg cm-2 s-1
Counts to flux (obs)6.19 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.07 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
366.78 (453)
Spectrum exposure3.1 ks

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Late Time spectrum (T0 + 67669 to 101193 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+94428 s

NH (Galactic)5.36 × 1021 cm-2
NH (intrinsic)1.4 (+0.4, -0.4) × 1022 cm-2
z of absorber0.151
Photon index1.76 (+0.20, -0.19)
Flux (0.3-10 keV)
(Observed)
2.29 (+0.19, -0.18) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.0 (+0.6, -0.4) × 10-10 erg cm-2 s-1
Counts to flux (obs)6.18 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.06 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
366.54 (453)
Spectrum exposure3.1 ks

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