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Swift-XRT spectra of GRB 221009A

Last updated after receiving ObsID 01126853084, version 21

Data were analysed using HEASOFT version 6.35.2

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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+26480 s

NH (Galactic)5.38 × 1021 cm-2
NH (intrinsic)1.262 (+0.023, -0.023) × 1022 cm-2
z of absorber0.151
Photon index1.714 (+0.011, -0.011)
Flux (0.3-10 keV)
(Observed)
2.541 (+0.012, -0.012) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.175 (+0.029, -0.028) × 10-9 erg cm-2 s-1
Counts to flux (obs)6.04 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.93 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
1329.07 (965)
Spectrum exposure12.5 ks

PC mode. Mean photon arrival: T0+94798 s

NH (Galactic)5.38 × 1021 cm-2
NH (intrinsic)1.2 (+0.4, -0.3) × 1022 cm-2
z of absorber0.151
Photon index1.73 (+0.17, -0.16)
Flux (0.3-10 keV)
(Observed)
2.65 (+0.20, -0.18) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.4 (+0.5, -0.4) × 10-10 erg cm-2 s-1
Counts to flux (obs)6.31 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.04 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
400.38 (513)
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+94779 s

NH (Galactic)5.38 × 1021 cm-2
NH (intrinsic)1.2 (+0.4, -0.3) × 1022 cm-2
z of absorber0.151
Photon index1.73 (+0.17, -0.16)
Flux (0.3-10 keV)
(Observed)
2.65 (+0.20, -0.18) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.4 (+0.5, -0.4) × 10-10 erg cm-2 s-1
Counts to flux (obs)6.30 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)1.04 × 10-10 erg cm-2 ct-1
W-stat (dof)
What's this?
401.48 (513)
Spectrum exposure3.1 ks

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