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Swift-XRT spectra of GRB 211227A

Last updated after receiving ObsID 01091101001, version 16

Data were analysed using HEASOFT version 6.29

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Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 79 to 73704 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+130 s

NH (Galactic)2.37 × 1020 cm-2
NH (intrinsic)2.0 (+0.5, -0.4) × 1021 cm-2
z of absorber0
Photon index1.11 (+0.07, -0.07)
Flux (0.3-10 keV)
(Observed)
1.88 (+0.09, -0.08) × 10-9 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.05 (+0.07, -0.07) × 10-9 erg cm-2 s-1
Counts to flux (obs)6.09 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.63 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
628.12 (692)
Spectrum exposure182 s

PC mode. Mean photon arrival: T0+933 s

NH (Galactic)2.37 × 1020 cm-2
NH (intrinsic)2.9 (+1.8, -1.5) × 1021 cm-2
z of absorber0
Photon index3.0 (+0.7, -0.6)
Flux (0.3-10 keV)
(Observed)
8.7 (+2.1, -1.6) × 10-13 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.5 (+0.7, -0.6) × 10-12 erg cm-2 s-1
Counts to flux (obs)2.46 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)7.05 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
63.93 (90)
Spectrum exposure9.3 ks

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Late Time spectrum (T0 + 4682 to 73704 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+9484 s

NH (Galactic)2.37 × 1020 cm-2
NH (intrinsic)4.4 (+25.1, -4.4) × 1021 cm-2
z of absorber0
Photon index2.1 (+4.6, -1.7)
Flux (0.3-10 keV)
(Observed)
4 (+9, -3) × 10-14 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
7.6 (+21.7, -5.0) × 10-14 erg cm-2 s-1
Counts to flux (obs)3.73 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)6.55 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
3.81 (5)
Spectrum exposure8.5 ks

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